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Re: [Xen-devel] [PATCH for-4.11] x86/VT-x: Fix printing of EFER in vmcs_dump_vcpu()

To: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>, Xen-devel <xen-devel@xxxxxxxxxxxxx>

From: "Tian, Kevin" <kevin.tian@xxxxxxxxx>

Date: Tue, 5 Jun 2018 03:02:10 +0000

Accept-language: en-US

Cc: Juergen Gross <jgross@xxxxxxxx>, "Nakajima, Jun" <jun.nakajima@xxxxxxxxx>, Jan Beulich <JBeulich@xxxxxxxx>

Delivery-date: Tue, 05 Jun 2018 03:02:28 +0000

Dlp-product: dlpe-windows

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Dlp-version: 11.0.200.100

List-id: Xen developer discussion <xen-devel.lists.xenproject.org>

Thread-index: AQHT+Pjy2Zy66t1uz0O4sLLr1GMZlaRRAKHw

Thread-topic: [PATCH for-4.11] x86/VT-x: Fix printing of EFER in vmcs_dump_vcpu()

> From: Andrew Cooper [mailto:andrew.cooper3@xxxxxxxxxx] > Sent: Friday, June 1, 2018 12:03 AM > > This is essentially a "take 2" of c/s 82540b66ce "x86/VT-x: Fix determination > of EFER.LMA in vmcs_dump_vcpu()" because in hindight, that change was > more > problematic than useful. > > The original reason was to fix the logic for determining when not to print > the > PDPTE pointers. However, mutating the efer variable (particularly LME and > LMA) before printing it interferes with diagnosing vmentry failures. > > Instead of modifying efer, change the PDPTE conditional to use > VM_ENTRY_IA32E_MODE. > > Signed-off-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx> 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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