[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] [PATCH v3 1/4] x86/vmx: introduce vmwrite_safe()
> From: Sergey Dyasli [mailto:sergey.dyasli@xxxxxxxxxx] > Sent: Wednesday, February 08, 2017 6:10 PM > > Any fail during the original __vmwrite() leads to BUG() which can be > easily exploited from a guest in the nested vmx mode. > > The new function returns error code depending on the outcome: > > VMsucceed: 0 > VMfailValid: VM Instruction Error Number > VMfailInvalid: a new VMX_INSN_FAIL_INVALID > > A new macro GAS_VMX_OP is introduced in order to improve the > readability of asm. Existing ASM_FLAG_OUT macro is reused and copied > into asm_defns.h > > Signed-off-by: Sergey Dyasli <sergey.dyasli@xxxxxxxxxx> Acked-by: Kevin Tian <kevin.tian@xxxxxxxxx> _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxx https://lists.xen.org/xen-devel
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