linaro-kernel May 2016

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162 discussions

master build: 0 failures 4 warnings (v4.6-3623-g0b7962a)

by Build bot for Mark Brown

Tree/Branch: master Git describe: v4.6-3623-g0b7962a Commit: 0b7962a6c4 Merge branch 'for-4.7' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/libata Build Time: 87 min 29 sec Passed: 9 / 9 (100.00 %) Failed: 0 / 9 ( 0.00 %) Errors: 0 Warnings: 4 Section Mismatches: 0 ------------------------------------------------------------------------------- defconfigs with issues (other than build errors): 2 warnings 0 mismatches : arm64-allmodconfig 1 warnings 0 mismatches : arm-multi_v7_defconfig 3 warnings 0 mismatches : arm-allmodconfig 1 warnings 0 mismatches : arm64-defconfig ------------------------------------------------------------------------------- Warnings Summary: 4 3 ../drivers/gpu/drm/msm/msm_drv.c:468:18: warning: unused variable 'kms' [-Wunused-variable] 2 ../drivers/xen/balloon.c:154:13: warning: 'release_memory_resource' declared 'static' but never defined [-Wunused-function] 1 ../lib/lz4/lz4hc_compress.c:514:1: warning: the frame size of 1472 bytes is larger than 1024 bytes [-Wframe-larger-than=] 1 ../drivers/mtd/chips/cfi_cmdset_0020.c:651:1: warning: the frame size of 1032 bytes is larger than 1024 bytes [-Wframe-larger-than=] =============================================================================== Detailed per-defconfig build reports below: ------------------------------------------------------------------------------- arm64-allmodconfig : PASS, 0 errors, 2 warnings, 0 section mismatches Warnings: ../drivers/gpu/drm/msm/msm_drv.c:468:18: warning: unused variable 'kms' [-Wunused-variable] ../drivers/xen/balloon.c:154:13: warning: 'release_memory_resource' declared 'static' but never defined [-Wunused-function] ------------------------------------------------------------------------------- arm-multi_v7_defconfig : PASS, 0 errors, 1 warnings, 0 section mismatches Warnings: ../drivers/gpu/drm/msm/msm_drv.c:468:18: warning: unused variable 'kms' [-Wunused-variable] ------------------------------------------------------------------------------- arm-allmodconfig : PASS, 0 errors, 3 warnings, 0 section mismatches Warnings: ../lib/lz4/lz4hc_compress.c:514:1: warning: the frame size of 1472 bytes is larger than 1024 bytes [-Wframe-larger-than=] ../drivers/gpu/drm/msm/msm_drv.c:468:18: warning: unused variable 'kms' [-Wunused-variable] ../drivers/mtd/chips/cfi_cmdset_0020.c:651:1: warning: the frame size of 1032 bytes is larger than 1024 bytes [-Wframe-larger-than=] ------------------------------------------------------------------------------- arm64-defconfig : PASS, 0 errors, 1 warnings, 0 section mismatches Warnings: ../drivers/xen/balloon.c:154:13: warning: 'release_memory_resource' declared 'static' but never defined [-Wunused-function] ------------------------------------------------------------------------------- Passed with no errors, warnings or mismatches: x86_64-allnoconfig arm64-allnoconfig arm-allnoconfig arm-multi_v5_defconfig x86_64-defconfig

8 years, 9 months

master build: 0 failures 11 warnings (v4.6-1482-g7f427d3)

by Build bot for Mark Brown

Tree/Branch: master Git describe: v4.6-1482-g7f427d3 Commit: 7f427d3a60 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs Build Time: 86 min 45 sec Passed: 9 / 9 (100.00 %) Failed: 0 / 9 ( 0.00 %) Errors: 0 Warnings: 11 Section Mismatches: 0 ------------------------------------------------------------------------------- defconfigs with issues (other than build errors): 6 warnings 0 mismatches : arm64-allmodconfig 5 warnings 0 mismatches : arm-multi_v7_defconfig 10 warnings 0 mismatches : arm-allmodconfig 2 warnings 0 mismatches : arm-multi_v5_defconfig 3 warnings 0 mismatches : arm64-defconfig ------------------------------------------------------------------------------- Warnings Summary: 11 5 ../include/linux/export.h:63:25: warning: 'regulator_can_change_voltage' is deprecated [-Wdeprecated-declarations] 5 ../drivers/regulator/core.c:2536:1: warning: 'regulator_can_change_voltage' is deprecated [-Wdeprecated-declarations] 3 ../drivers/gpu/drm/msm/msm_drv.c:468:18: warning: unused variable 'kms' [-Wunused-variable] 3 ../drivers/gpu/drm/msm/dsi/phy/dsi_phy.c:181:3: warning: 'regulator_can_change_voltage' is deprecated [-Wdeprecated-declarations] 3 ../drivers/gpu/drm/msm/dsi/dsi_host.c:329:3: warning: 'regulator_can_change_voltage' is deprecated [-Wdeprecated-declarations] 2 ../drivers/xen/balloon.c:154:13: warning: 'release_memory_resource' declared 'static' but never defined [-Wunused-function] 1 ../lib/lz4/lz4hc_compress.c:514:1: warning: the frame size of 1472 bytes is larger than 1024 bytes [-Wframe-larger-than=] 1 ../drivers/mtd/chips/cfi_cmdset_0020.c:651:1: warning: the frame size of 1032 bytes is larger than 1024 bytes [-Wframe-larger-than=] 1 ../drivers/gpu/drm/omapdrm/dss/hdmi5.c:134:2: warning: 'regulator_can_change_voltage' is deprecated [-Wdeprecated-declarations] 1 ../drivers/gpu/drm/omapdrm/dss/hdmi4.c:117:2: warning: 'regulator_can_change_voltage' is deprecated [-Wdeprecated-declarations] 1 ../drivers/gpu/drm/omapdrm/dss/dsi.c:1183:2: warning: 'regulator_can_change_voltage' is deprecated [-Wdeprecated-declarations] =============================================================================== Detailed per-defconfig build reports below: ------------------------------------------------------------------------------- arm64-allmodconfig : PASS, 0 errors, 6 warnings, 0 section mismatches Warnings: ../drivers/gpu/drm/msm/msm_drv.c:468:18: warning: unused variable 'kms' [-Wunused-variable] ../drivers/gpu/drm/msm/dsi/dsi_host.c:329:3: warning: 'regulator_can_change_voltage' is deprecated [-Wdeprecated-declarations] ../drivers/gpu/drm/msm/dsi/phy/dsi_phy.c:181:3: warning: 'regulator_can_change_voltage' is deprecated [-Wdeprecated-declarations] ../drivers/regulator/core.c:2536:1: warning: 'regulator_can_change_voltage' is deprecated [-Wdeprecated-declarations] ../include/linux/export.h:63:25: warning: 'regulator_can_change_voltage' is deprecated [-Wdeprecated-declarations] ../drivers/xen/balloon.c:154:13: warning: 'release_memory_resource' declared 'static' but never defined [-Wunused-function] ------------------------------------------------------------------------------- arm-multi_v7_defconfig : PASS, 0 errors, 5 warnings, 0 section mismatches Warnings: ../drivers/gpu/drm/msm/msm_drv.c:468:18: warning: unused variable 'kms' [-Wunused-variable] ../drivers/gpu/drm/msm/dsi/dsi_host.c:329:3: warning: 'regulator_can_change_voltage' is deprecated [-Wdeprecated-declarations] ../drivers/gpu/drm/msm/dsi/phy/dsi_phy.c:181:3: warning: 'regulator_can_change_voltage' is deprecated [-Wdeprecated-declarations] ../drivers/regulator/core.c:2536:1: warning: 'regulator_can_change_voltage' is deprecated [-Wdeprecated-declarations] ../include/linux/export.h:63:25: warning: 'regulator_can_change_voltage' is deprecated [-Wdeprecated-declarations] ------------------------------------------------------------------------------- arm-allmodconfig : PASS, 0 errors, 10 warnings, 0 section mismatches Warnings: ../lib/lz4/lz4hc_compress.c:514:1: warning: the frame size of 1472 bytes is larger than 1024 bytes [-Wframe-larger-than=] ../drivers/gpu/drm/msm/msm_drv.c:468:18: warning: unused variable 'kms' [-Wunused-variable] ../drivers/gpu/drm/msm/dsi/dsi_host.c:329:3: warning: 'regulator_can_change_voltage' is deprecated [-Wdeprecated-declarations] ../drivers/gpu/drm/msm/dsi/phy/dsi_phy.c:181:3: warning: 'regulator_can_change_voltage' is deprecated [-Wdeprecated-declarations] ../drivers/gpu/drm/omapdrm/dss/dsi.c:1183:2: warning: 'regulator_can_change_voltage' is deprecated [-Wdeprecated-declarations] ../drivers/gpu/drm/omapdrm/dss/hdmi4.c:117:2: warning: 'regulator_can_change_voltage' is deprecated [-Wdeprecated-declarations] ../drivers/gpu/drm/omapdrm/dss/hdmi5.c:134:2: warning: 'regulator_can_change_voltage' is deprecated [-Wdeprecated-declarations] ../drivers/mtd/chips/cfi_cmdset_0020.c:651:1: warning: the frame size of 1032 bytes is larger than 1024 bytes [-Wframe-larger-than=] ../drivers/regulator/core.c:2536:1: warning: 'regulator_can_change_voltage' is deprecated [-Wdeprecated-declarations] ../include/linux/export.h:63:25: warning: 'regulator_can_change_voltage' is deprecated [-Wdeprecated-declarations] ------------------------------------------------------------------------------- arm-multi_v5_defconfig : PASS, 0 errors, 2 warnings, 0 section mismatches Warnings: ../drivers/regulator/core.c:2536:1: warning: 'regulator_can_change_voltage' is deprecated [-Wdeprecated-declarations] ../include/linux/export.h:63:25: warning: 'regulator_can_change_voltage' is deprecated [-Wdeprecated-declarations] ------------------------------------------------------------------------------- arm64-defconfig : PASS, 0 errors, 3 warnings, 0 section mismatches Warnings: ../drivers/regulator/core.c:2536:1: warning: 'regulator_can_change_voltage' is deprecated [-Wdeprecated-declarations] ../include/linux/export.h:63:25: warning: 'regulator_can_change_voltage' is deprecated [-Wdeprecated-declarations] ../drivers/xen/balloon.c:154:13: warning: 'release_memory_resource' declared 'static' but never defined [-Wunused-function] ------------------------------------------------------------------------------- Passed with no errors, warnings or mismatches: x86_64-allnoconfig arm64-allnoconfig arm-allnoconfig x86_64-defconfig

