[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] [PATCH v2] x86/vmx: correctly gather gs_shadow value for current vCPU
> From: Tamas K Lengyel [mailto:tamas@xxxxxxxxxxxxx] > Sent: Thursday, May 2, 2019 7:52 AM > > Currently the gs_shadow value is only cached when the vCPU is being > scheduled > out by Xen. Reporting this (usually) stale value through vm_event is > incorrect, > since it doesn't represent the actual state of the vCPU at the time the event > was recorded. This prevents vm_event subscribers from correctly finding > kernel > structures in the guest when it is trapped while in ring3. > > Refresh shadow_gs value when the context being saved is for the current > vCPU. > > Signed-off-by: Tamas K Lengyel <tamas@xxxxxxxxxxxxx> Acked-by: Kevin Tian <kevin.tian@xxxxxxxxx> _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxxx https://lists.xenproject.org/mailman/listinfo/xen-devel
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