- Linux-kselftest-mirror - lists.linaro.org

by Jakub Olejniczak

Dzień dobry, kontaktuję się z Państwem, ponieważ chciałbym zaproponować wygodne rozwiązanie, które umożliwi Państwa firmie stabilny rozwój. Konkurencyjne otoczenie wymaga ciągłego ulepszania i poszerzenia oferty, co z kolei wiąże się z koniecznością inwestowania. Brak odpowiedniego kapitału poważnie ogranicza tempo rozwoju firmy. Od wielu lat z powodzeniem pomagam firmom w uzyskaniu najlepszej formy finansowania z banku oraz UE. Mam stałych Klientów, którzy nadal chętnie korzystają z moich usług, a także polecają je innym. Czy chcieliby Państwo skorzystać z pomocy wykwalifikowanego i doświadczonego doradcy finansowego? Pozdrawiam Jakub Olejniczak

2 years, 1 month

1
0
0 0

[net-next] selftests: Fix the if conditions of in test_extra_filter()

by Wang Yufen

The socket 2 bind the addr in use, bind should fail with EADDRINUSE. So if bind success or errno != EADDRINUSE, testcase should be failed. Signed-off-by: Wang Yufen <wangyufen(a)huawei.com> --- tools/testing/selftests/net/reuseport_bpf.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/tools/testing/selftests/net/reuseport_bpf.c b/tools/testing/selftests/net/reuseport_bpf.c index 072d709c..65aea27 100644 --- a/tools/testing/selftests/net/reuseport_bpf.c +++ b/tools/testing/selftests/net/reuseport_bpf.c @@ -328,7 +328,7 @@ static void test_extra_filter(const struct test_params p) if (bind(fd1, addr, sockaddr_size())) error(1, errno, "failed to bind recv socket 1"); - if (!bind(fd2, addr, sockaddr_size()) && errno != EADDRINUSE) + if (!bind(fd2, addr, sockaddr_size()) || errno != EADDRINUSE) error(1, errno, "bind socket 2 should fail with EADDRINUSE"); free(addr); -- 1.8.3.1

2 years, 1 month

3
2
0 0

[PATCH linux-next] KVM: selftests: remove redundant variable tsc_val

by cgel.zte＠gmail.com

From: Jinpeng Cui <cui.jinpeng2(a)zte.com.cn> Return value directly from expression instead of getting value from redundant variable tsc_val. Reported-by: Zeal Robot <zealci(a)zte.com.cn> Signed-off-by: Jinpeng Cui <cui.jinpeng2(a)zte.com.cn> --- tools/testing/selftests/kvm/include/x86_64/processor.h | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) diff --git a/tools/testing/selftests/kvm/include/x86_64/processor.h b/tools/testing/selftests/kvm/include/x86_64/processor.h index 0cbc71b7af50..75920678f34d 100644 --- a/tools/testing/selftests/kvm/include/x86_64/processor.h +++ b/tools/testing/selftests/kvm/include/x86_64/processor.h @@ -237,7 +237,6 @@ static inline uint64_t get_desc64_base(const struct desc64 *desc) static inline uint64_t rdtsc(void) { uint32_t eax, edx; - uint64_t tsc_val; /* * The lfence is to wait (on Intel CPUs) until all previous * instructions have been executed. If software requires RDTSC to be @@ -245,8 +244,8 @@ static inline uint64_t rdtsc(void) * execute LFENCE immediately after RDTSC */ __asm__ __volatile__("lfence; rdtsc; lfence" : "=a"(eax), "=d"(edx)); - tsc_val = ((uint64_t)edx) << 32 | eax; - return tsc_val; + + return ((uint64_t)edx) << 32 | eax; } static inline uint64_t rdtscp(uint32_t *aux) -- 2.25.1