8 years, 9 months

master build: 0 failures 11 warnings (v4.6-1403-gede4090)

by Build bot for Mark Brown

Tree/Branch: master Git describe: v4.6-1403-gede4090 Commit: ede40902cf Merge branch 'irq-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Build Time: 87 min 47 sec Passed: 9 / 9 (100.00 %) Failed: 0 / 9 ( 0.00 %) Errors: 0 Warnings: 11 Section Mismatches: 0 ------------------------------------------------------------------------------- defconfigs with issues (other than build errors): 6 warnings 0 mismatches : arm64-allmodconfig 5 warnings 0 mismatches : arm-multi_v7_defconfig 10 warnings 0 mismatches : arm-allmodconfig 2 warnings 0 mismatches : arm-multi_v5_defconfig 3 warnings 0 mismatches : arm64-defconfig ------------------------------------------------------------------------------- Warnings Summary: 11 5 ../include/linux/export.h:63:25: warning: 'regulator_can_change_voltage' is deprecated [-Wdeprecated-declarations] 5 ../drivers/regulator/core.c:2536:1: warning: 'regulator_can_change_voltage' is deprecated [-Wdeprecated-declarations] 3 ../drivers/gpu/drm/msm/msm_drv.c:468:18: warning: unused variable 'kms' [-Wunused-variable] 3 ../drivers/gpu/drm/msm/dsi/phy/dsi_phy.c:181:3: warning: 'regulator_can_change_voltage' is deprecated [-Wdeprecated-declarations] 3 ../drivers/gpu/drm/msm/dsi/dsi_host.c:329:3: warning: 'regulator_can_change_voltage' is deprecated [-Wdeprecated-declarations] 2 ../drivers/xen/balloon.c:154:13: warning: 'release_memory_resource' declared 'static' but never defined [-Wunused-function] 1 ../lib/lz4/lz4hc_compress.c:514:1: warning: the frame size of 1472 bytes is larger than 1024 bytes [-Wframe-larger-than=] 1 ../drivers/mtd/chips/cfi_cmdset_0020.c:651:1: warning: the frame size of 1032 bytes is larger than 1024 bytes [-Wframe-larger-than=] 1 ../drivers/gpu/drm/omapdrm/dss/hdmi5.c:134:2: warning: 'regulator_can_change_voltage' is deprecated [-Wdeprecated-declarations] 1 ../drivers/gpu/drm/omapdrm/dss/hdmi4.c:117:2: warning: 'regulator_can_change_voltage' is deprecated [-Wdeprecated-declarations] 1 ../drivers/gpu/drm/omapdrm/dss/dsi.c:1183:2: warning: 'regulator_can_change_voltage' is deprecated [-Wdeprecated-declarations] =============================================================================== Detailed per-defconfig build reports below: ------------------------------------------------------------------------------- arm64-allmodconfig : PASS, 0 errors, 6 warnings, 0 section mismatches Warnings: ../drivers/gpu/drm/msm/msm_drv.c:468:18: warning: unused variable 'kms' [-Wunused-variable] ../drivers/gpu/drm/msm/dsi/dsi_host.c:329:3: warning: 'regulator_can_change_voltage' is deprecated [-Wdeprecated-declarations] ../drivers/gpu/drm/msm/dsi/phy/dsi_phy.c:181:3: warning: 'regulator_can_change_voltage' is deprecated [-Wdeprecated-declarations] ../drivers/regulator/core.c:2536:1: warning: 'regulator_can_change_voltage' is deprecated [-Wdeprecated-declarations] ../include/linux/export.h:63:25: warning: 'regulator_can_change_voltage' is deprecated [-Wdeprecated-declarations] ../drivers/xen/balloon.c:154:13: warning: 'release_memory_resource' declared 'static' but never defined [-Wunused-function] ------------------------------------------------------------------------------- arm-multi_v7_defconfig : PASS, 0 errors, 5 warnings, 0 section mismatches Warnings: ../drivers/gpu/drm/msm/msm_drv.c:468:18: warning: unused variable 'kms' [-Wunused-variable] ../drivers/gpu/drm/msm/dsi/dsi_host.c:329:3: warning: 'regulator_can_change_voltage' is deprecated [-Wdeprecated-declarations] ../drivers/gpu/drm/msm/dsi/phy/dsi_phy.c:181:3: warning: 'regulator_can_change_voltage' is deprecated [-Wdeprecated-declarations] ../drivers/regulator/core.c:2536:1: warning: 'regulator_can_change_voltage' is deprecated [-Wdeprecated-declarations] ../include/linux/export.h:63:25: warning: 'regulator_can_change_voltage' is deprecated [-Wdeprecated-declarations] ------------------------------------------------------------------------------- arm-allmodconfig : PASS, 0 errors, 10 warnings, 0 section mismatches Warnings: ../lib/lz4/lz4hc_compress.c:514:1: warning: the frame size of 1472 bytes is larger than 1024 bytes [-Wframe-larger-than=] ../drivers/gpu/drm/msm/msm_drv.c:468:18: warning: unused variable 'kms' [-Wunused-variable] ../drivers/gpu/drm/msm/dsi/dsi_host.c:329:3: warning: 'regulator_can_change_voltage' is deprecated [-Wdeprecated-declarations] ../drivers/gpu/drm/msm/dsi/phy/dsi_phy.c:181:3: warning: 'regulator_can_change_voltage' is deprecated [-Wdeprecated-declarations] ../drivers/gpu/drm/omapdrm/dss/dsi.c:1183:2: warning: 'regulator_can_change_voltage' is deprecated [-Wdeprecated-declarations] ../drivers/gpu/drm/omapdrm/dss/hdmi4.c:117:2: warning: 'regulator_can_change_voltage' is deprecated [-Wdeprecated-declarations] ../drivers/gpu/drm/omapdrm/dss/hdmi5.c:134:2: warning: 'regulator_can_change_voltage' is deprecated [-Wdeprecated-declarations] ../drivers/mtd/chips/cfi_cmdset_0020.c:651:1: warning: the frame size of 1032 bytes is larger than 1024 bytes [-Wframe-larger-than=] ../drivers/regulator/core.c:2536:1: warning: 'regulator_can_change_voltage' is deprecated [-Wdeprecated-declarations] ../include/linux/export.h:63:25: warning: 'regulator_can_change_voltage' is deprecated [-Wdeprecated-declarations] ------------------------------------------------------------------------------- arm-multi_v5_defconfig : PASS, 0 errors, 2 warnings, 0 section mismatches Warnings: ../drivers/regulator/core.c:2536:1: warning: 'regulator_can_change_voltage' is deprecated [-Wdeprecated-declarations] ../include/linux/export.h:63:25: warning: 'regulator_can_change_voltage' is deprecated [-Wdeprecated-declarations] ------------------------------------------------------------------------------- arm64-defconfig : PASS, 0 errors, 3 warnings, 0 section mismatches Warnings: ../drivers/regulator/core.c:2536:1: warning: 'regulator_can_change_voltage' is deprecated [-Wdeprecated-declarations] ../include/linux/export.h:63:25: warning: 'regulator_can_change_voltage' is deprecated [-Wdeprecated-declarations] ../drivers/xen/balloon.c:154:13: warning: 'release_memory_resource' declared 'static' but never defined [-Wunused-function] ------------------------------------------------------------------------------- Passed with no errors, warnings or mismatches: x86_64-allnoconfig arm64-allnoconfig arm-allnoconfig x86_64-defconfig

