mirror of
https://github.com/torvalds/linux
synced 2024-09-06 18:01:05 +00:00
Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 fixes from Thomas Gleixner: "This contains the following fixes and improvements: - Avoid dereferencing an unprotected VMA pointer in the fault signal generation code - Fix inline asm call constraints for GCC 4.4 - Use existing register variable to retrieve the stack pointer instead of forcing the compiler to create another indirect access which results in excessive extra 'mov %rsp, %<dst>' instructions - Disable branch profiling for the memory encryption code to prevent an early boot crash - Fix a sparse warning caused by casting the __user annotation in __get_user_asm_u64() away - Fix an off by one error in the loop termination of the error patch in the x86 sysfs init code - Add missing CPU IDs to various Intel specific drivers to enable the functionality on recent hardware - More (init) constification in the numachip code" * 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/asm: Use register variable to get stack pointer value x86/mm: Disable branch profiling in mem_encrypt.c x86/asm: Fix inline asm call constraints for GCC 4.4 perf/x86/intel/uncore: Correct num_boxes for IIO and IRP perf/x86/intel/rapl: Add missing CPU IDs perf/x86/msr: Add missing CPU IDs perf/x86/intel/cstate: Add missing CPU IDs x86: Don't cast away the __user in __get_user_asm_u64() x86/sysfs: Fix off-by-one error in loop termination x86/mm: Fix fault error path using unsafe vma pointer x86/numachip: Add const and __initconst to numachip2_clockevent
This commit is contained in:
commit
368f89984b
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@ -552,6 +552,7 @@ static const struct x86_cpu_id intel_cstates_match[] __initconst = {
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X86_CSTATES_MODEL(INTEL_FAM6_SKYLAKE_MOBILE, snb_cstates),
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X86_CSTATES_MODEL(INTEL_FAM6_SKYLAKE_DESKTOP, snb_cstates),
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X86_CSTATES_MODEL(INTEL_FAM6_SKYLAKE_X, snb_cstates),
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X86_CSTATES_MODEL(INTEL_FAM6_KABYLAKE_MOBILE, snb_cstates),
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X86_CSTATES_MODEL(INTEL_FAM6_KABYLAKE_DESKTOP, snb_cstates),
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@ -560,6 +561,9 @@ static const struct x86_cpu_id intel_cstates_match[] __initconst = {
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X86_CSTATES_MODEL(INTEL_FAM6_XEON_PHI_KNM, knl_cstates),
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X86_CSTATES_MODEL(INTEL_FAM6_ATOM_GOLDMONT, glm_cstates),
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X86_CSTATES_MODEL(INTEL_FAM6_ATOM_DENVERTON, glm_cstates),
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X86_CSTATES_MODEL(INTEL_FAM6_ATOM_GEMINI_LAKE, glm_cstates),
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{ },
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};
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MODULE_DEVICE_TABLE(x86cpu, intel_cstates_match);
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@ -775,6 +775,9 @@ static const struct x86_cpu_id rapl_cpu_match[] __initconst = {
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X86_RAPL_MODEL_MATCH(INTEL_FAM6_KABYLAKE_DESKTOP, skl_rapl_init),
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X86_RAPL_MODEL_MATCH(INTEL_FAM6_ATOM_GOLDMONT, hsw_rapl_init),
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X86_RAPL_MODEL_MATCH(INTEL_FAM6_ATOM_DENVERTON, hsw_rapl_init),
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X86_RAPL_MODEL_MATCH(INTEL_FAM6_ATOM_GEMINI_LAKE, hsw_rapl_init),
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{},
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};
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@ -3462,7 +3462,7 @@ static struct intel_uncore_ops skx_uncore_iio_ops = {
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static struct intel_uncore_type skx_uncore_iio = {
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.name = "iio",
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.num_counters = 4,
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.num_boxes = 5,
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.num_boxes = 6,
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.perf_ctr_bits = 48,
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.event_ctl = SKX_IIO0_MSR_PMON_CTL0,
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.perf_ctr = SKX_IIO0_MSR_PMON_CTR0,
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@ -3492,7 +3492,7 @@ static const struct attribute_group skx_uncore_format_group = {
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static struct intel_uncore_type skx_uncore_irp = {
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.name = "irp",
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.num_counters = 2,
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.num_boxes = 5,
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.num_boxes = 6,
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.perf_ctr_bits = 48,
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.event_ctl = SKX_IRP0_MSR_PMON_CTL0,
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.perf_ctr = SKX_IRP0_MSR_PMON_CTR0,
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@ -63,6 +63,14 @@ static bool test_intel(int idx)
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case INTEL_FAM6_ATOM_SILVERMONT1:
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case INTEL_FAM6_ATOM_SILVERMONT2:
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case INTEL_FAM6_ATOM_AIRMONT:
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case INTEL_FAM6_ATOM_GOLDMONT:
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case INTEL_FAM6_ATOM_DENVERTON:
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case INTEL_FAM6_ATOM_GEMINI_LAKE:
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case INTEL_FAM6_XEON_PHI_KNL:
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case INTEL_FAM6_XEON_PHI_KNM:
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if (idx == PERF_MSR_SMI)
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return true;
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break;
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@ -11,10 +11,12 @@
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# define __ASM_FORM_COMMA(x) " " #x ","
