From: "Tian, Kevin" <kevin.tian@intel.com>
To: Andrew Cooper <andrew.cooper3@citrix.com>,
Xen-devel <xen-devel@lists.xen.org>
Cc: "Wei Liu" <wei.liu2@citrix.com>,
"Nakajima, Jun" <jun.nakajima@intel.com>,
"Jan Beulich" <JBeulich@suse.com>,
"Roger Pau Monné" <roger.pau@citrix.com>
Subject: Re: [PATCH v2 4/9] x86/vmx: Support remote access to the MSR lists
Date: Tue, 12 Jun 2018 02:49:56 +0000 [thread overview]
Message-ID: <AADFC41AFE54684AB9EE6CBC0274A5D1912048F1@SHSMSX101.ccr.corp.intel.com> (raw)
In-Reply-To: <1528483723-4128-5-git-send-email-andrew.cooper3@citrix.com>
> From: Andrew Cooper [mailto:andrew.cooper3@citrix.com]
> Sent: Saturday, June 9, 2018 2:49 AM
>
> At the moment, all modifications of the MSR lists are in current context.
> However, future changes may need to put MSR_EFER into the lists from
> domctl
> hypercall context.
>
> Plumb a struct vcpu parameter down through the infrastructure, and use
> vmx_vmcs_{enter,exit}() for safe access to the VMCS in vmx_add_msr().
> Use
> assertions to ensure that access is either in current context, or while the
> vcpu is paused.
>
> Note these expectations beside the fields in arch_vmx_struct, and reorder
> the
> fields to avoid unnecessary padding.
>
> Signed-off-by: Andrew Cooper <andrew.cooper3@citrix.com>
Acked-by: Kevin Tian <kevin.tian@intel.com>
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next prev parent reply other threads:[~2018-06-12 2:49 UTC|newest]
Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-06-08 18:48 [PATCH v2 0/9] x86/vmx: Don't leak EFER.NXE into guest context Andrew Cooper
2018-06-08 18:48 ` [PATCH v2 1/9] x86/vmx: API improvements for MSR load/save infrastructure Andrew Cooper
2018-06-08 18:48 ` [PATCH v2 2/9] x86/vmx: Internal cleanup " Andrew Cooper
2018-06-08 18:48 ` [PATCH v2 3/9] x86/vmx: Factor locate_msr_entry() out of vmx_find_msr() and vmx_add_msr() Andrew Cooper
2018-06-08 18:48 ` [PATCH v2 4/9] x86/vmx: Support remote access to the MSR lists Andrew Cooper
2018-06-12 2:49 ` Tian, Kevin [this message]
2018-06-12 8:06 ` Jan Beulich
2018-06-08 18:48 ` [PATCH v2 5/9] x86/vmx: Improvements to LBR MSR handling Andrew Cooper
2018-06-12 2:58 ` Tian, Kevin
2018-06-12 8:15 ` Jan Beulich
2018-06-12 8:51 ` Andrew Cooper
2018-06-12 9:00 ` Jan Beulich
2018-06-12 16:33 ` Andrew Cooper
2018-06-13 6:30 ` Jan Beulich
2018-06-13 10:37 ` Andrew Cooper
2018-06-27 8:43 ` [PATCH v3 " Andrew Cooper
2018-06-27 9:12 ` Jan Beulich
2018-06-27 9:50 ` Andrew Cooper
2018-06-27 9:58 ` Jan Beulich
2018-06-27 9:59 ` Andrew Cooper
2018-06-08 18:48 ` [PATCH v2 6/9] x86/vmx: Pass an MSR value into vmx_msr_add() Andrew Cooper
2018-06-12 3:11 ` Tian, Kevin
2018-06-12 8:19 ` Jan Beulich
2018-06-08 18:48 ` [PATCH v2 7/9] x86/vmx: Support load-only guest MSR list entries Andrew Cooper
2018-06-12 3:22 ` Tian, Kevin
2018-06-08 18:48 ` [PATCH v2 8/9] x86/vmx: Support removing MSRs from the host/guest load/save lists Andrew Cooper
2018-06-12 3:24 ` Tian, Kevin
2018-06-12 8:27 ` Jan Beulich
2018-06-12 17:40 ` Andrew Cooper
2018-06-12 18:23 ` Andrew Cooper
2018-06-13 6:33 ` Jan Beulich
2018-06-08 18:48 ` [PATCH v2 9/9] x86/vmx: Don't leak EFER.NXE into guest context Andrew Cooper
2018-06-12 6:04 ` Tian, Kevin
2018-06-12 8:54 ` Jan Beulich
2018-06-13 10:19 ` Andrew Cooper
2018-06-13 11:19 ` [PATCH v3 " Andrew Cooper
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