8 years, 10 months

[PATCH v2 net-next] bpf: arm64: remove callee-save registers use for tmp registers

by Yang Shi

In the current implementation of ARM64 eBPF JIT, R23 and R24 are used for tmp registers, which are callee-saved registers. This leads to variable size of JIT prologue and epilogue. The latest blinding constant change prefers to constant size of prologue and epilogue. AAPCS reserves R9 ~ R15 for temp registers which not need to be saved/restored during function call. So, replace R23 and R24 to R10 and R11, and remove tmp_used flag to save 2 instructions for some jited BPF program. CC: Daniel Borkmann <daniel(a)iogearbox.net> Acked-by: Zi Shen Lim <zlim.lnx(a)gmail.com> Signed-off-by: Yang Shi <yang.shi(a)linaro.org> --- Changelog v1 --> v2: * Updated stack diagram * Added the comment from Zi for the commit log * Added Zi's Acked-by Apply on top of Daniel's blinding constant patchset arch/arm64/net/bpf_jit_comp.c | 34 +++++----------------------------- 1 file changed, 5 insertions(+), 29 deletions(-) diff --git a/arch/arm64/net/bpf_jit_comp.c b/arch/arm64/net/bpf_jit_comp.c index d0d5190..49ba37e 100644 --- a/arch/arm64/net/bpf_jit_comp.c +++ b/arch/arm64/net/bpf_jit_comp.c @@ -51,9 +51,9 @@ static const int bpf2a64[] = { [BPF_REG_9] = A64_R(22), /* read-only frame pointer to access stack */ [BPF_REG_FP] = A64_R(25), - /* temporary register for internal BPF JIT */ - [TMP_REG_1] = A64_R(23), - [TMP_REG_2] = A64_R(24), + /* temporary registers for internal BPF JIT */ + [TMP_REG_1] = A64_R(10), + [TMP_REG_2] = A64_R(11), /* temporary register for blinding constants */ [BPF_REG_AX] = A64_R(9), }; @@ -61,7 +61,6 @@ static const int bpf2a64[] = { struct jit_ctx { const struct bpf_prog *prog; int idx; - int tmp_used; int epilogue_offset; int *offset; u32 *image; @@ -154,8 +153,6 @@ static void build_prologue(struct jit_ctx *ctx) const u8 r8 = bpf2a64[BPF_REG_8]; const u8 r9 = bpf2a64[BPF_REG_9]; const u8 fp = bpf2a64[BPF_REG_FP]; - const u8 tmp1 = bpf2a64[TMP_REG_1]; - const u8 tmp2 = bpf2a64[TMP_REG_2]; /* * BPF prog stack layout @@ -167,7 +164,7 @@ static void build_prologue(struct jit_ctx *ctx) * | ... | callee saved registers * +-----+ * | | x25/x26 - * BPF fp register => -80:+-----+ <= (BPF_FP) + * BPF fp register => -64:+-----+ <= (BPF_FP) * | | * | ... | BPF prog stack * | | @@ -189,8 +186,6 @@ static void build_prologue(struct jit_ctx *ctx) /* Save callee-saved register */ emit(A64_PUSH(r6, r7, A64_SP), ctx); emit(A64_PUSH(r8, r9, A64_SP), ctx); - if (ctx->tmp_used) - emit(A64_PUSH(tmp1, tmp2, A64_SP), ctx); /* Save fp (x25) and x26. SP requires 16 bytes alignment */ emit(A64_PUSH(fp, A64_R(26), A64_SP), ctx); @@ -210,8 +205,6 @@ static void build_epilogue(struct jit_ctx *ctx) const u8 r8 = bpf2a64[BPF_REG_8]; const u8 r9 = bpf2a64[BPF_REG_9]; const u8 fp = bpf2a64[BPF_REG_FP]; - const u8 tmp1 = bpf2a64[TMP_REG_1]; - const u8 tmp2 = bpf2a64[TMP_REG_2]; /* We're done with BPF stack */ emit(A64_ADD_I(1, A64_SP, A64_SP, STACK_SIZE), ctx); @@ -220,8 +213,6 @@ static void build_epilogue(struct jit_ctx *ctx) emit(A64_POP(fp, A64_R(26), A64_SP), ctx); /* Restore callee-saved register */ - if (ctx->tmp_used) - emit(A64_POP(tmp1, tmp2, A64_SP), ctx); emit(A64_POP(r8, r9, A64_SP), ctx); emit(A64_POP(r6, r7, A64_SP), ctx); @@ -317,7 +308,6 @@ static int build_insn(const struct bpf_insn *insn, struct jit_ctx *ctx) emit(A64_UDIV(is64, dst, dst, src), ctx); break; case BPF_MOD: - ctx->tmp_used = 1; emit(A64_UDIV(is64, tmp, dst, src), ctx); emit(A64_MUL(is64, tmp, tmp, src), ctx); emit(A64_SUB(is64, dst, dst, tmp), ctx); @@ -390,49 +380,41 @@ emit_bswap_uxt: /* dst = dst OP imm */ case BPF_ALU | BPF_ADD | BPF_K: case BPF_ALU64 | BPF_ADD | BPF_K: - ctx->tmp_used = 1; emit_a64_mov_i(is64, tmp, imm, ctx); emit(A64_ADD(is64, dst, dst, tmp), ctx); break; case BPF_ALU | BPF_SUB | BPF_K: case BPF_ALU64 | BPF_SUB | BPF_K: - ctx->tmp_used = 1; emit_a64_mov_i(is64, tmp, imm, ctx); emit(A64_SUB(is64, dst, dst, tmp), ctx); break; case BPF_ALU | BPF_AND | BPF_K: case BPF_ALU64 | BPF_AND | BPF_K: - ctx->tmp_used = 1; emit_a64_mov_i(is64, tmp, imm, ctx); emit(A64_AND(is64, dst, dst, tmp), ctx); break; case BPF_ALU | BPF_OR | BPF_K: case BPF_ALU64 | BPF_OR | BPF_K: - ctx->tmp_used = 1; emit_a64_mov_i(is64, tmp, imm, ctx); emit(A64_ORR(is64, dst, dst, tmp), ctx); break; case BPF_ALU | BPF_XOR | BPF_K: case BPF_ALU64 | BPF_XOR | BPF_K: - ctx->tmp_used = 1; emit_a64_mov_i(is64, tmp, imm, ctx); emit(A64_EOR(is64, dst, dst, tmp), ctx); break; case BPF_ALU | BPF_MUL | BPF_K: case BPF_ALU64 | BPF_MUL | BPF_K: - ctx->tmp_used = 1; emit_a64_mov_i(is64, tmp, imm, ctx); emit(A64_MUL(is64, dst, dst, tmp), ctx); break; case BPF_ALU | BPF_DIV | BPF_K: case BPF_ALU64 | BPF_DIV | BPF_K: - ctx->tmp_used = 1; emit_a64_mov_i(is64, tmp, imm, ctx); emit(A64_UDIV(is64, dst, dst, tmp), ctx); break; case BPF_ALU | BPF_MOD | BPF_K: case BPF_ALU64 | BPF_MOD | BPF_K: - ctx->tmp_used = 1; emit_a64_mov_i(is64, tmp2, imm, ctx); emit(A64_UDIV(is64, tmp, dst, tmp2), ctx); emit(A64_MUL(is64, tmp, tmp, tmp2), ctx); @@ -503,12 +485,10 @@ emit_cond_jmp: case BPF_JMP | BPF_JNE | BPF_K: case BPF_JMP | BPF_JSGT | BPF_K: case BPF_JMP | BPF_JSGE | BPF_K: - ctx->tmp_used = 1; emit_a64_mov_i(1, tmp, imm, ctx); emit(A64_CMP(1, dst, tmp), ctx); goto emit_cond_jmp; case BPF_JMP | BPF_JSET | BPF_K: - ctx->tmp_used = 1; emit_a64_mov_i(1, tmp, imm, ctx); emit(A64_TST(1, dst, tmp), ctx); goto emit_cond_jmp; @@ -518,7 +498,6 @@ emit_cond_jmp: const u8 r0 = bpf2a64[BPF_REG_0]; const u64 func = (u64)__bpf_call_base + imm; - ctx->tmp_used = 1; emit_a64_mov_i64(tmp, func, ctx); emit(A64_PUSH(A64_FP, A64_LR, A64_SP), ctx); emit(A64_MOV(1, A64_FP, A64_SP), ctx); @@ -564,7 +543,6 @@ emit_cond_jmp: case BPF_LDX | BPF_MEM | BPF_H: case BPF_LDX | BPF_MEM | BPF_B: case BPF_LDX | BPF_MEM | BPF_DW: - ctx->tmp_used = 1; emit_a64_mov_i(1, tmp, off, ctx); switch (BPF_SIZE(code)) { case BPF_W: @@ -588,7 +566,6 @@ emit_cond_jmp: case BPF_ST | BPF_MEM | BPF_B: case BPF_ST | BPF_MEM | BPF_DW: /* Load imm to a register then store it */ - ctx->tmp_used = 1; emit_a64_mov_i(1, tmp2, off, ctx); emit_a64_mov_i(1, tmp, imm, ctx); switch (BPF_SIZE(code)) { @@ -612,7 +589,6 @@ emit_cond_jmp: case BPF_STX | BPF_MEM | BPF_H: case BPF_STX | BPF_MEM | BPF_B: case BPF_STX | BPF_MEM | BPF_DW: - ctx->tmp_used = 1; emit_a64_mov_i(1, tmp, off, ctx); switch (BPF_SIZE(code)) { case BPF_W: @@ -798,7 +774,7 @@ struct bpf_prog *bpf_int_jit_compile(struct bpf_prog *prog) /* 1. Initial fake pass to compute ctx->idx. */ - /* Fake pass to fill in ctx->offset and ctx->tmp_used. */ + /* Fake pass to fill in ctx->offset. */ if (build_body(&ctx)) { prog = orig_prog; goto out_off; -- 2.0.2

