On 02/24/2017 05:59 AM, Andrew Cooper wrote: > c/s 49de10f3c "x86/hvm: Don't raise #GP behind the emulators back for MSR > accesses" missed an edge case. > > hvm_set_efer() raises #GP itself, so deliberately avoided the goto gp_fault > path in hvm_msr_write_intercept(). > > With the above change, guest updates to MSR_EFER which end up faulting raises > hvm_msr_write_intercept() returning X86EMUL_EXCEPTION. The second #GP gets > combined to #DF and handed back to the guest. > > Update hvm_set_efer() to avoid raising #GP, requiring its callers to do so. > > Signed-off-by: Andrew Cooper <andrew.coop...@citrix.com> > CC: Jan Beulich <jbeul...@suse.com>
Reviewed-by: Boris Ostrovsky <boris.ostrov...@oracle.com> _______________________________________________ Xen-devel mailing list Xen-devel@lists.xen.org https://lists.xen.org/xen-devel
