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[Linux-stable-mirror] [PATCH] Sparc

by David Miller

Please queue up the following bug fix for 4.14.x -stable. Thank you.

7 years, 5 months

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[Linux-stable-mirror] Patch "sparc64: Fix page table walk for PUD hugepages" has been added to the 4.14-stable tree

by gregkh＠linuxfoundation.org

This is a note to let you know that I've just added the patch titled sparc64: Fix page table walk for PUD hugepages to the 4.14-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=sum… The filename of the patch is: 0001-sparc64-Fix-page-table-walk-for-PUD-hugepages.patch and it can be found in the queue-4.14 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable(a)vger.kernel.org> know about it. >From fac33aa62841b69cd0e19a29b0e2ac96e4e8cf32 Mon Sep 17 00:00:00 2001 From: Nitin Gupta <nitin.m.gupta(a)oracle.com> Date: Fri, 3 Nov 2017 12:26:06 -0700 Subject: sparc64: Fix page table walk for PUD hugepages From: Nitin Gupta <nitin.m.gupta(a)oracle.com> [ Upstream commit 70f3c8b7c2e7ebcdde8354da004872e7c9184e97 ] For a PUD hugepage entry, we need to propagate bits [32:22] from virtual address to resolve at 4M granularity. However, the current code was incorrectly propagating bits [29:19]. This bug can cause incorrect data to be returned for pages backed with 16G hugepages. Signed-off-by: Nitin Gupta <nitin.m.gupta(a)oracle.com> Reported-by: Al Viro <viro(a)ZenIV.linux.org.uk> Cc: Al Viro <viro(a)ZenIV.linux.org.uk> Signed-off-by: David S. Miller <davem(a)davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> --- arch/sparc/include/asm/tsb.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/sparc/include/asm/tsb.h b/arch/sparc/include/asm/tsb.h index 25b6abdb3908..522a677e050d 100644 --- a/arch/sparc/include/asm/tsb.h +++ b/arch/sparc/include/asm/tsb.h @@ -217,7 +217,7 @@ extern struct tsb_phys_patch_entry __tsb_phys_patch, __tsb_phys_patch_end; sllx REG2, 32, REG2; \ andcc REG1, REG2, %g0; \ be,pt %xcc, 700f; \ - sethi %hi(0x1ffc0000), REG2; \ + sethi %hi(0xffe00000), REG2; \ sllx REG2, 1, REG2; \ brgez,pn REG1, FAIL_LABEL; \ andn REG1, REG2, REG1; \ -- 2.13.6 Patches currently in stable-queue which might be from nitin.m.gupta(a)oracle.com are queue-4.14/0001-sparc64-Fix-page-table-walk-for-PUD-hugepages.patch

7 years, 5 months

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[Linux-stable-mirror] [PATCH for 4.4-stable] KVM: x86: fix singlestepping over syscall