8 years, 10 months

master build: 0 failures 11 warnings (v4.6-1278-g1649098)

by Build bot for Mark Brown

Tree/Branch: master Git describe: v4.6-1278-g1649098 Commit: 16490980e3 Merge tag 'device-properties-4.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm Build Time: 123 min 13 sec Passed: 9 / 9 (100.00 %) Failed: 0 / 9 ( 0.00 %) Errors: 0 Warnings: 11 Section Mismatches: 0 ------------------------------------------------------------------------------- defconfigs with issues (other than build errors): 6 warnings 0 mismatches : arm64-allmodconfig 5 warnings 0 mismatches : arm-multi_v7_defconfig 10 warnings 0 mismatches : arm-allmodconfig 2 warnings 0 mismatches : arm-multi_v5_defconfig 3 warnings 0 mismatches : arm64-defconfig ------------------------------------------------------------------------------- Warnings Summary: 11 5 ../include/linux/export.h:63:25: warning: 'regulator_can_change_voltage' is deprecated [-Wdeprecated-declarations] 5 ../drivers/regulator/core.c:2536:1: warning: 'regulator_can_change_voltage' is deprecated [-Wdeprecated-declarations] 3 ../drivers/gpu/drm/msm/msm_drv.c:468:18: warning: unused variable 'kms' [-Wunused-variable] 3 ../drivers/gpu/drm/msm/dsi/phy/dsi_phy.c:181:3: warning: 'regulator_can_change_voltage' is deprecated [-Wdeprecated-declarations] 3 ../drivers/gpu/drm/msm/dsi/dsi_host.c:329:3: warning: 'regulator_can_change_voltage' is deprecated [-Wdeprecated-declarations] 2 ../drivers/xen/balloon.c:154:13: warning: 'release_memory_resource' declared 'static' but never defined [-Wunused-function] 1 ../lib/lz4/lz4hc_compress.c:514:1: warning: the frame size of 1472 bytes is larger than 1024 bytes [-Wframe-larger-than=] 1 ../drivers/mtd/chips/cfi_cmdset_0020.c:651:1: warning: the frame size of 1032 bytes is larger than 1024 bytes [-Wframe-larger-than=] 1 ../drivers/gpu/drm/omapdrm/dss/hdmi5.c:134:2: warning: 'regulator_can_change_voltage' is deprecated [-Wdeprecated-declarations] 1 ../drivers/gpu/drm/omapdrm/dss/hdmi4.c:117:2: warning: 'regulator_can_change_voltage' is deprecated [-Wdeprecated-declarations] 1 ../drivers/gpu/drm/omapdrm/dss/dsi.c:1183:2: warning: 'regulator_can_change_voltage' is deprecated [-Wdeprecated-declarations] =============================================================================== Detailed per-defconfig build reports below: ------------------------------------------------------------------------------- arm64-allmodconfig : PASS, 0 errors, 6 warnings, 0 section mismatches Warnings: ../drivers/gpu/drm/msm/msm_drv.c:468:18: warning: unused variable 'kms' [-Wunused-variable] ../drivers/gpu/drm/msm/dsi/dsi_host.c:329:3: warning: 'regulator_can_change_voltage' is deprecated [-Wdeprecated-declarations] ../drivers/gpu/drm/msm/dsi/phy/dsi_phy.c:181:3: warning: 'regulator_can_change_voltage' is deprecated [-Wdeprecated-declarations] ../drivers/regulator/core.c:2536:1: warning: 'regulator_can_change_voltage' is deprecated [-Wdeprecated-declarations] ../include/linux/export.h:63:25: warning: 'regulator_can_change_voltage' is deprecated [-Wdeprecated-declarations] ../drivers/xen/balloon.c:154:13: warning: 'release_memory_resource' declared 'static' but never defined [-Wunused-function] ------------------------------------------------------------------------------- arm-multi_v7_defconfig : PASS, 0 errors, 5 warnings, 0 section mismatches Warnings: ../drivers/gpu/drm/msm/msm_drv.c:468:18: warning: unused variable 'kms' [-Wunused-variable] ../drivers/gpu/drm/msm/dsi/dsi_host.c:329:3: warning: 'regulator_can_change_voltage' is deprecated [-Wdeprecated-declarations] ../drivers/gpu/drm/msm/dsi/phy/dsi_phy.c:181:3: warning: 'regulator_can_change_voltage' is deprecated [-Wdeprecated-declarations] ../drivers/regulator/core.c:2536:1: warning: 'regulator_can_change_voltage' is deprecated [-Wdeprecated-declarations] ../include/linux/export.h:63:25: warning: 'regulator_can_change_voltage' is deprecated [-Wdeprecated-declarations] ------------------------------------------------------------------------------- arm-allmodconfig : PASS, 0 errors, 10 warnings, 0 section mismatches Warnings: ../lib/lz4/lz4hc_compress.c:514:1: warning: the frame size of 1472 bytes is larger than 1024 bytes [-Wframe-larger-than=] ../drivers/gpu/drm/omapdrm/dss/dsi.c:1183:2: warning: 'regulator_can_change_voltage' is deprecated [-Wdeprecated-declarations] ../drivers/gpu/drm/msm/msm_drv.c:468:18: warning: unused variable 'kms' [-Wunused-variable] ../drivers/gpu/drm/omapdrm/dss/hdmi4.c:117:2: warning: 'regulator_can_change_voltage' is deprecated [-Wdeprecated-declarations] ../drivers/gpu/drm/omapdrm/dss/hdmi5.c:134:2: warning: 'regulator_can_change_voltage' is deprecated [-Wdeprecated-declarations] ../drivers/gpu/drm/msm/dsi/dsi_host.c:329:3: warning: 'regulator_can_change_voltage' is deprecated [-Wdeprecated-declarations] ../drivers/gpu/drm/msm/dsi/phy/dsi_phy.c:181:3: warning: 'regulator_can_change_voltage' is deprecated [-Wdeprecated-declarations] ../drivers/mtd/chips/cfi_cmdset_0020.c:651:1: warning: the frame size of 1032 bytes is larger than 1024 bytes [-Wframe-larger-than=] ../drivers/regulator/core.c:2536:1: warning: 'regulator_can_change_voltage' is deprecated [-Wdeprecated-declarations] ../include/linux/export.h:63:25: warning: 'regulator_can_change_voltage' is deprecated [-Wdeprecated-declarations] ------------------------------------------------------------------------------- arm-multi_v5_defconfig : PASS, 0 errors, 2 warnings, 0 section mismatches Warnings: ../drivers/regulator/core.c:2536:1: warning: 'regulator_can_change_voltage' is deprecated [-Wdeprecated-declarations] ../include/linux/export.h:63:25: warning: 'regulator_can_change_voltage' is deprecated [-Wdeprecated-declarations] ------------------------------------------------------------------------------- arm64-defconfig : PASS, 0 errors, 3 warnings, 0 section mismatches Warnings: ../drivers/regulator/core.c:2536:1: warning: 'regulator_can_change_voltage' is deprecated [-Wdeprecated-declarations] ../include/linux/export.h:63:25: warning: 'regulator_can_change_voltage' is deprecated [-Wdeprecated-declarations] ../drivers/xen/balloon.c:154:13: warning: 'release_memory_resource' declared 'static' but never defined [-Wunused-function] ------------------------------------------------------------------------------- Passed with no errors, warnings or mismatches: x86_64-allnoconfig arm64-allnoconfig arm-allnoconfig x86_64-defconfig

