Commit-ID: 758a2e312228410f2f5092ade558109e93dc3ee8 Gitweb: https://git.kernel.org/tip/758a2e312228410f2f5092ade558109e93dc3ee8 Author: Thomas Gleixner <[email protected]> AuthorDate: Sun, 14 Apr 2019 18:00:02 +0200 Committer: Borislav Petkov <[email protected]> CommitDate: Wed, 17 Apr 2019 15:27:10 +0200
x86/irq/64: Rename irq_stack_ptr to hardirq_stack_ptr Preparatory patch to share code with 32bit. No functional changes. Signed-off-by: Thomas Gleixner <[email protected]> Signed-off-by: Borislav Petkov <[email protected]> Cc: Alexey Dobriyan <[email protected]> Cc: Andrew Morton <[email protected]> Cc: Andy Lutomirski <[email protected]> Cc: "Chang S. Bae" <[email protected]> Cc: Dominik Brodowski <[email protected]> Cc: "H. Peter Anvin" <[email protected]> Cc: Ingo Molnar <[email protected]> Cc: Jiri Kosina <[email protected]> Cc: Josh Poimboeuf <[email protected]> Cc: Konrad Rzeszutek Wilk <[email protected]> Cc: Michal Hocko <[email protected]> Cc: Mike Rapoport <[email protected]> Cc: Nick Desaulniers <[email protected]> Cc: Nicolai Stange <[email protected]> Cc: Peter Zijlstra <[email protected]> Cc: Pingfan Liu <[email protected]> Cc: Sean Christopherson <[email protected]> Cc: Stephen Rothwell <[email protected]> Cc: Vlastimil Babka <[email protected]> Cc: x86-ml <[email protected]> Link: https://lkml.kernel.org/r/[email protected] --- arch/x86/entry/entry_64.S | 2 +- arch/x86/include/asm/processor.h | 2 +- arch/x86/kernel/cpu/common.c | 2 +- arch/x86/kernel/dumpstack_64.c | 2 +- arch/x86/kernel/irq_64.c | 2 +- arch/x86/kernel/setup_percpu.c | 2 +- 6 files changed, 6 insertions(+), 6 deletions(-) diff --git a/arch/x86/entry/entry_64.S b/arch/x86/entry/entry_64.S index ee649f1f279e..726abbe6c6d8 100644 --- a/arch/x86/entry/entry_64.S +++ b/arch/x86/entry/entry_64.S @@ -431,7 +431,7 @@ END(irq_entries_start) */ movq \old_rsp, PER_CPU_VAR(irq_stack_union + IRQ_STACK_SIZE - 8) - movq PER_CPU_VAR(irq_stack_ptr), %rsp + movq PER_CPU_VAR(hardirq_stack_ptr), %rsp #ifdef CONFIG_DEBUG_ENTRY /* diff --git a/arch/x86/include/asm/processor.h b/arch/x86/include/asm/processor.h index 0b7d866a1ad5..5e3dd4e2136d 100644 --- a/arch/x86/include/asm/processor.h +++ b/arch/x86/include/asm/processor.h @@ -396,7 +396,7 @@ static inline unsigned long cpu_kernelmode_gs_base(int cpu) return (unsigned long)per_cpu(irq_stack_union.gs_base, cpu); } -DECLARE_PER_CPU(char *, irq_stack_ptr); +DECLARE_PER_CPU(char *, hardirq_stack_ptr); DECLARE_PER_CPU(unsigned int, irq_count); extern asmlinkage void ignore_sysret(void); diff --git a/arch/x86/kernel/cpu/common.c b/arch/x86/kernel/cpu/common.c index 88cab45707a9..13ec72bb8f36 100644 --- a/arch/x86/kernel/cpu/common.c +++ b/arch/x86/kernel/cpu/common.c @@ -1510,7 +1510,7 @@ DEFINE_PER_CPU(struct task_struct *, current_task) ____cacheline_aligned = &init_task; EXPORT_PER_CPU_SYMBOL(current_task); -DEFINE_PER_CPU(char *, irq_stack_ptr) = +DEFINE_PER_CPU(char *, hardirq_stack_ptr) = init_per_cpu_var(irq_stack_union.irq_stack) + IRQ_STACK_SIZE; DEFINE_PER_CPU(unsigned int, irq_count) __visible = -1; diff --git a/arch/x86/kernel/dumpstack_64.c b/arch/x86/kernel/dumpstack_64.c index f356d3ea0c70..753b8cfe8b8a 100644 --- a/arch/x86/kernel/dumpstack_64.c +++ b/arch/x86/kernel/dumpstack_64.c @@ -120,7 +120,7 @@ static bool in_exception_stack(unsigned long *stack, struct stack_info *info) static bool in_irq_stack(unsigned long *stack, struct stack_info *info) { - unsigned long *end = (unsigned long *)this_cpu_read(irq_stack_ptr); + unsigned long *end = (unsigned long *)this_cpu_read(hardirq_stack_ptr); unsigned long *begin = end - (IRQ_STACK_SIZE / sizeof(long)); /* diff --git a/arch/x86/kernel/irq_64.c b/arch/x86/kernel/irq_64.c index 7eb6f8d11bfd..f0c7356c8969 100644 --- a/arch/x86/kernel/irq_64.c +++ b/arch/x86/kernel/irq_64.c @@ -56,7 +56,7 @@ static inline void stack_overflow_check(struct pt_regs *regs) regs->sp <= curbase + THREAD_SIZE) return; - irq_stack_top = (u64)__this_cpu_read(irq_stack_ptr); + irq_stack_top = (u64)__this_cpu_read(hardirq_stack_ptr); irq_stack_bottom = irq_stack_top - IRQ_STACK_SIZE + STACK_MARGIN; if (regs->sp >= irq_stack_bottom && regs->sp <= irq_stack_top) return; diff --git a/arch/x86/kernel/setup_percpu.c b/arch/x86/kernel/setup_percpu.c index 4bf46575568a..657343ecc2da 100644 --- a/arch/x86/kernel/setup_percpu.c +++ b/arch/x86/kernel/setup_percpu.c @@ -245,7 +245,7 @@ void __init setup_per_cpu_areas(void) early_per_cpu_map(x86_cpu_to_logical_apicid, cpu); #endif #ifdef CONFIG_X86_64 - per_cpu(irq_stack_ptr, cpu) = + per_cpu(hardirq_stack_ptr, cpu) = per_cpu(irq_stack_union.irq_stack, cpu) + IRQ_STACK_SIZE; #endif
