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| author | Thomas Gleixner <tglx@linutronix.de> | 2019-04-14 17:59:46 +0200 |
|---|---|---|
| committer | Borislav Petkov <bp@suse.de> | 2019-04-17 12:50:46 +0200 |
| commit | 881a463cf21dbf83aab2cf6c9a359f34f88c2491 (patch) | |
| tree | b873d69986b2b96a69f94326c6c6449439e531ee /arch/x86/mm | |
| parent | 8f34c5b5afce91d171bb0802631197484cb69b8b (diff) | |
| download | linux-881a463cf21dbf83aab2cf6c9a359f34f88c2491.tar.bz2 | |
x86/cpu_entry_area: Cleanup setup functions
No point in retrieving the entry area pointer over and over. Do it once
and use unsigned int for 'cpu' everywhere.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Borislav Petkov <bp@suse.de>
Reviewed-by: Sean Christopherson <sean.j.christopherson@intel.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: x86-ml <x86@kernel.org>
Link: https://lkml.kernel.org/r/20190414160144.419653165@linutronix.de
Diffstat (limited to 'arch/x86/mm')
| -rw-r--r-- | arch/x86/mm/cpu_entry_area.c | 19 |
1 files changed, 9 insertions, 10 deletions
diff --git a/arch/x86/mm/cpu_entry_area.c b/arch/x86/mm/cpu_entry_area.c index 19c6abf9ea31..c2a54f75d335 100644 --- a/arch/x86/mm/cpu_entry_area.c +++ b/arch/x86/mm/cpu_entry_area.c @@ -52,10 +52,10 @@ cea_map_percpu_pages(void *cea_vaddr, void *ptr, int pages, pgprot_t prot) cea_set_pte(cea_vaddr, per_cpu_ptr_to_phys(ptr), prot); } -static void __init percpu_setup_debug_store(int cpu) +static void __init percpu_setup_debug_store(unsigned int cpu) { #ifdef CONFIG_CPU_SUP_INTEL - int npages; + unsigned int npages; void *cea; if (boot_cpu_data.x86_vendor != X86_VENDOR_INTEL) @@ -79,8 +79,9 @@ static void __init percpu_setup_debug_store(int cpu) } /* Setup the fixmap mappings only once per-processor */ -static void __init setup_cpu_entry_area(int cpu) +static void __init setup_cpu_entry_area(unsigned int cpu) { + struct cpu_entry_area *cea = get_cpu_entry_area(cpu); #ifdef CONFIG_X86_64 /* On 64-bit systems, we use a read-only fixmap GDT and TSS. */ pgprot_t gdt_prot = PAGE_KERNEL_RO; @@ -101,10 +102,9 @@ static void __init setup_cpu_entry_area(int cpu) pgprot_t tss_prot = PAGE_KERNEL; #endif - cea_set_pte(&get_cpu_entry_area(cpu)->gdt, get_cpu_gdt_paddr(cpu), - gdt_prot); + cea_set_pte(&cea->gdt, get_cpu_gdt_paddr(cpu), gdt_prot); - cea_map_percpu_pages(&get_cpu_entry_area(cpu)->entry_stack_page, + cea_map_percpu_pages(&cea->entry_stack_page, per_cpu_ptr(&entry_stack_storage, cpu), 1, PAGE_KERNEL); @@ -128,19 +128,18 @@ static void __init setup_cpu_entry_area(int cpu) BUILD_BUG_ON((offsetof(struct tss_struct, x86_tss) ^ offsetofend(struct tss_struct, x86_tss)) & PAGE_MASK); BUILD_BUG_ON(sizeof(struct tss_struct) % PAGE_SIZE != 0); - cea_map_percpu_pages(&get_cpu_entry_area(cpu)->tss, - &per_cpu(cpu_tss_rw, cpu), + cea_map_percpu_pages(&cea->tss, &per_cpu(cpu_tss_rw, cpu), sizeof(struct tss_struct) / PAGE_SIZE, tss_prot); #ifdef CONFIG_X86_32 - per_cpu(cpu_entry_area, cpu) = get_cpu_entry_area(cpu); + per_cpu(cpu_entry_area, cpu) = cea; #endif #ifdef CONFIG_X86_64 BUILD_BUG_ON(sizeof(exception_stacks) % PAGE_SIZE != 0); BUILD_BUG_ON(sizeof(exception_stacks) != sizeof(((struct cpu_entry_area *)0)->exception_stacks)); - cea_map_percpu_pages(&get_cpu_entry_area(cpu)->exception_stacks, + cea_map_percpu_pages(&cea->exception_stacks, &per_cpu(exception_stacks, cpu), sizeof(exception_stacks) / PAGE_SIZE, PAGE_KERNEL); #endif |