From: Nadav Amit Date: Thu, 2 Oct 2014 22:10:02 +0000 (+0300) Subject: KVM: x86: Clear DR7.LE during task-switch X-Git-Tag: omap-for-v3.19/fixes-rc1~43^2~106 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=0e8a09969afb56b6bcdfe159f90a5fa20f831e85;p=pandora-kernel.git KVM: x86: Clear DR7.LE during task-switch DR7.LE should be cleared during task-switch. This feature is poorly documented. For reference, see: http://pdos.csail.mit.edu/6.828/2005/readings/i386/s12_02.htm SDM [17.2.4]: This feature is not supported in the P6 family processors, later IA-32 processors, and Intel 64 processors. AMD [2:13.1.1.4]: This bit is ignored by implementations of the AMD64 architecture. Intel's formulation could mean that it isn't even zeroed, but current hardware indeed does not behave like that. Signed-off-by: Nadav Amit Reviewed-by: Radim Krčmář Signed-off-by: Paolo Bonzini --- Reading git-diff-tree failed