From: Euan Harris <euan.harris@citrix.com>
To: xen-devel@lists.xenproject.org
Cc: andrew.cooper3@citrix.com, kevin.tian@intel.com,
Euan Harris <euan.harris@citrix.com>,
jun.nakajima@intel.com, jbeulich@suse.com
Subject: [PATCH 0/2] Validate host VMX MSRs before accessing them
Date: Thu, 9 Jun 2016 10:14:08 +0000 [thread overview]
Message-ID: <1465467250-8742-1-git-send-email-euan.harris@citrix.com> (raw)
nvmx_msr_read_intercept() does not check the prerequisites before
accessing MSR_IA32_VMX_PROCBASED_CTLS2, MSR_IA32_VMX_EPT_VPID_CAP,
MSR_IA32_VMX_VMFUNC on the host. Accessing these MSRs from a nested
VMX guest running on a host which does not support them will cause
Xen to crash with a GPF.
Euan Harris (2):
nested vmx: Fix comment typos in nvmx_msr_read_intercept()
nested vmx: Validate host VMX MSRs before accessing them
xen/arch/x86/hvm/vmx/vvmx.c | 32 +++++++++++++++++++++++---------
1 file changed, 23 insertions(+), 9 deletions(-)
--
1.7.10.4
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next reply other threads:[~2016-06-09 10:14 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-06-09 10:14 Euan Harris [this message]
2016-06-09 10:14 ` [PATCH 1/2] nested vmx: Fix comment typos in nvmx_msr_read_intercept() Euan Harris
2016-06-12 7:37 ` Tian, Kevin
2016-06-09 10:14 ` [PATCH 2/2] nested vmx: Validate host VMX MSRs before accessing them Euan Harris
2016-06-09 12:47 ` Jan Beulich
2016-06-09 13:20 ` Euan Harris
2016-06-12 7:39 ` Tian, Kevin
2016-06-13 12:13 ` [PATCH 0/2] " Andrew Cooper
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