[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [PATCH v5] x86/vmx: add hvm functions to get/set non-register state
On Fri, Mar 25, 2022 at 9:34 AM Tamas K Lengyel <tamas.lengyel@xxxxxxxxx> wrote: > > During VM forking and resetting a failed vmentry has been observed due > to the guest non-register state going out-of-sync with the guest register > state. For example, a VM fork reset right after a STI instruction can trigger > the failed entry. This is due to the guest non-register state not being saved > from the parent VM, thus the reset operation only copies the register state. > > Fix this by adding a new pair of hvm functions to get/set the guest > non-register state so that the overall vCPU state remains in sync. > > Signed-off-by: Tamas K Lengyel <tamas.lengyel@xxxxxxxxx> > --- > v5: Switch to internal-only hvm funcs instead of adding to hvm_hw_cpu Patch ping.
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