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x86, 64-bit: PSE no longer a hard requirement

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Because Xen doesn't support PSE mappings in guests, all code which
assumed the presence of PSE has been changed to fall back to smaller
mappings if necessary.  As a result, PSE is optional rather than
required (though still used whereever possible).

Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Cc: xen-devel <xen-devel@lists.xensource.com>
Cc: Stephen Tweedie <sct@redhat.com>
Cc: Eduardo Habkost <ehabkost@redhat.com>
Cc: Mark McLoughlin <markmc@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Jeremy Fitzhardinge 2008-06-25 00:19:21 -04:00 committed by Ingo Molnar
parent 7c934d3990
commit 4f30cb0262
1 changed files with 1 additions and 1 deletions
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2
include/asm-x86/required-features.h
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@ -42,7 +42,7 @@
#endif #endif
#ifdef CONFIG_X86_64 #ifdef CONFIG_X86_64
#define NEED_PSE (1<<(X86_FEATURE_PSE & 31)) #define NEED_PSE 0
#define NEED_MSR (1<<(X86_FEATURE_MSR & 31)) #define NEED_MSR (1<<(X86_FEATURE_MSR & 31))
#define NEED_PGE (1<<(X86_FEATURE_PGE & 31)) #define NEED_PGE (1<<(X86_FEATURE_PGE & 31))
#define NEED_FXSR (1<<(X86_FEATURE_FXSR & 31)) #define NEED_FXSR (1<<(X86_FEATURE_FXSR & 31))