8 years, 10 months

next-20160517 build: 0 failures 19 warnings (next-20160517)

by Build bot for Mark Brown

Tree/Branch: next-20160517 Git describe: next-20160517 Commit: 16c704a374 Add linux-next specific files for 20160517 Build Time: 152 min 58 sec Passed: 9 / 9 (100.00 %) Failed: 0 / 9 ( 0.00 %) Errors: 0 Warnings: 19 Section Mismatches: 0 ------------------------------------------------------------------------------- defconfigs with issues (other than build errors): 1 warnings 0 mismatches : arm64-allnoconfig 15 warnings 0 mismatches : arm64-allmodconfig 3 warnings 0 mismatches : arm-multi_v5_defconfig 3 warnings 0 mismatches : arm-multi_v7_defconfig 1 warnings 0 mismatches : x86_64-defconfig 8 warnings 0 mismatches : arm-allmodconfig 1 warnings 0 mismatches : arm-allnoconfig 1 warnings 0 mismatches : x86_64-allnoconfig 4 warnings 0 mismatches : arm64-defconfig ------------------------------------------------------------------------------- Warnings Summary: 19 6 ../fs/ext4/inode.c:3502:9: warning: unused variable 'offset' [-Wunused-variable] 5 ../include/linux/export.h:63:25: warning: 'regulator_can_change_voltage' is deprecated [-Wdeprecated-declarations] 5 ../drivers/regulator/core.c:2536:1: warning: 'regulator_can_change_voltage' is deprecated [-Wdeprecated-declarations] 3 ../mm/page_alloc.c:3658:5: warning: 'compact_result' may be used uninitialized in this function [-Wmaybe-uninitialized] 2 ../sound/soc/codecs/hdac_hdmi.c:1721:16: warning: unused variable 'timeout' [-Wunused-variable] 2 ../drivers/xen/balloon.c:154:13: warning: 'release_memory_resource' declared 'static' but never defined [-Wunused-function] 2 ../drivers/pinctrl/stm32/pinctrl-stm32.c:797:17: warning: too many arguments for format [-Wformat-extra-args] 1 ../include/soc/nps/common.h:162:9: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast] 1 ../include/soc/nps/common.h:148:9: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast] 1 ../fs/reiserfs/ibalance.c:1156:2: warning: 'new_insert_key' may be used uninitialized in this function [-Wmaybe-uninitialized] 1 ../fs/gfs2/dir.c:802:9: warning: 'leaf_no' may be used uninitialized in this function [-Wmaybe-uninitialized] 1 ../fs/gfs2/dir.c:1021:8: warning: 'leaf_no' may be used uninitialized in this function [-Wmaybe-uninitialized] 1 ../drivers/staging/iio/adc/ad7606_spi.c:24:18: warning: 'data' may be used uninitialized in this function [-Wmaybe-uninitialized] 1 ../drivers/soc/mediatek/mtk-pmic-wrap.c:1086:16: warning: large integer implicitly truncated to unsigned type [-Woverflow] 1 ../drivers/soc/mediatek/mtk-pmic-wrap.c:1074:16: warning: large integer implicitly truncated to unsigned type [-Woverflow] 1 ../drivers/soc/mediatek/mtk-pmic-wrap.c:1062:16: warning: large integer implicitly truncated to unsigned type [-Woverflow] 1 ../drivers/gpu/drm/omapdrm/dss/hdmi5.c:134:2: warning: 'regulator_can_change_voltage' is deprecated [-Wdeprecated-declarations] 1 ../drivers/gpu/drm/omapdrm/dss/hdmi4.c:117:2: warning: 'regulator_can_change_voltage' is deprecated [-Wdeprecated-declarations] 1 ../drivers/gpu/drm/omapdrm/dss/dsi.c:1183:2: warning: 'regulator_can_change_voltage' is deprecated [-Wdeprecated-declarations] =============================================================================== Detailed per-defconfig build reports below: ------------------------------------------------------------------------------- arm64-allnoconfig : PASS, 0 errors, 1 warnings, 0 section mismatches Warnings: ../mm/page_alloc.c:3658:5: warning: 'compact_result' may be used uninitialized in this function [-Wmaybe-uninitialized] ------------------------------------------------------------------------------- arm64-allmodconfig : PASS, 0 errors, 15 warnings, 0 section mismatches Warnings: ../fs/ext4/inode.c:3502:9: warning: unused variable 'offset' [-Wunused-variable] ../sound/soc/codecs/hdac_hdmi.c:1721:16: warning: unused variable 'timeout' [-Wunused-variable] ../fs/gfs2/dir.c:802:9: warning: 'leaf_no' may be used uninitialized in this function [-Wmaybe-uninitialized] ../fs/gfs2/dir.c:1021:8: warning: 'leaf_no' may be used uninitialized in this function [-Wmaybe-uninitialized] ../fs/reiserfs/ibalance.c:1156:2: warning: 'new_insert_key' may be used uninitialized in this function [-Wmaybe-uninitialized] ../include/soc/nps/common.h:148:9: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast] ../include/soc/nps/common.h:162:9: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast] ../drivers/pinctrl/stm32/pinctrl-stm32.c:797:17: warning: too many arguments for format [-Wformat-extra-args] ../drivers/regulator/core.c:2536:1: warning: 'regulator_can_change_voltage' is deprecated [-Wdeprecated-declarations] ../include/linux/export.h:63:25: warning: 'regulator_can_change_voltage' is deprecated [-Wdeprecated-declarations] ../drivers/soc/mediatek/mtk-pmic-wrap.c:1062:16: warning: large integer implicitly truncated to unsigned type [-Woverflow] ../drivers/soc/mediatek/mtk-pmic-wrap.c:1074:16: warning: large integer implicitly truncated to unsigned type [-Woverflow] ../drivers/soc/mediatek/mtk-pmic-wrap.c:1086:16: warning: large integer implicitly truncated to unsigned type [-Woverflow] ../drivers/staging/iio/adc/ad7606_spi.c:24:18: warning: 'data' may be used uninitialized in this function [-Wmaybe-uninitialized] ../drivers/xen/balloon.c:154:13: warning: 'release_memory_resource' declared 'static' but never defined [-Wunused-function] ------------------------------------------------------------------------------- arm-multi_v5_defconfig : PASS, 0 errors, 3 warnings, 0 section mismatches Warnings: ../fs/ext4/inode.c:3502:9: warning: unused variable 'offset' [-Wunused-variable] ../drivers/regulator/core.c:2536:1: warning: 'regulator_can_change_voltage' is deprecated [-Wdeprecated-declarations] ../include/linux/export.h:63:25: warning: 'regulator_can_change_voltage' is deprecated [-Wdeprecated-declarations] ------------------------------------------------------------------------------- arm-multi_v7_defconfig : PASS, 0 errors, 3 