search for: x86_feature_dscpl

Displaying 2 results from an estimated 2 matches for "x86_feature_dscpl".

2013 Mar 12
0
[PATCH] vpmu intel: pass through cpuid bits when BTS is enabled
Hi, this patch passes the orginal cpuid bits for X86_FEATURE_DTES64 (64-bit DS Area) and X86_FEATURE_DSCPL (CPL Qualified Debug Store) to the guest when the BTS feature is switched on. I forgot this when I did this BTS emulation. Thanks. Dietmar. Signed-off-by: Dietmar Hahn <dietmar.hahn@ts.fujitsu.com> diff -r a6b81234b189 xen/arch/x86/hvm/vmx/vpmu_core2.c --- a/xen/arch/x86/hvm/vmx/vpmu_cor...
2011 Aug 15
36
expose MWAIT to dom0
...ed_invalid_op(str __clear_bit(X86_FEATURE_PBE, &d); __clear_bit(X86_FEATURE_DTES64 % 32, &c); - if ( !IS_PRIV(current->domain) ) - __clear_bit(X86_FEATURE_MWAIT % 32, &c); + __clear_bit(X86_FEATURE_MWAIT % 32, &c); __clear_bit(X86_FEATURE_DSCPL % 32, &c); __clear_bit(X86_FEATURE_VMXE % 32, &c); __clear_bit(X86_FEATURE_SMXE % 32, &c); [...] This then brings a problem to Dom0 which thinks underlying CPU doesn''t report mwait, and thus notify BIOS to use old I/O based method. Later a trick is integrate...