by Paolo Bonzini

[ Upstream commit c8401dda2f0a00cd25c0af6a95ed50e478d25de4 ] TF is handled a bit differently for syscall and sysret, compared to the other instructions: TF is checked after the instruction completes, so that the OS can disable #DB at a syscall by adding TF to FMASK. When the sysret is executed the #DB is taken "as if" the syscall insn just completed. KVM emulates syscall so that it can trap 32-bit syscall on Intel processors. Fix the behavior, otherwise you could get #DB on a user stack which is not nice. This does not affect Linux guests, as they use an IST or task gate for #DB. This fixes CVE-2017-7518. Cc: stable(a)vger.kernel.org Reported-by: Andy Lutomirski <luto(a)kernel.org> Signed-off-by: Paolo Bonzini <pbonzini(a)redhat.com> Signed-off-by: Radim Krčmář <rkrcmar(a)redhat.com> Conflicts: arch/x86/kvm/x86.c --- arch/x86/include/asm/kvm_emulate.h | 1 + arch/x86/kvm/emulate.c | 1 + arch/x86/kvm/x86.c | 52 ++++++++++++++++---------------------- 3 files changed, 24 insertions(+), 30 deletions(-) diff --git a/arch/x86/include/asm/kvm_emulate.h b/arch/x86/include/asm/kvm_emulate.h index 19d14ac23ef9..fc3c7e49c8e4 100644 --- a/arch/x86/include/asm/kvm_emulate.h +++ b/arch/x86/include/asm/kvm_emulate.h @@ -296,6 +296,7 @@ struct x86_emulate_ctxt { bool perm_ok; /* do not check permissions if true */ bool ud; /* inject an #UD if host doesn't support insn */ + bool tf; /* TF value before instruction (after for syscall/sysret) */ bool have_exception; struct x86_exception exception; diff --git a/arch/x86/kvm/emulate.c b/arch/x86/kvm/emulate.c index 04b2f3cad7ba..684edebb4a0c 100644 --- a/arch/x86/kvm/emulate.c +++ b/arch/x86/kvm/emulate.c @@ -2726,6 +2726,7 @@ static int em_syscall(struct x86_emulate_ctxt *ctxt) ctxt->eflags &= ~(X86_EFLAGS_VM | X86_EFLAGS_IF); } + ctxt->tf = (ctxt->eflags & X86_EFLAGS_TF) != 0; return X86EMUL_CONTINUE; } diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index 8e526c6fd784..3ffd5900da5b 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -5095,6 +5095,8 @@ static void init_emulate_ctxt(struct kvm_vcpu *vcpu) kvm_x86_ops->get_cs_db_l_bits(vcpu, &cs_db, &cs_l); ctxt->eflags = kvm_get_rflags(vcpu); + ctxt->tf = (ctxt->eflags & X86_EFLAGS_TF) != 0; + ctxt->eip = kvm_rip_read(vcpu); ctxt->mode = (!is_protmode(vcpu)) ? X86EMUL_MODE_REAL : (ctxt->eflags & X86_EFLAGS_VM) ? X86EMUL_MODE_VM86 : @@ -5315,37 +5317,26 @@ static int kvm_vcpu_check_hw_bp(unsigned long addr, u32 type, u32 dr7, return dr6; } -static void kvm_vcpu_check_singlestep(struct kvm_vcpu *vcpu, unsigned long rflags, int *r) +static void kvm_vcpu_do_singlestep(struct kvm_vcpu *vcpu, int *r) { struct kvm_run *kvm_run = vcpu->run; - /* - * rflags is the old, "raw" value of the flags. The new value has - * not been saved yet. - * - * This is correct even for TF set by the guest, because "the - * processor will not generate this exception after the instruction - * that sets the TF flag". - */ - if (unlikely(rflags & X86_EFLAGS_TF)) { - if (vcpu->guest_debug & KVM_GUESTDBG_SINGLESTEP) { - kvm_run->debug.arch.dr6 = DR6_BS | DR6_FIXED_1 | - DR6_RTM; - kvm_run->debug.arch.pc = vcpu->arch.singlestep_rip; - kvm_run->debug.arch.exception = DB_VECTOR; - kvm_run->exit_reason = KVM_EXIT_DEBUG; - *r = EMULATE_USER_EXIT; - } else { - vcpu->arch.emulate_ctxt.eflags &= ~X86_EFLAGS_TF; - /* - * "Certain debug exceptions may clear bit 0-3. The - * remaining contents of the DR6 register are never - * cleared by the processor". - */ - vcpu->arch.dr6 &= ~15; - vcpu->arch.dr6 |= DR6_BS | DR6_RTM; - kvm_queue_exception(vcpu, DB_VECTOR); - } + if (vcpu->guest_debug & KVM_GUESTDBG_SINGLESTEP) { + kvm_run->debug.arch.dr6 = DR6_BS | DR6_FIXED_1 | DR6_RTM; + kvm_run->debug.arch.pc = vcpu->arch.singlestep_rip; + kvm_run->debug.arch.exception = DB_VECTOR; + kvm_run->exit_reason = KVM_EXIT_DEBUG; + *r = EMULATE_USER_EXIT; + } else { + vcpu->arch.emulate_ctxt.eflags &= ~X86_EFLAGS_TF; + /* + * "Certain debug exceptions may clear bit 0-3. The + * remaining contents of the DR6 register are never + * cleared by the processor". + */ + vcpu->arch.dr6 &= ~15; + vcpu->arch.dr6 |= DR6_BS | DR6_RTM; + kvm_queue_exception(vcpu, DB_VECTOR); } } @@ -5500,8 +5491,9 @@ int x86_emulate_instruction(struct kvm_vcpu *vcpu, toggle_interruptibility(vcpu, ctxt->interruptibility); vcpu->arch.emulate_regs_need_sync_to_vcpu = false; kvm_rip_write(vcpu, ctxt->eip); - if (r == EMULATE_DONE) - kvm_vcpu_check_singlestep(vcpu, rflags, &r); + if (r == EMULATE_DONE && + (ctxt->tf || (vcpu->guest_debug & KVM_GUESTDBG_SINGLESTEP))) + kvm_vcpu_do_singlestep(vcpu, &r); if (!ctxt->have_exception || exception_type(ctxt->exception.vector) == EXCPT_TRAP) __kvm_set_rflags(vcpu, ctxt->eflags); -- 1.8.3.1

