[PATCH 25 of 36] x86_64: PSE no longer a hard requirement

Jeremy Fitzhardinge
2008-06-25T04:48:32Z

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>
---
include/asm-x86/required-features.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/asm-x86/required-features.h b/include/asm-x86/required-features.h
--- a/include/asm-x86/required-features.h
+++ b/include/asm-x86/required-features.h
@@ -42,7 +42,7 @@
#endif

#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_PGE (1<<(X86_FEATURE_PGE & 31))
#define NEED_FXSR (1<<(X86_FEATURE_FXSR & 31))