2 years, 1 month

5
5
0 0

[PATCH net-next,v3 00/18] refactor duplicate codes in the qdisc class walk function

by Zhengchao Shao

The walk implementation of most qdisc class modules is basically the same. That is, the values of count and skip are checked first. If count is greater than or equal to skip, the registered fn function is executed. Otherwise, increase the value of count. So the code can be refactored. The walk function is invoked during dump. Therefore, test cases related to the tdc filter need to be added. Last, thanks to Victor and Toke for their review. Add test cases locally and perform the test. The test results are listed below: ./tdc.py -c cake ok 1 1212 - Create CAKE with default setting ok 2 3281 - Create CAKE with bandwidth limit ok 3 c940 - Create CAKE with autorate-ingress flag ok 4 2310 - Create CAKE with rtt time ok 5 2385 - Create CAKE with besteffort flag ok 6 a032 - Create CAKE with diffserv8 flag ok 7 2349 - Create CAKE with diffserv4 flag ok 8 8472 - Create CAKE with flowblind flag ok 9 2341 - Create CAKE with dsthost and nat flag ok 10 5134 - Create CAKE with wash flag ok 11 2302 - Create CAKE with flowblind and no-split-gso flag ok 12 0768 - Create CAKE with dual-srchost and ack-filter flag ok 13 0238 - Create CAKE with dual-dsthost and ack-filter-aggressive flag ok 14 6572 - Create CAKE with memlimit and ptm flag ok 15 2436 - Create CAKE with fwmark and atm flag ok 16 3984 - Create CAKE with overhead and mpu ok 17 5421 - Create CAKE with conservative and ingress flag ok 18 6854 - Delete CAKE with conservative and ingress flag ok 19 2342 - Replace CAKE with mpu ok 20 2313 - Change CAKE with mpu ok 21 4365 - Show CAKE class ./tdc.py -c cbq ok 1 3460 - Create CBQ with default setting ok 2 0592 - Create CBQ with mpu ok 3 4684 - Create CBQ with valid cell num ok 4 4345 - Create CBQ with invalid cell num ok 5 4525 - Create CBQ with valid ewma ok 6 6784 - Create CBQ with invalid ewma ok 7 5468 - Delete CBQ with handle ok 8 492a - Show CBQ class ./tdc.py -c cbs ok 1 1820 - Create CBS with default setting ok 2 1532 - Create CBS with hicredit setting ok 3 2078 - Create CBS with locredit setting ok 4 9271 - Create CBS with sendslope setting ok 5 0482 - Create CBS with idleslope setting ok 6 e8f3 - Create CBS with multiple setting ok 7 23c9 - Replace CBS with sendslope setting ok 8 a07a - Change CBS with idleslope setting ok 9 43b3 - Delete CBS with handle ok 10 9472 - Show CBS class ./tdc.py -c drr ok 1 0385 - Create DRR with default setting ok 2 2375 - Delete DRR with handle ok 3 3092 - Show DRR class ./tdc.py -c dsmark ok 1 6345 - Create DSMARK with default setting ok 2 3462 - Create DSMARK with default_index setting ok 3 ca95 - Create DSMARK with set_tc_index flag ok 4 a950 - Create DSMARK with multiple setting ok 5 4092 - Delete DSMARK with handle ok 6 5930 - Show DSMARK class ./tdc.py -c fq_codel ok 1 4957 - Create FQ_CODEL with default setting ok 2 7621 - Create FQ_CODEL with limit setting ok 3 6871 - Create FQ_CODEL with memory_limit setting ok 4 5636 - Create FQ_CODEL with target setting ok 5 630a - Create FQ_CODEL with interval setting ok 6 4324 - Create FQ_CODEL with quantum setting ok 7 b190 - Create FQ_CODEL with noecn flag ok 8 5381 - Create FQ_CODEL with ce_threshold setting ok 9 c9d2 - Create FQ_CODEL with drop_batch setting ok 10 523b - Create FQ_CODEL with multiple setting ok 11 9283 - Replace FQ_CODEL with noecn setting ok 12 3459 - Change FQ_CODEL with limit setting ok 13 0128 - Delete FQ_CODEL with handle ok 14 0435 - Show FQ_CODEL class ./tdc.py -c hfsc ok 1 3254 - Create HFSC with default setting ok 2 0289 - Create HFSC with class sc and ul rate setting ok 3 846a - Create HFSC with class sc umax and dmax setting ok 4 5413 - Create HFSC with class rt and ls rate setting ok 5 9312 - Create HFSC with class rt umax and dmax setting ok 6 6931 - Delete HFSC with handle ok 7 8436 - Show HFSC class ./tdc.py -c htb ok 1 0904 - Create HTB with default setting ok 2 3906 - Create HTB with default-N setting ok 3 8492 - Create HTB with r2q setting ok 4 9502 - Create HTB with direct_qlen setting ok 5 b924 - Create HTB with class rate and burst setting ok 6 4359 - Create HTB with class mpu setting ok 7 9048 - Create HTB with class prio setting ok 8 4994 - Create HTB with class ceil setting ok 9 9523 - Create HTB with class cburst setting ok 10 5353 - Create HTB with class mtu setting ok 11 346a - Create HTB with class quantum setting ok 12 303a - Delete HTB with handle ./tdc.py -c mqprio ok 1 9903 - Add mqprio Qdisc to multi-queue device (8 queues) ok 2 453a - Delete nonexistent mqprio Qdisc ok 3 5292 - Delete mqprio Qdisc twice ok 4 45a9 - Add mqprio Qdisc to single-queue device ok 5 2ba9 - Show mqprio class ./tdc.py -c multiq ok 1 20ba - Add multiq Qdisc to multi-queue device (8 queues) ok 2 4301 - List multiq Class ok 3 7832 - Delete nonexistent multiq Qdisc ok 4 2891 - Delete multiq Qdisc twice ok 5 1329 - Add multiq Qdisc to single-queue device ./tdc.py -c netem ok 1 cb28 - Create NETEM with default setting ok 2 a089 - Create NETEM with limit flag ok 3 3449 - Create NETEM with delay time ok 4 3782 - Create NETEM with distribution and corrupt flag ok 5 2b82 - Create NETEM with distribution and duplicate flag ok 6 a932 - Create NETEM with distribution and loss flag ok 7 e01a - Create NETEM with distribution and loss state flag ok 8 ba29 - Create NETEM with loss gemodel flag ok 9 0492 - Create NETEM with reorder flag ok 10 7862 - Create NETEM with rate limit ok 11 7235 - Create NETEM with multiple slot rate ok 12 5439 - Create NETEM with multiple slot setting ok 13 5029 - Change NETEM with loss state ok 14 3785 - Replace NETEM with delay time ok 15 4502 - Delete NETEM with handle ok 16 0785 - Show NETEM class ./tdc.py -c qfq ok 1 0582 - Create QFQ with default setting ok 2 c9a3 - Create QFQ with class weight setting ok 3 8452 - Create QFQ with class maxpkt setting ok 4 d920 - Create QFQ with multiple class setting ok 5 0548 - Delete QFQ with handle ok 6 5901 - Show QFQ class ./tdc.py -e 0521 ok 1 0521 - Show ingress class ./tdc.py -e 1023 ok 1 1023 - Show mq class ./tdc.py -e 2410 ok 1 2410 - Show prio class ./tdc.py -e 290a ok 1 290a - Show RED class --- v3: adjust the order of input parameters, and modify subject prefix of tc-testing v2: change the ID of test case --- Zhengchao Shao (18): net/sched: sch_api: add helper for tc qdisc walker stats dump net/sched: use tc_qdisc_stats_dump() in qdisc selftests/tc-testing: add selftests for cake qdisc selftests/tc-testing: add selftests for cbq qdisc selftests/tc-testing: