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

[Jeremy Fitzhardinge <jeremy@xxxxxxxx>]

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@xxxxxxxxxx>
---
 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))



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