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Message-ID: <20140820083833.GA27197@kernel> Date: Wed, 20 Aug 2014 16:38:34 +0800 From: Wanpeng Li <wanpeng.li@...ux.intel.com> To: Paolo Bonzini <pbonzini@...hat.com> Cc: Marcelo Tosatti <mtosatti@...hat.com>, Gleb Natapov <gleb@...nel.org>, Zhang Yang <yang.z.zhang@...el.com>, kvm@...r.kernel.org, linux-kernel@...r.kernel.org Subject: Re: [PATCH v4] KVM: vmx: fix ept reserved bits for 1-GByte page On Wed, Aug 20, 2014 at 10:13:07AM +0200, Paolo Bonzini wrote: >Il 20/08/2014 09:31, Wanpeng Li ha scritto: >> EPT misconfig handler in kvm will check which reason lead to EPT >> misconfiguration after vmexit. One of the reasons is that an EPT >> paging-structure entry is configured with settings reserved for >> future functionality. However, the handler can't identify if >> paging-structure entry of reserved bits for 1-GByte page are >> configured, since PDPTE which point to 1-GByte page will reserve >> bits 29:12 instead of bits 7:3 which are reserved for PDPTE that >> references an EPT Page Directory. This patch fix it by reserve >> bits 29:12 for 1-GByte page. > >Thanks, the patch looks good. > >Can you describe how you detected the problem and how you're testing for it? > I found the issue by reviewing codes. Regards, Wanpeng Li >Paolo -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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