add selftests for cbs qdisc selftests/tc-testing: add selftests for drr qdisc selftests/tc-testing: add selftests for dsmark qdisc selftests/tc-testing: add selftests for fq_codel qdisc selftests/tc-testing: add selftests for hfsc qdisc selftests/tc-testing: add selftests for htb qdisc selftests/tc-testing: add selftests for mqprio qdisc selftests/tc-testing: add selftests for multiq qdisc selftests/tc-testing: add selftests for netem qdisc selftests/tc-testing: add selftests for qfq qdisc selftests/tc-testing: add show class case for ingress qdisc selftests/tc-testing: add show class case for mq qdisc selftests/tc-testing: add show class case for prio qdisc selftests/tc-testing: add show class case for red qdisc include/net/pkt_sched.h | 13 + net/sched/sch_atm.c | 6 +- net/sched/sch_cake.c | 9 +- net/sched/sch_cbq.c | 9 +- net/sched/sch_cbs.c | 8 +- net/sched/sch_drr.c | 9 +- net/sched/sch_dsmark.c | 14 +- net/sched/sch_ets.c | 9 +- net/sched/sch_fq_codel.c | 8 +- net/sched/sch_hfsc.c | 9 +- net/sched/sch_htb.c | 9 +- net/sched/sch_mq.c | 5 +- net/sched/sch_mqprio.c | 5 +- net/sched/sch_multiq.c | 9 +- net/sched/sch_netem.c | 8 +- net/sched/sch_prio.c | 9 +- net/sched/sch_qfq.c | 9 +- net/sched/sch_red.c | 7 +- net/sched/sch_sfb.c | 7 +- net/sched/sch_sfq.c | 8 +- net/sched/sch_skbprio.c | 9 +- net/sched/sch_taprio.c | 5 +- net/sched/sch_tbf.c | 7 +- .../tc-testing/tc-tests/qdiscs/cake.json | 487 ++++++++++++++++++ .../tc-testing/tc-tests/qdiscs/cbq.json | 184 +++++++ .../tc-testing/tc-tests/qdiscs/cbs.json | 234 +++++++++ .../tc-testing/tc-tests/qdiscs/drr.json | 71 +++ .../tc-testing/tc-tests/qdiscs/dsmark.json | 140 +++++ .../tc-testing/tc-tests/qdiscs/fq_codel.json | 326 ++++++++++++ .../tc-testing/tc-tests/qdiscs/hfsc.json | 167 ++++++ .../tc-testing/tc-tests/qdiscs/htb.json | 285 ++++++++++ .../tc-testing/tc-tests/qdiscs/ingress.json | 20 + .../tc-testing/tc-tests/qdiscs/mq.json | 24 +- .../tc-testing/tc-tests/qdiscs/mqprio.json | 114 ++++ .../tc-testing/tc-tests/qdiscs/multiq.json | 114 ++++ .../tc-testing/tc-tests/qdiscs/netem.json | 372 +++++++++++++ .../tc-testing/tc-tests/qdiscs/prio.json | 20 + .../tc-testing/tc-tests/qdiscs/qfq.json | 145 ++++++ .../tc-testing/tc-tests/qdiscs/red.json | 23 + 39 files changed, 2769 insertions(+), 148 deletions(-) create mode 100644 tools/testing/selftests/tc-testing/tc-tests/qdiscs/cake.json create mode 100644 tools/testing/selftests/tc-testing/tc-tests/qdiscs/cbq.json create mode 100644 tools/testing/selftests/tc-testing/tc-tests/qdiscs/cbs.json create mode 100644 tools/testing/selftests/tc-testing/tc-tests/qdiscs/drr.json create mode 100644 tools/testing/selftests/tc-testing/tc-tests/qdiscs/dsmark.json create mode 100644 tools/testing/selftests/tc-testing/tc-tests/qdiscs/fq_codel.json create mode 100644 tools/testing/selftests/tc-testing/tc-tests/qdiscs/hfsc.json create mode 100644 tools/testing/selftests/tc-testing/tc-tests/qdiscs/htb.json create mode 100644 tools/testing/selftests/tc-testing/tc-tests/qdiscs/mqprio.json create mode 100644 tools/testing/selftests/tc-testing/tc-tests/qdiscs/multiq.json create mode 100644 tools/testing/selftests/tc-testing/tc-tests/qdiscs/netem.json create mode 100644 tools/testing/selftests/tc-testing/tc-tests/qdiscs/qfq.json -- 2.17.1

