diff options
| author | David Woodhouse <dwmw2@infradead.org> | 2007-08-01 11:23:57 +0100 |
|---|---|---|
| committer | David Woodhouse <dwmw2@infradead.org> | 2007-08-01 11:23:57 +0100 |
| commit | 440fdb53b4ae58602711b5b8c3a139ace2404dbb (patch) | |
| tree | c6fb88d6ad537ec53aeecadc75a61ab6147d4c9c /arch/i386/kernel/alternative.c | |
| parent | 8b2b403ce0f1a816b7a6a4f47c8798003b26c07a (diff) | |
| parent | 8d4fbcfbe0a4bfc73e7f0297c59ae514e1f1436f (diff) | |
Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6
Diffstat (limited to 'arch/i386/kernel/alternative.c')
| -rw-r--r-- | arch/i386/kernel/alternative.c | 14 |
1 files changed, 2 insertions, 12 deletions
diff --git a/arch/i386/kernel/alternative.c b/arch/i386/kernel/alternative.c index c3750c2c4113..c85598acb8fd 100644 --- a/arch/i386/kernel/alternative.c +++ b/arch/i386/kernel/alternative.c @@ -430,22 +430,12 @@ void __init alternative_instructions(void) * And on the local CPU you need to be protected again NMI or MCE handlers * seeing an inconsistent instruction while you patch. */ -void __kprobes text_poke(void *oaddr, unsigned char *opcode, int len) +void __kprobes text_poke(void *addr, unsigned char *opcode, int len) { - u8 *addr = oaddr; - if (!pte_write(*lookup_address((unsigned long)addr))) { - struct page *p[2] = { virt_to_page(addr), virt_to_page(addr+PAGE_SIZE) }; - addr = vmap(p, 2, VM_MAP, PAGE_KERNEL); - if (!addr) - return; - addr += ((unsigned long)oaddr) % PAGE_SIZE; - } memcpy(addr, opcode, len); sync_core(); /* Not strictly needed, but can speed CPU recovery up. Ignore cross cacheline case. */ if (cpu_has_clflush) - asm("clflush (%0) " :: "r" (oaddr) : "memory"); - if (addr != oaddr) - vunmap(addr); + asm("clflush (%0) " :: "r" (addr) : "memory"); } |