diff options
author | Russell King (Oracle) <rmk+kernel@armlinux.org.uk> | 2022-08-16 12:19:40 +0100 |
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committer | Russell King (Oracle) <rmk+kernel@armlinux.org.uk> | 2023-08-31 15:49:17 +0100 |
commit | d7c5c5019a1d9e63de7d90b9fc3c543a48a73fb4 (patch) | |
tree | 38792bf3b0895da5409535417b1f56a163e99e6c | |
parent | 7994cd9431e2b3980ea9b6ca5fbcf0fb2ede84d9 (diff) |
arm64: make clean_dcache_range_nopatch() visible
When we hook into the kernel text patching code, we will need to call
clean_dcache_range_nopatch() to ensure that the patching of the
replicated kernel text is properly visible to other CPUs. Make this
function available to the replication code.
Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
-rw-r--r-- | arch/arm64/include/asm/cacheflush.h | 2 | ||||
-rw-r--r-- | arch/arm64/kernel/alternative.c | 2 |
2 files changed, 3 insertions, 1 deletions
diff --git a/arch/arm64/include/asm/cacheflush.h b/arch/arm64/include/asm/cacheflush.h index 37185e978aeb..ac9ad56d5212 100644 --- a/arch/arm64/include/asm/cacheflush.h +++ b/arch/arm64/include/asm/cacheflush.h @@ -104,6 +104,8 @@ static inline void flush_icache_range(unsigned long start, unsigned long end) } #define flush_icache_range flush_icache_range +void clean_dcache_range_nopatch(u64 start, u64 end); + /* * Copy user data from/to a page which is mapped into a different * processes address space. Really, we want to allow our "user diff --git a/arch/arm64/kernel/alternative.c b/arch/arm64/kernel/alternative.c index 8ff6610af496..ea3f4104771d 100644 --- a/arch/arm64/kernel/alternative.c +++ b/arch/arm64/kernel/alternative.c @@ -121,7 +121,7 @@ static noinstr void patch_alternative(struct alt_instr *alt, * accidentally call into the cache.S code, which is patched by us at * runtime. */ -static noinstr void clean_dcache_range_nopatch(u64 start, u64 end) +noinstr void clean_dcache_range_nopatch(u64 start, u64 end) { u64 cur, d_size, ctr_el0; |