2 years, 1 month

2
1
0 0

[PATCH -next, v3 00/10] cleanup in Huawei hinic driver

by Zhengchao Shao

Do code cleanup in Huawei hinic driver. Zhengchao Shao (10): net: hinic: modify kernel doc comments net: hinic: change type of function to be static net: hinic: remove unused functions net: hinic: remove unused macro net: hinic: remove duplicate macro definition net: hinic: simplify code logic net: hinic: change hinic_deinit_vf_hw() to void net: hinic: remove unused enumerated value net: hinic: replace magic numbers with macro net: hinic: remove the unused input parameter prod_idx in sq_prepare_ctrl() .../net/ethernet/huawei/hinic/hinic_debugfs.h | 1 - .../net/ethernet/huawei/hinic/hinic_ethtool.c | 1 - .../net/ethernet/huawei/hinic/hinic_hw_cmdq.c | 9 ++--- .../net/ethernet/huawei/hinic/hinic_hw_cmdq.h | 3 -- .../net/ethernet/huawei/hinic/hinic_hw_csr.h | 1 - .../net/ethernet/huawei/hinic/hinic_hw_dev.c | 17 ++------- .../net/ethernet/huawei/hinic/hinic_hw_dev.h | 5 --- .../net/ethernet/huawei/hinic/hinic_hw_if.c | 35 ------------------- .../net/ethernet/huawei/hinic/hinic_hw_if.h | 9 ----- .../net/ethernet/huawei/hinic/hinic_hw_mbox.c | 9 ++--- .../net/ethernet/huawei/hinic/hinic_hw_mbox.h | 4 --- .../net/ethernet/huawei/hinic/hinic_hw_qp.c | 11 +++--- .../net/ethernet/huawei/hinic/hinic_hw_qp.h | 5 ++- .../net/ethernet/huawei/hinic/hinic_hw_wq.c | 2 -- .../net/ethernet/huawei/hinic/hinic_hw_wqe.h | 25 ------------- .../net/ethernet/huawei/hinic/hinic_main.c | 4 --- drivers/net/ethernet/huawei/hinic/hinic_rx.c | 2 +- drivers/net/ethernet/huawei/hinic/hinic_rx.h | 2 -- .../net/ethernet/huawei/hinic/hinic_sriov.c | 15 ++++---- .../net/ethernet/huawei/hinic/hinic_sriov.h | 2 -- drivers/net/ethernet/huawei/hinic/hinic_tx.c | 6 ++-- drivers/net/ethernet/huawei/hinic/hinic_tx.h | 2 -- 22 files changed, 23 insertions(+), 147 deletions(-) -- 2.17.1

2 years, 1 month

2
11
0 0

[PATCH] kselftest/arm64: Fix typo in hwcap check

by Mark Brown

We use a local variable hwcap to refer to the element of the hwcaps array which we are currently checking. When checking for the relevant hwcap bit being set in testing we were dereferencing hwcaps rather than hwcap in fetching the AT_HWCAP to use, which is perfectly valid C but means we were always checking the bit was set in the hwcap for whichever feature is first in the array. Remove the stray s. Signed-off-by: Mark Brown <broonie(a)kernel.org> --- tools/testing/selftests/arm64/abi/hwcap.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/tools/testing/selftests/arm64/abi/hwcap.c b/tools/testing/selftests/arm64/abi/hwcap.c index 322d9b92bbe3..75eb470eb432 100644 --- a/tools/testing/selftests/arm64/abi/hwcap.c +++ b/tools/testing/selftests/arm64/abi/hwcap.c @@ -307,7 +307,7 @@ int main(void) for (i = 0; i < ARRAY_SIZE(hwcaps); i++) { hwcap = &hwcaps[i]; - have_hwcap = getauxval(hwcaps->at_hwcap) & hwcap->hwcap_bit; + have_hwcap = getauxval(hwcap->at_hwcap) & hwcap->hwcap_bit; have_cpuinfo = cpuinfo_present(hwcap->cpuinfo); if (have_hwcap) -- 2.30.2