7 years, 5 months

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[Linux-stable-mirror] [PATCH] wcn36xx: fix iris child-node lookup

by Johan Hovold

Fix child-node lookup during probe, which ended up searching the whole device tree depth-first starting at the parent rather than just matching on its children. To make things worse, the parent mmio node was also prematurely freed. Fixes: fd52bdae9ab0 ("wcn36xx: Disable 5GHz for wcn3620") Cc: stable <stable(a)vger.kernel.org> # 4.14 Cc: Loic Poulain <loic.poulain(a)linaro.org> Signed-off-by: Johan Hovold <johan(a)kernel.org> --- drivers/net/wireless/ath/wcn36xx/main.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/wireless/ath/wcn36xx/main.c b/drivers/net/wireless/ath/wcn36xx/main.c index 71812a2dd513..f7d228b5ba93 100644 --- a/drivers/net/wireless/ath/wcn36xx/main.c +++ b/drivers/net/wireless/ath/wcn36xx/main.c @@ -1233,7 +1233,7 @@ static int wcn36xx_platform_get_resources(struct wcn36xx *wcn, } /* External RF module */ - iris_node = of_find_node_by_name(mmio_node, "iris"); + iris_node = of_get_child_by_name(mmio_node, "iris"); if (iris_node) { if (of_device_is_compatible(iris_node, "qcom,wcn3620")) wcn->rf_id = RF_IRIS_WCN3620; -- 2.15.0

7 years, 5 months

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Re: [Linux-stable-mirror] Linux 3.10.108 (EOL)

by Sebastian Gottschall

Am 05.11.2017 um 08:46 schrieb Willy Tarreau: > On Sun, Nov 05, 2017 at 06:59:48AM +0000, Harsh Shandilya wrote: >> Is this not pushed yet? I only see 3.10.107 > Now it is there. Please avoid to rely on it for too long and quickly > upgrade to 4.4 or any other maintained version that suits your needs. > > Willy > even if EOL has to come once for sure, its the last kernel which can be used on certain devices (embedded) since the kernel is growing bigger and bigger and wont run good anymore with limited resource Sebastian -- Mit freundlichen Grüssen / Regards Sebastian Gottschall / CTO NewMedia-NET GmbH - DD-WRT Firmensitz: Stubenwaldallee 21a, 64625 Bensheim Registergericht: Amtsgericht Darmstadt, HRB 25473 Geschäftsführer: Peter Steinhäuser, Christian Scheele http://www.dd-wrt.com email: s.gottschall(a)dd-wrt.com Tel.: +496251-582650 / Fax: +496251-5826565

