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| author | H. Peter Anvin <hpa@zytor.com> | 2012-08-14 09:53:38 -0700 |
|---|---|---|
| committer | H. Peter Anvin <hpa@zytor.com> | 2012-08-14 09:58:25 -0700 |
| commit | f026cfa82f628db24b8cea41b9d6202af104cecb (patch) | |
| tree | 1a5e36878ad1134587220e9a3d229c5977271947 /arch/x86/mm/pageattr.c | |
| parent | f1c6300183dbf5b9da25988e13f6f25a9e27151b (diff) | |
| download | linux-f026cfa82f628db24b8cea41b9d6202af104cecb.tar.gz linux-f026cfa82f628db24b8cea41b9d6202af104cecb.tar.bz2 linux-f026cfa82f628db24b8cea41b9d6202af104cecb.zip | |
Revert "x86-64/efi: Use EFI to deal with platform wall clock"
This reverts commit bacef661acdb634170a8faddbc1cf28e8f8b9eee.
This commit has been found to cause serious regressions on a number of
ASUS machines at the least. We probably need to provide a 1:1 map in
addition to the EFI virtual memory map in order for this to work.
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Reported-and-bisected-by: Jérôme Carretero <cJ-ko@zougloub.eu>
Cc: Jan Beulich <jbeulich@suse.com>
Cc: Matt Fleming <matt.fleming@intel.com>
Cc: Matthew Garrett <mjg@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/20120805172903.5f8bb24c@zougloub.eu
Diffstat (limited to 'arch/x86/mm/pageattr.c')
| -rw-r--r-- | arch/x86/mm/pageattr.c | 10 |
1 files changed, 4 insertions, 6 deletions
diff --git a/arch/x86/mm/pageattr.c b/arch/x86/mm/pageattr.c index 931930a96160..a718e0d23503 100644 --- a/arch/x86/mm/pageattr.c +++ b/arch/x86/mm/pageattr.c @@ -919,13 +919,11 @@ static int change_page_attr_set_clr(unsigned long *addr, int numpages, /* * On success we use clflush, when the CPU supports it to - * avoid the wbindv. If the CPU does not support it, in the - * error case, and during early boot (for EFI) we fall back - * to cpa_flush_all (which uses wbinvd): + * avoid the wbindv. If the CPU does not support it and in the + * error case we fall back to cpa_flush_all (which uses + * wbindv): */ - if (early_boot_irqs_disabled) - __cpa_flush_all((void *)(long)cache); - else if (!ret && cpu_has_clflush) { + if (!ret && cpu_has_clflush) { if (cpa.flags & (CPA_PAGES_ARRAY | CPA_ARRAY)) { cpa_flush_array(addr, numpages, cache, cpa.flags, pages); |