[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: [Xen-devel] [PATCH 2/6] x86: save GUEST_BNDCFGS on context switch...

To: "Paul Durrant" <paul.durrant@xxxxxxxxxx>
From: "Jan Beulich" <JBeulich@xxxxxxxx>
Date: Fri, 08 Mar 2019 09:42:39 -0700
Cc: Kevin Tian <kevin.tian@xxxxxxxxx>, Wei Liu <wei.liu2@xxxxxxxxxx>, Andrew Cooper <andrew.cooper3@xxxxxxxxxx>, Jun Nakajima <jun.nakajima@xxxxxxxxx>, xen-devel <xen-devel@xxxxxxxxxxxxxxxxxxxx>, Roger Pau Monne <roger.pau@xxxxxxxxxx>
Delivery-date: Fri, 08 Mar 2019 16:42:55 +0000
List-id: Xen developer discussion <xen-devel.lists.xenproject.org>

>>> On 07.01.19 at 13:02, <paul.durrant@xxxxxxxxxx> wrote:
> ...to avoid the need for a VMCS reload when the value of MSR_IA32_BNDCFGS is
> read by the tool-stack.

Is this a good trade-off? I.e. are tool stack reads at least as frequent as
context switches?

Jan



_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxxxxxxxxx
https://lists.xenproject.org/mailman/listinfo/xen-devel

Follow-Ups:
- Re: [Xen-devel] [PATCH 2/6] x86: save GUEST_BNDCFGS on context switch...
  - From: Paul Durrant

Prev by Date: Re: [Xen-devel] [PATCH 1/6] x86: stop handling MSR_IA32_BNDCFGS save/restore in implementation code
Next by Date: Re: [Xen-devel] [PATCH 3/6] x86: move the saved value of MSR_IA32_XSS into struct vcpu_msrs
Previous by thread: Re: [Xen-devel] [PATCH 1/6] x86: stop handling MSR_IA32_BNDCFGS save/restore in implementation code
Next by thread: Re: [Xen-devel] [PATCH 2/6] x86: save GUEST_BNDCFGS on context switch...
Index(es):
- Date
- Thread

Lists.xenproject.org is hosted with RackSpace, monitoring our
servers 24x7x365 and backed by RackSpace's Fanatical Support®.