2 years, 1 month

2
1
0 0

[PATCH v2 2/4] selftests/x86/mxcsr: Test the MXCSR state write via ptrace

by Chang S. Bae

The ptrace buffer is in the non-compacted format. The MXCSR state should be written to the target thread when either SSE or AVX component is enabled. Write an MXCSR value to the target and read back. Then it is validated with the XRSTOR/XSAVE result on the current. Signed-off-by: Chang S. Bae <chang.seok.bae(a)intel.com> Cc: x86(a)kernel.org Cc: linux-kernel(a)vger.kernel.org Cc: linux-kselftest(a)vger.kernel.org --- If this is acceptable, I will also follow up to move some of the helper functions to a .h file from this and other test cases because duplicating what is shareable should be avoided. --- tools/testing/selftests/x86/Makefile | 2 +- tools/testing/selftests/x86/mxcsr.c | 200 +++++++++++++++++++++++++++ 2 files changed, 201 insertions(+), 1 deletion(-) create mode 100644 tools/testing/selftests/x86/mxcsr.c diff --git a/tools/testing/selftests/x86/Makefile b/tools/testing/selftests/x86/Makefile index 0388c4d60af0..621c47960be3 100644 --- a/tools/testing/selftests/x86/Makefile +++ b/tools/testing/selftests/x86/Makefile @@ -13,7 +13,7 @@ CAN_BUILD_WITH_NOPIE := $(shell ./check_cc.sh "$(CC)" trivial_program.c -no-pie) TARGETS_C_BOTHBITS := single_step_syscall sysret_ss_attrs syscall_nt test_mremap_vdso \ check_initial_reg_state sigreturn iopl ioperm \ test_vsyscall mov_ss_trap \ - syscall_arg_fault fsgsbase_restore sigaltstack + syscall_arg_fault fsgsbase_restore sigaltstack mxcsr TARGETS_C_32BIT_ONLY := entry_from_vm86 test_syscall_vdso unwind_vdso \ test_FCMOV test_FCOMI test_FISTTP \ vdso_restorer diff --git a/tools/testing/selftests/x86/mxcsr.c b/tools/testing/selftests/x86/mxcsr.c new file mode 100644 index 000000000000..7c318c48b4be --- /dev/null +++ b/tools/testing/selftests/x86/mxcsr.c @@ -0,0 +1,200 @@ +// SPDX-License-Identifier: GPL-2.0 + +#define _GNU_SOURCE +#include <err.h> +#include <elf.h> +#include <stdbool.h> +#include <stdio.h> +#include <string.h> +#include <unistd.h> +#include <x86intrin.h> + +#include <sys/ptrace.h> +#include <sys/syscall.h> +#include <sys/wait.h> +#include <sys/uio.h> + +#include "../kselftest.h" /* For __cpuid_count() */ + +#define LEGACY_STATE_SIZE 24 +#define MXCSR_SIZE 8 +#define STSTATE_SIZE 8*16 +#define XMM_SIZE 16*16 +#define PADDING_SIZE 96 +#define XSAVE_HDR_SIZE 64 + +struct xsave_buffer { + uint8_t legacy_state[LEGACY_STATE_SIZE]; + uint8_t mxcsr[MXCSR_SIZE]; + uint8_t st_state[STSTATE_SIZE]; + uint8_t xmm_state[XMM_SIZE]; + uint8_t padding[PADDING_SIZE]; + uint8_t header[XSAVE_HDR_SIZE]; + uint8_t extended[0]; +}; + +#ifdef __x86_64__ +#define REX_PREFIX "0x48, " +#else +#define REX_PREFIX +#endif + +#define XSAVE ".byte " REX_PREFIX "0x0f,0xae,0x27" +#define XRSTOR ".byte " REX_PREFIX "0x0f,0xae,0x2f" + +static inline uint64_t xgetbv(uint32_t index) +{ + uint32_t eax, edx; + + asm volatile("xgetbv" + : "=a" (eax), "=d" (edx) + : "c" (index)); + return eax + ((uint64_t)edx << 32); +} + +static inline void xsave(struct xsave_buffer *xbuf, uint64_t rfbm) +{ + uint32_t rfbm_lo = rfbm; + uint32_t rfbm_hi = rfbm >> 32; + + asm volatile(XSAVE :: "D" (xbuf), "a" (rfbm_lo), "d" (rfbm_hi) : "memory"); +} + +static inline void xrstor(struct