> From: Andrew Cooper [mailto:andrew.coop...@citrix.com] > Sent: Monday, February 13, 2017 10:32 PM > > hvm_hw_cpu->msr_flags is in fact the VMX dirty bitmap of MSRs needing to be > restored when switching into guest context. It should never have been part of > the migration state to start with, and Xen must not make any decisions based > on the value seen during restore. > > Identify it as obsolete in the header files, consistently save it as zero and > ignore it on restore. > > The MSRs must be considered dirty during VMCS creation to cause the proper > defaults of 0 to be visible to the guest. > > Signed-off-by: Andrew Cooper <andrew.coop...@citrix.com>
Reviewed-by: Kevin Tian <kevin.t...@intel.com>, with one small comment. the effect of this patch should be more than not leaking syscall MSR. what about making the subject clearer when check-in? Thanks Kevin _______________________________________________ Xen-devel mailing list Xen-devel@lists.xen.org https://lists.xen.org/xen-devel