7 years, 5 months

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[Linux-stable-mirror] Patch "sparc64: mmu_context: Add missing include files" has been added to the 4.14-stable tree

by gregkh＠linuxfoundation.org

This is a note to let you know that I've just added the patch titled sparc64: mmu_context: Add missing include files to the 4.14-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=sum… The filename of the patch is: sparc64-mmu_context-add-missing-include-files.patch and it can be found in the queue-4.14 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable(a)vger.kernel.org> know about it. >From 01c3f0a42a2a0ff0c3fed80a1a25f2641ae72554 Mon Sep 17 00:00:00 2001 From: Guenter Roeck <linux(a)roeck-us.net> Date: Sun, 10 Sep 2017 13:44:47 -0700 Subject: sparc64: mmu_context: Add missing include files From: Guenter Roeck <linux(a)roeck-us.net> commit 01c3f0a42a2a0ff0c3fed80a1a25f2641ae72554 upstream. Fix the following build errors. In file included from arch/sparc/include/asm/mmu_context.h:4:0, from include/linux/mmu_context.h:4, from drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.h:29, from drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.c:23: arch/sparc/include/asm/mmu_context_64.h:22:37: error: unknown type name 'per_cpu_secondary_mm' arch/sparc/include/asm/mmu_context_64.h: In function 'switch_mm': arch/sparc/include/asm/mmu_context_64.h:79:2: error: implicit declaration of function 'smp_processor_id' Fixes: 70539bd79500 ("drm/amd: Update MEC HQD loading code for KFD") Signed-off-by: Guenter Roeck <linux(a)roeck-us.net> Acked-by: Oded Gabbay <oded.gabbay(a)gmail.com> Signed-off-by: David S. Miller <davem(a)davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> --- arch/sparc/include/asm/mmu_context_64.h | 2 ++ 1 file changed, 2 insertions(+) --- a/arch/sparc/include/asm/mmu_context_64.h +++ b/arch/sparc/include/asm/mmu_context_64.h @@ -8,9 +8,11 @@ #include <linux/spinlock.h> #include <linux/mm_types.h> +#include <linux/smp.h> #include <asm/spitfire.h> #include <asm-generic/mm_hooks.h> +#include <asm/percpu.h> static inline void enter_lazy_tlb(struct mm_struct *mm, struct task_struct *tsk) { Patches currently in stable-queue which might be from linux(a)roeck-us.net are queue-4.14/sparc64-mmu_context-add-missing-include-files.patch queue-4.14/sparc32-add-cmpxchg64.patch

7 years, 5 months

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[Linux-stable-mirror] Patch "sparc32: Add cmpxchg64()." has been added to the 4.14-stable tree

by gregkh＠linuxfoundation.org

This is a note to let you know that I've just added the patch titled sparc32: Add cmpxchg64(). to the 4.14-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=sum… The filename of the patch is: sparc32-add-cmpxchg64.patch and it can be found in the queue-4.14 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable(a)vger.kernel.org> know about it. >From 23198ddffb6cddb5d5824230af4dd4b46e4046a4 Mon Sep 17 00:00:00 2001 From: "David S. Miller" <davem(a)davemloft.net> Date: Wed, 27 Sep 2017 22:38:19 -0700 Subject: sparc32: Add cmpxchg64(). From: David S. Miller <davem(a)davemloft.net> commit 23198ddffb6cddb5d5824230af4dd4b46e4046a4 upstream. This fixes the build with i40e driver enabled. Reported-by: Guenter Roeck <linux(a)roeck-us.net> Signed-off-by: David S. Miller <davem(a)davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> --- arch/sparc/include/asm/cmpxchg_32.h | 3 +++ arch/sparc/lib/atomic32.c | 14 ++++++++++++++ 2 files changed, 17 insertions(+) --- a/arch/sparc/include/asm/cmpxchg_32.h +++ b/arch/sparc/include/asm/cmpxchg_32.h @@ -63,6 +63,9 @@ __cmpxchg(volatile void *ptr, unsigned l (unsigned long)_n_, sizeof(*(ptr))); \ }) +u64 __cmpxchg_u64(u64 *ptr, u64 old, u64 new); +#define cmpxchg64(ptr, old, new) __cmpxchg_u64(ptr, old, new) + #include <asm-generic/cmpxchg-local.h> /* --- a/arch/sparc/lib/atomic32.c +++ b/arch/sparc/lib/atomic32.c @@ -173,6 +173,20 @@ unsigned long __cmpxchg_u32(volatile u32 } EXPORT_SYMBOL(__cmpxchg_u32); +u64 __cmpxchg_u64(u64 *ptr, u64 old, u64 new) +{ + unsigned long flags; + u64 prev; + + spin_lock_irqsave(ATOMIC_HASH(ptr), flags); + if ((prev = *ptr) == old) + *ptr = new; + spin_unlock_irqrestore(ATOMIC_HASH(ptr), flags); + + return prev; +} +EXPORT_SYMBOL(__cmpxchg_u64); + unsigned long __xchg_u32(volatile u32 *ptr, u32 new) { unsigned long flags; Patches currently in stable-queue which might be from davem(a)davemloft.net are queue-4.14/sparc64-mmu_context-add-missing-include-files.patch queue-4.14/sparc32-add-cmpxchg64.patch