warnings, 0 section mismatches Warnings: ../fs/ext4/inode.c:3502:9: warning: unused variable 'offset' [-Wunused-variable] ../drivers/regulator/core.c:2536:1: warning: 'regulator_can_change_voltage' is deprecated [-Wdeprecated-declarations] ../include/linux/export.h:63:25: warning: 'regulator_can_change_voltage' is deprecated [-Wdeprecated-declarations] ------------------------------------------------------------------------------- x86_64-defconfig : PASS, 0 errors, 1 warnings, 0 section mismatches Warnings: ../fs/ext4/inode.c:3502:9: warning: unused variable 'offset' [-Wunused-variable] ------------------------------------------------------------------------------- arm-allmodconfig : PASS, 0 errors, 8 warnings, 0 section mismatches Warnings: ../fs/ext4/inode.c:3502:9: warning: unused variable 'offset' [-Wunused-variable] ../sound/soc/codecs/hdac_hdmi.c:1721:16: warning: unused variable 'timeout' [-Wunused-variable] ../drivers/gpu/drm/omapdrm/dss/dsi.c:1183:2: warning: 'regulator_can_change_voltage' is deprecated [-Wdeprecated-declarations] ../drivers/gpu/drm/omapdrm/dss/hdmi4.c:117:2: warning: 'regulator_can_change_voltage' is deprecated [-Wdeprecated-declarations] ../drivers/gpu/drm/omapdrm/dss/hdmi5.c:134:2: warning: 'regulator_can_change_voltage' is deprecated [-Wdeprecated-declarations] ../drivers/pinctrl/stm32/pinctrl-stm32.c:797:17: warning: too many arguments for format [-Wformat-extra-args] ../drivers/regulator/core.c:2536:1: warning: 'regulator_can_change_voltage' is deprecated [-Wdeprecated-declarations] ../include/linux/export.h:63:25: warning: 'regulator_can_change_voltage' is deprecated [-Wdeprecated-declarations] ------------------------------------------------------------------------------- arm-allnoconfig : PASS, 0 errors, 1 warnings, 0 section mismatches Warnings: ../mm/page_alloc.c:3658:5: warning: 'compact_result' may be used uninitialized in this function [-Wmaybe-uninitialized] ------------------------------------------------------------------------------- x86_64-allnoconfig : PASS, 0 errors, 1 warnings, 0 section mismatches Warnings: ../mm/page_alloc.c:3658:5: warning: 'compact_result' may be used uninitialized in this function [-Wmaybe-uninitialized] ------------------------------------------------------------------------------- arm64-defconfig : PASS, 0 errors, 4 warnings, 0 section mismatches Warnings: ../fs/ext4/inode.c:3502:9: warning: unused variable 'offset' [-Wunused-variable] ../drivers/regulator/core.c:2536:1: warning: 'regulator_can_change_voltage' is deprecated [-Wdeprecated-declarations] ../include/linux/export.h:63:25: warning: 'regulator_can_change_voltage' is deprecated [-Wdeprecated-declarations] ../drivers/xen/balloon.c:154:13: warning: 'release_memory_resource' declared 'static' but never defined [-Wunused-function] ------------------------------------------------------------------------------- Passed with no errors, warnings or mismatches: close failed in file object destructor: sys.excepthook is missing lost sys.stderr

8 years, 10 months

master build: 0 failures 4 warnings (v4.6-782-gb6ae405)

by Build bot for Mark Brown

Tree/Branch: master Git describe: v4.6-782-gb6ae405 Commit: b6ae4055f4 Merge tag 'arm64-perf' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux Build Time: 87 min 56 sec Passed: 9 / 9 (100.00 %) Failed: 0 / 9 ( 0.00 %) Errors: 0 Warnings: 4 Section Mismatches: 0 ------------------------------------------------------------------------------- defconfigs with issues (other than build errors): 2 warnings 0 mismatches : arm64-allmodconfig 1 warnings 0 mismatches : arm-multi_v7_defconfig 3 warnings 0 mismatches : arm-allmodconfig 1 warnings 0 mismatches : arm64-defconfig ------------------------------------------------------------------------------- Warnings Summary: 4 3 ../drivers/gpu/drm/msm/msm_drv.c:468:18: warning: unused variable 'kms' [-Wunused-variable] 2 ../drivers/xen/balloon.c:154:13: warning: 'release_memory_resource' declared 'static' but never defined [-Wunused-function] 1 ../lib/lz4/lz4hc_compress.c:514:1: warning: the frame size of 1472 bytes is larger than 1024 bytes [-Wframe-larger-than=] 1 ../drivers/mtd/chips/cfi_cmdset_0020.c:651:1: warning: the frame size of 1032 bytes is larger than 1024 bytes [-Wframe-larger-than=] =============================================================================== Detailed per-defconfig build reports below: ------------------------------------------------------------------------------- arm64-allmodconfig : PASS, 0 errors, 2 warnings, 0 section mismatches Warnings: ../drivers/gpu/drm/msm/msm_drv.c:468:18: warning: unused variable 'kms' [-Wunused-variable] ../drivers/xen/balloon.c:154:13: warning: 'release_memory_resource' declared 'static' but never defined [-Wunused-function] ------------------------------------------------------------------------------- arm-multi_v7_defconfig : PASS, 0 errors, 1 warnings, 0 section mismatches Warnings: ../drivers/gpu/drm/msm/msm_drv.c:468:18: warning: unused variable 'kms' [-Wunused-variable] ------------------------------------------------------------------------------- arm-allmodconfig : PASS, 0 errors, 3 warnings, 0 section mismatches Warnings: ../lib/lz4/lz4hc_compress.c:514:1: warning: the frame size of 1472 bytes is larger than 1024 bytes [-Wframe-larger-than=] ../drivers/gpu/drm/msm/msm_drv.c:468:18: warning: unused variable 'kms' [-Wunused-variable] ../drivers/mtd/chips/cfi_cmdset_0020.c:651:1: warning: the frame size of 1032 bytes is larger than 1024 bytes [-Wframe-larger-than=] ------------------------------------------------------------------------------- arm64-defconfig : PASS, 0 errors, 1 warnings, 0 section mismatches Warnings: ../drivers/xen/balloon.c:154:13: warning: 'release_memory_resource' declared 'static' but never defined [-Wunused-function] ------------------------------------------------------------------------------- Passed with no errors, warnings or mismatches: x86_64-allnoconfig arm64-allnoconfig arm-allnoconfig arm-multi_v5_defconfig x86_64-defconfig