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#endif
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#ifdef CONFIG_X86_32
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#ifndef __x86_64__
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/* 32 bit */
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# define __ASM_SEL(a,b) __ASM_FORM(a)
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# define __ASM_SEL_RAW(a,b) __ASM_FORM_RAW(a)
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#else
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/* 64 bit */
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# define __ASM_SEL(a,b) __ASM_FORM(b)
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# define __ASM_SEL_RAW(a,b) __ASM_FORM_RAW(b)
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#endif
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@ -139,8 +141,8 @@
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* gets set up by the containing function. If you forget to do this, objtool
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* may print a "call without frame pointer save/setup" warning.
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*/
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register unsigned int __asm_call_sp asm("esp");
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#define ASM_CALL_CONSTRAINT "+r" (__asm_call_sp)
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register unsigned long current_stack_pointer asm(_ASM_SP);
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#define ASM_CALL_CONSTRAINT "+r" (current_stack_pointer)
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#endif
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#endif /* _ASM_X86_ASM_H */
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@ -158,17 +158,6 @@ struct thread_info {
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*/
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#ifndef __ASSEMBLY__
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static inline unsigned long current_stack_pointer(void)
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{
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unsigned long sp;
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#ifdef CONFIG_X86_64
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asm("mov %%rsp,%0" : "=g" (sp));
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#else
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asm("mov %%esp,%0" : "=g" (sp));
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#endif
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return sp;
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}
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/*
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* Walks up the stack frames to make sure that the specified object is
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* entirely contained by a single stack frame.
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@ -337,7 +337,7 @@ do { \
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_ASM_EXTABLE(1b, 4b) \
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_ASM_EXTABLE(2b, 4b) \
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: "=r" (retval), "=&A"(x) \
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: "m" (__m(__ptr)), "m" __m(((u32 *)(__ptr)) + 1), \
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: "m" (__m(__ptr)), "m" __m(((u32 __user *)(__ptr)) + 1), \
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"i" (errret), "0" (retval)); \
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})
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@ -64,7 +64,7 @@ static void call_on_stack(void *func, void *stack)
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static inline void *current_stack(void)
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{
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return (void *)(current_stack_pointer() & ~(THREAD_SIZE - 1));
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return (void *)(current_stack_pointer & ~(THREAD_SIZE - 1));
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}
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static inline int execute_on_irq_stack(int overflow, struct irq_desc *desc)
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@ -88,7 +88,7 @@ static inline int execute_on_irq_stack(int overflow, struct irq_desc *desc)
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/* Save the next esp at the bottom of the stack */
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prev_esp = (u32 *)irqstk;
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*prev_esp = current_stack_pointer();
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*prev_esp = current_stack_pointer;
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if (unlikely(overflow))
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call_on_stack(print_stack_overflow, isp);
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@ -139,7 +139,7 @@ void do_softirq_own_stack(void)
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/* Push the previous esp onto the stack */
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prev_esp = (u32 *)irqstk;
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*prev_esp = current_stack_pointer();
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*prev_esp = current_stack_pointer;
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call_on_stack(__do_softirq, isp);
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}
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@ -299,7 +299,7 @@ static int __init create_setup_data_nodes(struct kobject *parent)
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return 0;
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out_clean_nodes:
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for (j = i - 1; j > 0; j--)
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for (j = i - 1; j >= 0; j--)
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cleanup_setup_data_node(*(kobjp + j));
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kfree(kobjp);
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out_setup_data_kobj:
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@ -142,7 +142,7 @@ void ist_begin_non_atomic(struct pt_regs *regs)
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* from double_fault.