xsave_buffer *xbuf, uint64_t rfbm) +{ + uint32_t rfbm_lo = rfbm; + uint32_t rfbm_hi = rfbm >> 32; + + asm volatile(XRSTOR :: "D" (xbuf), "a" (rfbm_lo), "d" (rfbm_hi)); +} + +static inline void clear_xstate_header(struct xsave_buffer *xbuf) +{ + memset(&xbuf->header, 0, sizeof(xbuf->header)); +} + +static inline uint32_t get_mxcsr(struct xsave_buffer *xbuf) +{ + return *((uint32_t *)xbuf->mxcsr); +} + +static inline void set_mxcsr(struct xsave_buffer *xbuf, uint32_t val) +{ + *((uint32_t *)xbuf->mxcsr) = val; +} + +#define XFEATURE_MASK_SSE 0x2 +#define XFEATURE_MASK_YMM 0x4 + +#define CPUID_LEAF1_ECX_XSAVE_MASK (1 << 26) +#define CPUID_LEAF1_ECX_OSXSAVE_MASK (1 << 27) +#define CPUID_LEAF_XSTATE 0xd +#define CPUID_SUBLEAF_XSTATE_USER 0x0 +#define CPUID_SUBLEAF_XSTATE_EXT 0x1 + +static bool xsave_availability(void) +{ + uint32_t eax, ebx, ecx, edx; + + __cpuid_count(1, 0, eax, ebx, ecx, edx); + if (!(ecx & CPUID_LEAF1_ECX_XSAVE_MASK)) + return false; + if (!(ecx & CPUID_LEAF1_ECX_OSXSAVE_MASK)) + return false; + return true; +} + +static uint32_t get_xbuf_size(void) +{ + uint32_t eax, ebx, ecx, edx; + + __cpuid_count(CPUID_LEAF_XSTATE, CPUID_SUBLEAF_XSTATE_USER, + eax, ebx, ecx, edx); + return ebx; +} + +static void ptrace_get(pid_t pid, struct iovec *iov) +{ + memset(iov->iov_base, 0, iov->iov_len); + + if (ptrace(PTRACE_GETREGSET, pid, (uint32_t)NT_X86_XSTATE, iov)) + err(1, "TRACE_GETREGSET"); +} + +static void ptrace_set(pid_t pid, struct iovec *iov) +{ + if (ptrace(PTRACE_SETREGSET, pid, (uint32_t)NT_X86_XSTATE, iov)) + err(1, "TRACE_SETREGSET"); +} + +int main(void) +{ + struct xsave_buffer *xbuf; + uint32_t xbuf_size; + struct iovec iov; + uint32_t mxcsr; + pid_t child; + int status; + + if (!xsave_availability()) + printf("[SKIP]\tSkip as XSAVE not available.\n"); + + xbuf_size = get_xbuf_size(); + if (!xbuf_size) + printf("[SKIP]\tSkip as XSAVE not available.\n"); + + if (!(xgetbv(0) & (XFEATURE_MASK_SSE | XFEATURE_MASK_YMM))) + printf("[SKIP]\tSkip as SSE state not available.\n"); + + xbuf = aligned_alloc(64, xbuf_size); + if (!xbuf) + err(1, "aligned_alloc()"); + + iov.iov_base = xbuf; + iov.iov_len = xbuf_size; + + child = fork(); + if (child < 0) { + err(1, "fork()"); + } else if (!child) { + if (ptrace(PTRACE_TRACEME, 0, NULL, NULL)) + err(1, "PTRACE_TRACEME"); + + raise(SIGTRAP); + _exit(0); + } + + wait(&status); + + if (WSTOPSIG(status) != SIGTRAP) + err(1, "raise(SIGTRAP)"); + + printf("[RUN]\tTest the MXCSR state write via ptrace().\n"); + + /* Set a benign value */ + set_mxcsr(xbuf, 0xabc); + /* The MXCSR state should be loaded regardless of XSTATE_BV */ + clear_xstate_header(xbuf); + + /* Write the MXCSR state both locally and remotely. */ + xrstor(xbuf, XFEATURE_MASK_SSE); + ptrace_set(child, &iov); + + /* Read the MXCSR state back for both */ + xsave(xbuf, XFEATURE_MASK_SSE); + mxcsr = get_mxcsr(xbuf); + ptrace_get(child, &iov); + + /* Cross-check with each other */ + if (mxcsr == get_mxcsr(xbuf)) + printf("[OK]\tThe written state was read back correctly.\n"); + else + printf("[FAIL]\tThe write (or read) was incorrect.\n"); + + ptrace(PTRACE_DETACH, child, NULL, NULL); + wait(&status); + if (!WIFEXITED(status) || WEXITSTATUS(status)) + err(1, "PTRACE_DETACH"); + + free(xbuf); +} -- 2.17.1