7 years, 5 months

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Re: [Linux-stable-mirror] [PATCH] net: mvneta: fix handling of the Tx descriptor counter

by David Laight

From: Simon Guinot > Sent: 13 November 2017 15:36 > To: David Miller > Cc: thomas.petazzoni(a)free-electrons.com; netdev(a)vger.kernel.org; musv(a)gmx.de; > andreas.tobler(a)cloudguard.ch; gregory.clement(a)free-electrons.com; antoine.tenart(a)free-electrons.com; > mw(a)semihalf.com; stable(a)vger.kernel.org > Subject: Re: [PATCH] net: mvneta: fix handling of the Tx descriptor counter > > On Mon, Nov 13, 2017 at 11:54:14PM +0900, David Miller wrote: > > From: Simon Guinot <simon.guinot(a)sequanux.org> > > Date: Mon, 13 Nov 2017 15:51:15 +0100 > > > > > IIUC the driver stops the queue if a threshold of 316 Tx descriptors is > > > reached (default and worst value). > > > > That's a lot of latency. > > OK, then I'll keep the "tx_pending > 255" flushing condition. But note > there is no other software mechanism to limit the Tx latency inside the > mvneta driver. Should we add something ? And is that not rather the job > of the network stack to keep track of the latency and to limit the txq > size ? This is 'first packet transmit latency'. If the 'doorbell write' is just a PCIe write then, on most systems, that is cheap and pipelined/posted. I'd almost be surprised if you see any 'improvement' from not doing it every packet. The overall tx queue size is a different issue - usually needs limiting by BQL if TSO is done. David

7 years, 5 months

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[Linux-stable-mirror] Fwd: stable-rc/linux-4.4.y build: 182 builds: 60 failed, 122 passed, 60 errors, 60 warnings (v4.4.99-60-g803704b287d8)

by Arnd Bergmann

[Adding the others to cc] ---------- Forwarded message ---------- From: Arnd Bergmann <arnd(a)arndb.de> Date: Sun, Nov 19, 2017 at 9:53 PM Subject: Re: stable-rc/linux-4.4.y build: 182 builds: 60 failed, 122 passed, 60 errors, 60 warnings (v4.4.99-60-g803704b287d8) To: "kernelci.org bot" <bot(a)kernelci.org>, gregkh <gregkh(a)linuxfoundation.org> Cc: Tom Gall <tom.gall(a)linaro.org>, Sumit Semwal <sumit.semwal(a)linaro.org>, Amit Pundir <amit.pundir(a)linaro.org>, Arnd Bergmann <arnd.bergmann(a)linaro.org>, Anmar Oueja <anmar.oueja(a)linaro.org> On Sun, Nov 19, 2017 at 5:35 PM, kernelci.org bot <bot(a)kernelci.org> wrote: > stable-rc/linux-4.4.y build: 182 builds: 60 failed, 122 passed, 60 errors, 60 warnings (v4.4.99-60-g803704b287d8) > > Full Build Summary: https://kernelci.org/build/stable-rc/branch/linux-4.4.y/kernel/v4.4.99-60-g… > > Tree: stable-rc > Branch: linux-4.4.y > Git Describe: v4.4.99-60-g803704b287d8 > Git Commit: 803704b287d89efcd70fade9e650176282a1d766 > Git URL: http://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git > Built: 4 unique architectures > > Build Failures Detected: > > mips: gcc version 6.3.0 (GCC) > > allnoconfig: FAIL > ar7_defconfig: FAIL > ath79_defconfig: FAIL > bcm47xx_defconfig: FAIL > ... > > Errors summary: > > 60 arch/mips/kernel/setup.c:439:8: error: implicit declaration of function 'PHYS_PFN' [-Werror=implicit-function-declaration] All mips builds failed with this error, apparently caused by the backport of d9b5b658210f2 ("MIPS: init: Ensure bootmem does not corrupt reserved memory"). Arnd

