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| author | Borislav Petkov (AMD) <bp@alien8.de> | 2024-11-19 12:21:32 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2025-01-09 13:31:38 +0100 |
| commit | 8322a66f9369285a68002d2c761b4d38945011b5 (patch) | |
| tree | 7e96bcdb713b32e6df602f3ef8a3a5f67bf7eec2 /arch | |
| parent | bffaf4cb28102ded8a78ce0f708cda3ead9046c8 (diff) | |
| download | linux-8322a66f9369285a68002d2c761b4d38945011b5.tar.gz linux-8322a66f9369285a68002d2c761b4d38945011b5.tar.bz2 linux-8322a66f9369285a68002d2c761b4d38945011b5.zip | |
x86/mm: Carve out INVLPG inline asm for use by others
[ Upstream commit f1d84b59cbb9547c243d93991acf187fdbe9fbe9 ]
No functional changes.
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Link: https://lore.kernel.org/r/ZyulbYuvrkshfsd2@antipodes
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/x86/include/asm/tlb.h | 4 | ||||
| -rw-r--r-- | arch/x86/mm/tlb.c | 3 |
2 files changed, 6 insertions, 1 deletions
diff --git a/arch/x86/include/asm/tlb.h b/arch/x86/include/asm/tlb.h index 580636cdc257..4d3c9d00d6b6 100644 --- a/arch/x86/include/asm/tlb.h +++ b/arch/x86/include/asm/tlb.h @@ -34,4 +34,8 @@ static inline void __tlb_remove_table(void *table) free_page_and_swap_cache(table); } +static inline void invlpg(unsigned long addr) +{ + asm volatile("invlpg (%0)" ::"r" (addr) : "memory"); +} #endif /* _ASM_X86_TLB_H */ diff --git a/arch/x86/mm/tlb.c b/arch/x86/mm/tlb.c index 2fbae48f0b47..64f594826a28 100644 --- a/arch/x86/mm/tlb.c +++ b/arch/x86/mm/tlb.c @@ -19,6 +19,7 @@ #include <asm/cacheflush.h> #include <asm/apic.h> #include <asm/perf_event.h> +#include <asm/tlb.h> #include "mm_internal.h" @@ -1145,7 +1146,7 @@ STATIC_NOPV void native_flush_tlb_one_user(unsigned long addr) bool cpu_pcide; /* Flush 'addr' from the kernel PCID: */ - asm volatile("invlpg (%0)" ::"r" (addr) : "memory"); + invlpg(addr); /* If PTI is off there is no user PCID and nothing to flush. */ if (!static_cpu_has(X86_FEATURE_PTI)) |