diff options
| author | Helge Deller <deller@gmx.de> | 2026-03-09 15:16:37 +0100 |
|---|---|---|
| committer | Helge Deller <deller@gmx.de> | 2026-03-15 09:28:49 +0100 |
| commit | 2c98a8fbd6aa647414c6248dacf254ebe91c79ad (patch) | |
| tree | f1f22cdf86f6de71887cd8aafe60f4a6896cfd22 | |
| parent | 1f318b96cc84d7c2ab792fcc0bfd42a7ca890681 (diff) | |
parisc: Flush correct cache in cacheflush() syscall
The assembly flush instructions were swapped for I- and D-cache flags:
SYSCALL_DEFINE3(cacheflush, ...)
{
if (cache & DCACHE) {
"fic ...\n"
}
if (cache & ICACHE && error == 0) {
"fdc ...\n"
}
Fix it by using fdc for DCACHE, and fic for ICACHE flushing.
Reported-by: Felix Lechner <felix.lechner@lease-up.com>
Fixes: c6d96328fecd ("parisc: Add cacheflush() syscall")
Cc: <stable@vger.kernel.org> # v6.5+
Signed-off-by: Helge Deller <deller@gmx.de>
| -rw-r--r-- | arch/parisc/kernel/cache.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/parisc/kernel/cache.c b/arch/parisc/kernel/cache.c index 4c5240d3a3c7..b189265785dc 100644 --- a/arch/parisc/kernel/cache.c +++ b/arch/parisc/kernel/cache.c @@ -953,7 +953,7 @@ SYSCALL_DEFINE3(cacheflush, unsigned long, addr, unsigned long, bytes, #else "1: cmpb,<<,n %0,%2,1b\n" #endif - " fic,m %3(%4,%0)\n" + " fdc,m %3(%4,%0)\n" "2: sync\n" ASM_EXCEPTIONTABLE_ENTRY_EFAULT(1b, 2b, "%1") : "+r" (start), "+r" (error) @@ -968,7 +968,7 @@ SYSCALL_DEFINE3(cacheflush, unsigned long, addr, unsigned long, bytes, #else "1: cmpb,<<,n %0,%2,1b\n" #endif - " fdc,m %3(%4,%0)\n" + " fic,m %3(%4,%0)\n" "2: sync\n" ASM_EXCEPTIONTABLE_ENTRY_EFAULT(1b, 2b, "%1") : "+r" (start), "+r" (error) |