Displaying 2 results from an estimated 2 matches for "cpu_has_de".
2007 Aug 09
1
[PATCH] svm: allow guest to use EFER.FFXSE and EFER.LMSLE
...bility)
@@ -121,6 +121,7 @@
#define cpu_has_cyrix_arr boot_cpu_has(X86_FEATURE_CYRIX_ARR)
#define cpu_has_centaur_mcr boot_cpu_has(X86_FEATURE_CENTAUR_MCR)
#define cpu_has_clflush boot_cpu_has(X86_FEATURE_CLFLSH)
+#define cpu_has_ffxsr 0
#else /* __x86_64__ */
#define cpu_has_vme 0
#define cpu_has_de 1
@@ -144,6 +145,7 @@
#define cpu_has_cyrix_arr 0
#define cpu_has_centaur_mcr 0
#define cpu_has_clflush boot_cpu_has(X86_FEATURE_CLFLSH)
+#define cpu_has_ffxsr boot_cpu_has(X86_FEATURE_FFXSR)
#endif
#endif /* __ASM_I386_CPUFEATURE_H */
Index: 2007-08-08/xen/include/asm-x86/msr.h
=========...
2011 Aug 15
36
expose MWAIT to dom0
There''re basically two methods to enter a given C-state: legacy (hlt + I/O read),
and native(using mwait). MWAIT is always preferred when both underlying CPU
and OS support, which is a more efficient way to conduct C-state transition.
Xen PM relies on Dom0 to parse ACPI Cx/Px information, which involves one
step to notify BIOS about a set of capabilities supported by OSPM. One capability