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*/
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BUG_ON((unsigned long)(current_top_of_stack() -
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current_stack_pointer()) >= THREAD_SIZE);
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current_stack_pointer) >= THREAD_SIZE);
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preempt_enable_no_resched();
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}
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@ -192,8 +192,7 @@ is_prefetch(struct pt_regs *regs, unsigned long error_code, unsigned long addr)
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* 6. T1 : reaches here, sees vma_pkey(vma)=5, when we really
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* faulted on a pte with its pkey=4.
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*/
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static void fill_sig_info_pkey(int si_code, siginfo_t *info,
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struct vm_area_struct *vma)
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static void fill_sig_info_pkey(int si_code, siginfo_t *info, u32 *pkey)
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{
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/* This is effectively an #ifdef */
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if (!boot_cpu_has(X86_FEATURE_OSPKE))
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* valid VMA, so we should never reach this without a
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* valid VMA.
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*/
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if (!vma) {
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if (!pkey) {
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WARN_ONCE(1, "PKU fault with no VMA passed in");
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info->si_pkey = 0;
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return;
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* absolutely guranteed to be 100% accurate because of
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* the race explained above.
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*/
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info->si_pkey = vma_pkey(vma);
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info->si_pkey = *pkey;
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}
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static void
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force_sig_info_fault(int si_signo, int si_code, unsigned long address,
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struct task_struct *tsk, struct vm_area_struct *vma,
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int fault)
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struct task_struct *tsk, u32 *pkey, int fault)
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{
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unsigned lsb = 0;
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siginfo_t info;
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lsb = PAGE_SHIFT;
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info.si_addr_lsb = lsb;
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fill_sig_info_pkey(si_code, &info, vma);
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fill_sig_info_pkey(si_code, &info, pkey);
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force_sig_info(si_signo, &info, tsk);
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}
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@ -762,8 +760,6 @@ no_context(struct pt_regs *regs, unsigned long error_code,
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struct task_struct *tsk = current;
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unsigned long flags;
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int sig;
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/* No context means no VMA to pass down */
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struct vm_area_struct *vma = NULL;
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/* Are we prepared to handle this kernel fault? */
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if (fixup_exception(regs, X86_TRAP_PF)) {
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@ -788,7 +784,7 @@ no_context(struct pt_regs *regs, unsigned long error_code,
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/* XXX: hwpoison faults will set the wrong code. */
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force_sig_info_fault(signal, si_code, address,
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tsk, vma, 0);
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tsk, NULL, 0);
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}
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/*
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@ -896,8 +892,7 @@ show_signal_msg(struct pt_regs *regs, unsigned long error_code,
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static void
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__bad_area_nosemaphore(struct pt_regs *regs, unsigned long error_code,
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unsigned long address, struct vm_area_struct *vma,
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int si_code)
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unsigned long address, u32 *pkey, int si_code)
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{
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struct task_struct *tsk = current;
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@ -945,7 +940,7 @@ __bad_area_nosemaphore(struct pt_regs *regs, unsigned long error_code,
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tsk->thread.error_code = error_code;
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tsk->thread.trap_nr = X86_TRAP_PF;
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force_sig_info_fault(SIGSEGV, si_code, address, tsk, vma, 0);
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force_sig_info_fault(SIGSEGV, si_code, address, tsk, pkey, 0);
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return;
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}
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@ -958,9 +953,9 @@ __bad_area_nosemaphore(struct pt_regs *regs, unsigned long error_code,
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static noinline void
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bad_area_nosemaphore(struct pt_regs *regs, unsigned long error_code,
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unsigned long address, struct vm_area_struct *vma)
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unsigned long address, u32 *pkey)
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{
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__bad_area_nosemaphore(regs, error_code, address, vma, SEGV_MAPERR);
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__bad_area_nosemaphore(regs, error_code, address, pkey, SEGV_MAPERR);
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}
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static void
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@ -968,6 +963,10 @@ __bad_area(struct pt_regs *regs, unsigned long error_code,
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unsigned long address, struct vm_area_struct *vma, int si_code)
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{
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struct mm_struct *mm = current->mm;
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u32 pkey;
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if (vma)
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pkey = vma_pkey(vma);
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/*
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* Something tried to access memory that isn't in our memory map..