8 years, 10 months

master build: 0 failures 4 warnings (v4.6-119-g49817c3)

by Build bot for Mark Brown

Tree/Branch: master Git describe: v4.6-119-g49817c3 Commit: 49817c3343 Merge branch 'efi-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Build Time: 120 min 47 sec Passed: 9 / 9 (100.00 %) Failed: 0 / 9 ( 0.00 %) Errors: 0 Warnings: 4 Section Mismatches: 0 ------------------------------------------------------------------------------- defconfigs with issues (other than build errors): 2 warnings 0 mismatches : arm64-allmodconfig 1 warnings 0 mismatches : arm-multi_v7_defconfig 3 warnings 0 mismatches : arm-allmodconfig 1 warnings 0 mismatches : arm64-defconfig ------------------------------------------------------------------------------- Warnings Summary: 4 3 ../drivers/gpu/drm/msm/msm_drv.c:468:18: warning: unused variable 'kms' [-Wunused-variable] 2 ../drivers/xen/balloon.c:154:13: warning: 'release_memory_resource' declared 'static' but never defined [-Wunused-function] 1 ../lib/lz4/lz4hc_compress.c:514:1: warning: the frame size of 1472 bytes is larger than 1024 bytes [-Wframe-larger-than=] 1 ../drivers/mtd/chips/cfi_cmdset_0020.c:651:1: warning: the frame size of 1032 bytes is larger than 1024 bytes [-Wframe-larger-than=] =============================================================================== Detailed per-defconfig build reports below: ------------------------------------------------------------------------------- arm64-allmodconfig : PASS, 0 errors, 2 warnings, 0 section mismatches Warnings: ../drivers/gpu/drm/msm/msm_drv.c:468:18: warning: unused variable 'kms' [-Wunused-variable] ../drivers/xen/balloon.c:154:13: warning: 'release_memory_resource' declared 'static' but never defined [-Wunused-function] ------------------------------------------------------------------------------- arm-multi_v7_defconfig : PASS, 0 errors, 1 warnings, 0 section mismatches Warnings: ../drivers/gpu/drm/msm/msm_drv.c:468:18: warning: unused variable 'kms' [-Wunused-variable] ------------------------------------------------------------------------------- arm-allmodconfig : PASS, 0 errors, 3 warnings, 0 section mismatches Warnings: ../lib/lz4/lz4hc_compress.c:514:1: warning: the frame size of 1472 bytes is larger than 1024 bytes [-Wframe-larger-than=] ../drivers/gpu/drm/msm/msm_drv.c:468:18: warning: unused variable 'kms' [-Wunused-variable] ../drivers/mtd/chips/cfi_cmdset_0020.c:651:1: warning: the frame size of 1032 bytes is larger than 1024 bytes [-Wframe-larger-than=] ------------------------------------------------------------------------------- arm64-defconfig : PASS, 0 errors, 1 warnings, 0 section mismatches Warnings: ../drivers/xen/balloon.c:154:13: warning: 'release_memory_resource' declared 'static' but never defined [-Wunused-function] ------------------------------------------------------------------------------- Passed with no errors, warnings or mismatches: x86_64-allnoconfig arm64-allnoconfig arm-allnoconfig arm-multi_v5_defconfig x86_64-defconfig

8 years, 10 months

v4.6 build: 0 failures 4 warnings (v4.6)

by Build bot for Mark Brown

Tree/Branch: v4.6 Git describe: v4.6 Commit: 2dcd0af568 Linux 4.6 Build Time: 154 min 59 sec Passed: 9 / 9 (100.00 %) Failed: 0 / 9 ( 0.00 %) Errors: 0 Warnings: 4 Section Mismatches: 0 ------------------------------------------------------------------------------- defconfigs with issues (other than build errors): 2 warnings 0 mismatches : arm64-allmodconfig 1 warnings 0 mismatches : arm-multi_v7_defconfig 3 warnings 0 mismatches : arm-allmodconfig 1 warnings 0 mismatches : arm64-defconfig ------------------------------------------------------------------------------- Warnings Summary: 4 3 ../drivers/gpu/drm/msm/msm_drv.c:468:18: warning: unused variable 'kms' [-Wunused-variable] 2 ../drivers/xen/balloon.c:154:13: warning: 'release_memory_resource' declared 'static' but never defined [-Wunused-function] 1 ../lib/lz4/lz4hc_compress.c:514:1: warning: the frame size of 1472 bytes is larger than 1024 bytes [-Wframe-larger-than=] 1 ../drivers/mtd/chips/cfi_cmdset_0020.c:651:1: warning: the frame size of 1032 bytes is larger than 1024 bytes [-Wframe-larger-than=] =============================================================================== Detailed per-defconfig build reports below: ------------------------------------------------------------------------------- arm64-allmodconfig : PASS, 0 errors, 2 warnings, 0 section mismatches Warnings: ../drivers/gpu/drm/msm/msm_drv.c:468:18: warning: unused variable 'kms' [-Wunused-variable] ../drivers/xen/balloon.c:154:13: warning: 'release_memory_resource' declared 'static' but never defined [-Wunused-function] ------------------------------------------------------------------------------- arm-multi_v7_defconfig : PASS, 0 errors, 1 warnings, 0 section mismatches Warnings: ../drivers/gpu/drm/msm/msm_drv.c:468:18: warning: unused variable 'kms' [-Wunused-variable] ------------------------------------------------------------------------------- arm-allmodconfig : PASS, 0 errors, 3 warnings, 0 section mismatches Warnings: ../lib/lz4/lz4hc_compress.c:514:1: warning: the frame size of 1472 bytes is larger than 1024 bytes [-Wframe-larger-than=] ../drivers/gpu/drm/msm/msm_drv.c:468:18: warning: unused variable 'kms' [-Wunused-variable] ../drivers/mtd/chips/cfi_cmdset_0020.c:651:1: warning: the frame size of 1032 bytes is larger than 1024 bytes [-Wframe-larger-than=] ------------------------------------------------------------------------------- arm64-defconfig : PASS, 0 errors, 1 warnings, 0 section mismatches Warnings: ../drivers/xen/balloon.c:154:13: warning: 'release_memory_resource' declared 'static' but never defined [-Wunused-function] ------------------------------------------------------------------------------- Passed with no errors, warnings or mismatches: x86_64-allnoconfig arm64-allnoconfig arm-allnoconfig arm-multi_v5_defconfig x86_64-defconfig close failed in file object destructor: sys.excepthook is missing lost sys.stderr