7 years, 5 months

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[Linux-stable-mirror] Patch "mm: add PHYS_PFN, use it in __phys_to_pfn()" has been added to the 4.4-stable tree

by gregkh＠linuxfoundation.org

This is a note to let you know that I've just added the patch titled mm: add PHYS_PFN, use it in __phys_to_pfn() to the 4.4-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=sum… The filename of the patch is: mm-add-phys_pfn-use-it-in-__phys_to_pfn.patch and it can be found in the queue-4.4 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable(a)vger.kernel.org> know about it. >From 8f235d1a3eb7198affe7cadf676a10afb8a46a1a Mon Sep 17 00:00:00 2001 From: Chen Gang <xili_gchen_5257(a)hotmail.com> Date: Thu, 14 Jan 2016 15:18:33 -0800 Subject: mm: add PHYS_PFN, use it in __phys_to_pfn() From: Chen Gang <xili_gchen_5257(a)hotmail.com> commit 8f235d1a3eb7198affe7cadf676a10afb8a46a1a upstream. __phys_to_pfn and __pfn_to_phys are symmetric, PHYS_PFN and PFN_PHYS are semmetric: - y = (phys_addr_t)x << PAGE_SHIFT - y >> PAGE_SHIFT = (phys_add_t)x - (unsigned long)(y >> PAGE_SHIFT) = x [akpm(a)linux-foundation.org: use macro arg name `x'] [arnd(a)arndb.de: include linux/pfn.h for PHYS_PFN definition] Signed-off-by: Chen Gang <gang.chen.5i5j(a)gmail.com> Cc: Oleg Nesterov <oleg(a)redhat.com> Signed-off-by: Arnd Bergmann <arnd(a)arndb.de> Signed-off-by: Andrew Morton <akpm(a)linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds(a)linux-foundation.org> Cc: Marcin Nowakowski <marcin.nowakowski(a)mips.com> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> --- include/asm-generic/memory_model.h | 4 +++- include/linux/pfn.h | 1 + 2 files changed, 4 insertions(+), 1 deletion(-) --- a/include/asm-generic/memory_model.h +++ b/include/asm-generic/memory_model.h @@ -1,6 +1,8 @@ #ifndef __ASM_MEMORY_MODEL_H #define __ASM_MEMORY_MODEL_H +#include <linux/pfn.h> + #ifndef __ASSEMBLY__ #if defined(CONFIG_FLATMEM) @@ -72,7 +74,7 @@ /* * Convert a physical address to a Page Frame Number and back */ -#define __phys_to_pfn(paddr) ((unsigned long)((paddr) >> PAGE_SHIFT)) +#define __phys_to_pfn(paddr) PHYS_PFN(paddr) #define __pfn_to_phys(pfn) PFN_PHYS(pfn) #define page_to_pfn __page_to_pfn --- a/include/linux/pfn.h +++ b/include/linux/pfn.h @@ -9,5 +9,6 @@ #define PFN_UP(x) (((x) + PAGE_SIZE-1) >> PAGE_SHIFT) #define PFN_DOWN(x) ((x) >> PAGE_SHIFT) #define PFN_PHYS(x) ((phys_addr_t)(x) << PAGE_SHIFT) +#define PHYS_PFN(x) ((unsigned long)((x) >> PAGE_SHIFT)) #endif Patches currently in stable-queue which might be from xili_gchen_5257(a)hotmail.com are queue-4.4/mm-add-phys_pfn-use-it-in-__phys_to_pfn.patch

7 years, 5 months

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