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x86: Disable CLFLUSH support again

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It turns out CLFLUSH support is still not complete; we
flush the wrong pages.  Again disable it for the release.
Noticed by Jan Beulich who then also noticed a stupid typo later.

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Andi Kleen 2007-08-10 22:31:02 +02:00 committed by Linus Torvalds
parent 3f3f7b74a7
commit d3f3c93469
2 changed files with 3 additions and 2 deletions
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2
arch/i386/mm/pageattr.c
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@ -82,7 +82,7 @@ static void flush_kernel_map(void *arg)
struct page *p;
/* High level code is not ready for clflush yet */
if (cpu_has_clflush) {
if (0 && cpu_has_clflush) {
list_for_each_entry (p, lh, lru)
cache_flush_page(p);
} else if (boot_cpu_data.x86_model >= 4)

3
arch/x86_64/mm/pageattr.c
View file

@ -75,7 +75,8 @@ static void flush_kernel_map(void *arg)
/* When clflush is available always use it because it is
much cheaper than WBINVD. */
if (!cpu_has_clflush)
/* clflush is still broken. Disable for now. */
if (1 || !cpu_has_clflush)
asm volatile("wbinvd" ::: "memory");
else list_for_each_entry(pg, l, lru) {
void *adr = page_address(pg);