8 years, 10 months

[PATCH net-next] bpf: arm64: remove callee-save registers use for tmp registers

by Yang Shi

In the current implementation of ARM64 eBPF JIT, R23 and R24 are used for tmp registers, which are callee-saved registers. This leads to variable size of JIT prologue and epilogue. The latest blinding constant change prefers to constant size of prologue and epilogue. AAPCS reserves R9 ~ R15 for temp registers which not need to be saved/restored during function call. So, replace R23 and R24 to R10 and R11, and remove tmp_used flag. CC: Zi Shen Lim <zlim.lnx(a)gmail.com> CC: Daniel Borkmann <daniel(a)iogearbox.net> Signed-off-by: Yang Shi <yang.shi(a)linaro.org> --- Apply on top of Daniel's blinding constant patchset. arch/arm64/net/bpf_jit_comp.c | 32 ++++---------------------------- 1 file changed, 4 insertions(+), 28 deletions(-) diff --git a/arch/arm64/net/bpf_jit_comp.c b/arch/arm64/net/bpf_jit_comp.c index d0d5190..ef3055a 100644 --- a/arch/arm64/net/bpf_jit_comp.c +++ b/arch/arm64/net/bpf_jit_comp.c @@ -51,9 +51,9 @@ static const int bpf2a64[] = { [BPF_REG_9] = A64_R(22), /* read-only frame pointer to access stack */ [BPF_REG_FP] = A64_R(25), - /* temporary register for internal BPF JIT */ - [TMP_REG_1] = A64_R(23), - [TMP_REG_2] = A64_R(24), + /* temporary registers for internal BPF JIT */ + [TMP_REG_1] = A64_R(10), + [TMP_REG_2] = A64_R(11), /* temporary register for blinding constants */ [BPF_REG_AX] = A64_R(9), }; @@ -61,7 +61,6 @@ static const int bpf2a64[] = { struct jit_ctx { const struct bpf_prog *prog; int idx; - int tmp_used; int epilogue_offset; int *offset; u32 *image; @@ -154,8 +153,6 @@ static void build_prologue(struct jit_ctx *ctx) const u8 r8 = bpf2a64[BPF_REG_8]; const u8 r9 = bpf2a64[BPF_REG_9]; const u8 fp = bpf2a64[BPF_REG_FP]; - const u8 tmp1 = bpf2a64[TMP_REG_1]; - const u8 tmp2 = bpf2a64[TMP_REG_2]; /* * BPF prog stack layout @@ -189,8 +186,6 @@ static void build_prologue(struct jit_ctx *ctx) /* Save callee-saved register */ emit(A64_PUSH(r6, r7, A64_SP), ctx); emit(A64_PUSH(r8, r9, A64_SP), ctx); - if (ctx->tmp_used) - emit(A64_PUSH(tmp1, tmp2, A64_SP), ctx); /* Save fp (x25) and x26. SP requires 16 bytes alignment */ emit(A64_PUSH(fp, A64_R(26), A64_SP), ctx); @@ -210,8 +205,6 @@ static void build_epilogue(struct jit_ctx *ctx) const u8 r8 = bpf2a64[BPF_REG_8]; const u8 r9 = bpf2a64[BPF_REG_9]; const u8 fp = bpf2a64[BPF_REG_FP]; - const u8 tmp1 = bpf2a64[TMP_REG_1]; - const u8 tmp2 = bpf2a64[TMP_REG_2]; /* We're done with BPF stack */ emit(A64_ADD_I(1, A64_SP, A64_SP, STACK_SIZE), ctx); @@ -220,8 +213,6 @@ static void build_epilogue(struct jit_ctx *ctx) emit(A64_POP(fp, A64_R(26), A64_SP), ctx); /* Restore callee-saved register */ - if (ctx->tmp_used) - emit(A64_POP(tmp1, tmp2, A64_SP), ctx); emit(A64_POP(r8, r9, A64_SP), ctx); emit(A64_POP(r6, r7, A64_SP), ctx); @@ -317,7 +308,6 @@ static int build_insn(const struct bpf_insn *insn, struct jit_ctx *ctx) emit(A64_UDIV(is64, dst, dst, src), ctx); break; case BPF_MOD: - ctx->tmp_used = 1; emit(A64_UDIV(is64, tmp, dst, src), ctx); emit(A64_MUL(is64, tmp, tmp, src), ctx); emit(A64_SUB(is64, dst, dst, tmp), ctx); @@ -390,49 +380,41 @@ emit_bswap_uxt: /* dst = dst OP imm */ case BPF_ALU | BPF_ADD | BPF_K: case BPF_ALU64 | BPF_ADD | BPF_K: - ctx->tmp_used = 1; emit_a64_mov_i(is64, tmp, imm, ctx); emit(A64_ADD(is64, dst, dst, tmp), ctx); break; case BPF_ALU | BPF_SUB | BPF_K: case BPF_ALU64 | BPF_SUB | BPF_K: - ctx->tmp_used = 1; emit_a64_mov_i(is64, tmp, imm, ctx); emit(A64_SUB(is64, dst, dst, tmp), ctx); break; case BPF_ALU | BPF_AND | BPF_K: case BPF_ALU64 | BPF_AND | BPF_K: - ctx->tmp_used = 1; emit_a64_mov_i(is64, tmp, imm, ctx); emit(A64_AND(is64, dst, dst, tmp), ctx); break; case BPF_ALU | BPF_OR | BPF_K: case BPF_ALU64 | BPF_OR | BPF_K: - ctx->tmp_used = 1; emit_a64_mov_i(is64, tmp, imm, ctx); emit(A64_ORR(is64, dst, dst, tmp), ctx); break; case BPF_ALU | BPF_XOR | BPF_K: case BPF_ALU64 | BPF_XOR | BPF_K: - ctx->tmp_used = 1; emit_a64_mov_i(is64, tmp, imm, ctx); emit(A64_EOR(is64, dst, dst, tmp), ctx); break; case BPF_ALU | BPF_MUL | BPF_K: case BPF_ALU64 | BPF_MUL | BPF_K: - ctx->tmp_used = 1; emit_a64_mov_i(is64, tmp, imm, ctx); emit(A64_MUL(is64, dst, dst, tmp), ctx); break; case BPF_ALU | BPF_DIV | BPF_K: case BPF_ALU64 | BPF_DIV | BPF_K: - ctx->tmp_used = 1; emit_a64_mov_i(is64, tmp, imm, ctx); emit(A64_UDIV(is64, dst, dst, tmp), ctx); break; case BPF_ALU | BPF_MOD | BPF_K: case BPF_ALU64 | BPF_MOD | BPF_K: - ctx->tmp_used = 1; emit_a64_mov_i(is64, tmp2, imm, ctx); emit(A64_UDIV(is64, tmp, dst, tmp2), ctx); emit(A64_MUL(is64, tmp, tmp, tmp2), ctx); @@ -503,12 +485,10 @@ emit_cond_jmp: case BPF_JMP | BPF_JNE | BPF_K: case BPF_JMP | BPF_JSGT | BPF_K: case BPF_JMP | BPF_JSGE | BPF_K: - ctx->tmp_used = 1; emit_a64_mov_i(1, tmp, imm, ctx); emit(A64_CMP(1, dst, tmp), ctx); goto emit_cond_jmp; case BPF_JMP | BPF_JSET | BPF_K: - ctx->tmp_used = 1; emit_a64_mov_i(1, tmp, imm, ctx); emit(A64_TST(1, dst, tmp), ctx); goto emit_cond_jmp; @@ -518,7 +498,6 @@ emit_cond_jmp: const u8 r0 = bpf2a64[BPF_REG_0]; const u64 func = (u64)__bpf_call_base + imm; - ctx->tmp_used = 1; emit_a64_mov_i64(tmp, func, ctx); emit(A64_PUSH(A64_FP, A64_LR, A64_SP), ctx); emit(A64_MOV(1, A64_FP, A64_SP), ctx); @@ -564,7 +543,6 @@ emit_cond_jmp: case BPF_LDX | BPF_MEM | BPF_H: case BPF_LDX | BPF_MEM | BPF_B: case BPF_LDX | BPF_MEM | BPF_DW: - ctx->tmp_used = 1; emit_a64_mov_i(1, tmp, off, ctx); switch (BPF_SIZE(code)) { case BPF_W: @@ -588,7 +566,6 @@ emit_cond_jmp: case BPF_ST | BPF_MEM | BPF_B: case BPF_ST | BPF_MEM | BPF_DW: /* Load imm to a register then store it */ - ctx->tmp_used = 1; emit_a64_mov_i(1, tmp2, off, ctx); emit_a64_mov_i(1, tmp, imm, ctx); switch (BPF_SIZE(code)) { @@ -612,7 +589,6 @@ emit_cond_jmp: case BPF_STX | BPF_MEM | BPF_H: case BPF_STX | BPF_MEM | BPF_B: case BPF_STX | BPF_MEM | BPF_DW: - ctx->tmp_used = 1; emit_a64_mov_i(1, tmp, off, ctx); switch (BPF_SIZE(code)) { case BPF_W: @@ -798,7 +774,7 @@ struct bpf_prog *bpf_int_jit_compile(struct bpf_prog *prog) /* 1. Initial fake pass to compute ctx->idx. */ - /* Fake pass to fill in ctx->offset and ctx->tmp_used. */ + /* Fake pass to fill in ctx->offset. */ if (build_body(&ctx)) { prog = orig_prog; goto out_off; -- 2.0.2

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linaro-kernel May 2016