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| author | Thomas Gleixner <tglx@linutronix.de> | 2020-04-21 11:20:36 +0200 |
|---|---|---|
| committer | Borislav Petkov <bp@suse.de> | 2020-04-26 11:10:25 +0200 |
| commit | 29def599b38bb8a10f48f83821dd990615300b04 (patch) | |
| tree | 6135cb7b51ad2a42d09e9cf6d993bab864032b31 /arch/x86/include/asm/paravirt.h | |
| parent | 58430c5dba7bfe1d132b3c07f0d7a596852ef55c (diff) | |
| download | linux-stable-29def599b38bb8a10f48f83821dd990615300b04.tar.gz linux-stable-29def599b38bb8a10f48f83821dd990615300b04.tar.bz2 linux-stable-29def599b38bb8a10f48f83821dd990615300b04.zip | |
x86/tlb: Move flush_tlb_others() out of line
cpu_tlbstate is exported because various TLB-related functions need
access to it, but cpu_tlbstate is sensitive information which should
only be accessed by well-contained kernel functions and not be directly
exposed to modules.
As a last step, move __flush_tlb_others() out of line and hide the
native function. The latter can be static when CONFIG_PARAVIRT is
disabled.
No functional change.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Borislav Petkov <bp@suse.de>
Reviewed-by: Alexandre Chartre <alexandre.chartre@oracle.com>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lkml.kernel.org/r/20200421092559.641957686@linutronix.de
Diffstat (limited to 'arch/x86/include/asm/paravirt.h')
| -rw-r--r-- | arch/x86/include/asm/paravirt.h | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/arch/x86/include/asm/paravirt.h b/arch/x86/include/asm/paravirt.h index dcd6517a694a..5ca5d297df75 100644 --- a/arch/x86/include/asm/paravirt.h +++ b/arch/x86/include/asm/paravirt.h @@ -50,6 +50,8 @@ static inline void slow_down_io(void) void native_flush_tlb_local(void); void native_flush_tlb_global(void); void native_flush_tlb_one_user(unsigned long addr); +void native_flush_tlb_others(const struct cpumask *cpumask, + const struct flush_tlb_info *info); static inline void __flush_tlb_local(void) { @@ -66,8 +68,8 @@ static inline void __flush_tlb_one_user(unsigned long addr) PVOP_VCALL1(mmu.flush_tlb_one_user, addr); } -static inline void flush_tlb_others(const struct cpumask *cpumask, - const struct flush_tlb_info *info) +static inline void __flush_tlb_others(const struct cpumask *cpumask, + const struct flush_tlb_info *info) { PVOP_VCALL2(mmu.flush_tlb_others, cpumask, info); } |