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@ -975,7 +974,8 @@ __bad_area(struct pt_regs *regs, unsigned long error_code,
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*/
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up_read(&mm->mmap_sem);
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__bad_area_nosemaphore(regs, error_code, address, vma, si_code);
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__bad_area_nosemaphore(regs, error_code, address,
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(vma) ? &pkey : NULL, si_code);
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}
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static noinline void
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@ -1018,7 +1018,7 @@ bad_area_access_error(struct pt_regs *regs, unsigned long error_code,
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static void
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do_sigbus(struct pt_regs *regs, unsigned long error_code, unsigned long address,
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struct vm_area_struct *vma, unsigned int fault)
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u32 *pkey, unsigned int fault)
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{
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struct task_struct *tsk = current;
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int code = BUS_ADRERR;
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@ -1045,13 +1045,12 @@ do_sigbus(struct pt_regs *regs, unsigned long error_code, unsigned long address,
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code = BUS_MCEERR_AR;
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}
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#endif
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force_sig_info_fault(SIGBUS, code, address, tsk, vma, fault);
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force_sig_info_fault(SIGBUS, code, address, tsk, pkey, fault);
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}
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static noinline void
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mm_fault_error(struct pt_regs *regs, unsigned long error_code,
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unsigned long address, struct vm_area_struct *vma,
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unsigned int fault)
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unsigned long address, u32 *pkey, unsigned int fault)
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{
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if (fatal_signal_pending(current) && !(error_code & PF_USER)) {
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no_context(regs, error_code, address, 0, 0);
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@ -1075,9 +1074,9 @@ mm_fault_error(struct pt_regs *regs, unsigned long error_code,
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} else {
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if (fault & (VM_FAULT_SIGBUS|VM_FAULT_HWPOISON|
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VM_FAULT_HWPOISON_LARGE))
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do_sigbus(regs, error_code, address, vma, fault);
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do_sigbus(regs, error_code, address, pkey, fault);
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else if (fault & VM_FAULT_SIGSEGV)
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bad_area_nosemaphore(regs, error_code, address, vma);
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bad_area_nosemaphore(regs, error_code, address, pkey);
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else
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BUG();
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}
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@ -1267,6 +1266,7 @@ __do_page_fault(struct pt_regs *regs, unsigned long error_code,
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struct mm_struct *mm;
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int fault, major = 0;
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unsigned int flags = FAULT_FLAG_ALLOW_RETRY | FAULT_FLAG_KILLABLE;
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u32 pkey;
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tsk = current;
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mm = tsk->mm;
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@ -1467,9 +1467,10 @@ __do_page_fault(struct pt_regs *regs, unsigned long error_code,
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return;
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}
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pkey = vma_pkey(vma);
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up_read(&mm->mmap_sem);
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if (unlikely(fault & VM_FAULT_ERROR)) {
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mm_fault_error(regs, error_code, address, vma, fault);
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mm_fault_error(regs, error_code, address, &pkey, fault);
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return;
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}
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|
|
|
@ -10,6 +10,8 @@
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* published by the Free Software Foundation.
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*/
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#define DISABLE_BRANCH_PROFILING
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#include <linux/linkage.h>
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#include <linux/init.h>
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#include <linux/mm.h>
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|
|
|
@ -191,7 +191,7 @@ void switch_mm_irqs_off(struct mm_struct *prev, struct mm_struct *next,
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* mapped in the new pgd, we'll double-fault. Forcibly
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* map it.
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*/
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unsigned int index = pgd_index(current_stack_pointer());
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unsigned int index = pgd_index(current_stack_pointer);
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pgd_t *pgd = next->pgd + index;
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if (unlikely(pgd_none(*pgd)))
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|
|
|
@ -43,7 +43,7 @@ static int numachip2_set_next_event(unsigned long delta, struct clock_event_devi
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return 0;
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}
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static struct clock_event_device numachip2_clockevent = {
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static const struct clock_event_device numachip2_clockevent __initconst = {
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.name = "numachip2",
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.rating = 400,
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.set_next_event = numachip2_set_next_event,
|
||||
|
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