2 years, 1 month

1
0
0 0

[PATCH v4 0/4] arm64/sme: ptrace support for TPIDR2_EL0

by Mark Brown

When SME was initially merged we did not add support for TPIDR2_EL0 to the ptrace interface, creating difficulties for debuggers in accessing lazy save state for ZA. This series implements that support, extending the existing NT_ARM_TLS regset to support the register when available, and adds kselftest coverage for the existing and new NT_ARM_TLS functionality. Existing programs that query the size of the register set will be able to observe the increased size of the register set. Programs that assume the register set is single register will see no change. On systems that do not support SME TPIDR2_EL0 will read as 0 and writes will be ignored, support for SME should be queried via hwcaps as normal. v4: - Rebase onto v6.0-rc3. v3: - Fix copyright date on test program. v2: - Rebase onto v6.0-rc1. Mark Brown (4): kselftest/arm64: Add test coverage for NT_ARM_TLS arm64/ptrace: Document extension of NT_ARM_TLS to cover TPIDR2_EL0 arm64/ptrace: Support access to TPIDR2_EL0 kselftest/arm64: Add coverage of TPIDR2_EL0 ptrace interface Documentation/arm64/sme.rst | 3 + arch/arm64/kernel/ptrace.c | 25 +- tools/testing/selftests/arm64/abi/.gitignore | 1 + tools/testing/selftests/arm64/abi/Makefile | 2 +- tools/testing/selftests/arm64/abi/ptrace.c | 241 +++++++++++++++++++ 5 files changed, 266 insertions(+), 6 deletions(-) create mode 100644 tools/testing/selftests/arm64/abi/ptrace.c base-commit: b90cb1053190353cc30f0fef0ef1f378ccc063c5 -- 2.30.2

2 years, 1 month

3
9
0 0

[PATCH linux-next] kunit: tool: use absolute path for wget

by cgel.zte＠gmail.com

From: Xu Panda <xu.panda(a)zte.com.cn> Not using absolute path when invoking wget can lead to serious security issues. Reported-by: Zeal Robot <zealci(a)zte.com.cn> Signed-off-by: Xu Panda <xu.panda(a)zte.com.cn> --- tools/testing/kunit/qemu_configs/riscv.py | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/tools/testing/kunit/qemu_configs/riscv.py b/tools/testing/kunit/qemu_configs/riscv.py index 6207be146d26..c3dcd654ca15 100644 --- a/tools/testing/kunit/qemu_configs/riscv.py +++ b/tools/testing/kunit/qemu_configs/riscv.py @@ -11,7 +11,7 @@ if not os.path.isfile(OPENSBI_FILE): 'Would you like me to download it for you from:\n' + GITHUB_OPENSBI_URL + ' ?\n') response = input('yes/[no]: ') if response.strip() == 'yes': - os.system('wget ' + GITHUB_OPENSBI_URL) + os.system('/usr/bin/wget ' + GITHUB_OPENSBI_URL) else: sys.exit() -- 2.15.2

2 years, 1 month

3
4
0 0

[PATCH 0/3] fix error when writing negative value to simple attribute files

by Akinobu Mita

The simple attribute files do not accept a negative value since the commit 488dac0c9237 ("libfs: fix error cast of negative value in simple_attr_write()"), but some attribute files want to accept a negative value. Akinobu Mita (3): libfs: add DEFINE_SIMPLE_ATTRIBUTE_SIGNED for signed value lib/notifier-error-inject: fix error when writing -errno to debugfs file debugfs: fix error when writing negative value to atomic_t debugfs file .../fault-injection/fault-injection.rst | 10 +++---- fs/debugfs/file.c | 28 +++++++++++++++---- fs/libfs.c | 22 +++++++++++++-- include/linux/debugfs.h | 19 +++++++++++-- include/linux/fs.h | 12 ++++++-- lib/notifier-error-inject.c | 2 +- 6 files changed, 73 insertions(+), 20 deletions(-) -- 2.34.1

2 years, 1 month

4
8
0 0

2024

2023

2022

2021

2020

2019

2018

2017

Linux-kselftest-mirror