[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: [Qemu-devel] [RFC PATCH] i386: Remove ospke CPUID flag name
From: |
Eduardo Habkost |
Subject: |
Re: [Qemu-devel] [RFC PATCH] i386: Remove ospke CPUID flag name |
Date: |
Tue, 12 Jun 2018 12:01:53 -0300 |
User-agent: |
Mutt/1.9.2 (2017-12-15) |
On Tue, Jun 12, 2018 at 08:55:55AM +0200, Paolo Bonzini wrote:
> On 11/06/2018 22:37, Eduardo Habkost wrote:
> > RFC NOTE: Paolo, Richard, as far as I can see, there's no point
> > in enabling OSPKE in user-mode QEMU. Do you confirm that?
> >
> > OSPKE is not a static feature flag: it changes dynamically at
> > runtime depending on CR4, and it was never configurable: KVM
> > never returned OSPKE on GET_SUPPORTED_CPUID, and on TCG enables
> > it automatically if CR4_PKE_MASK is set.
> >
> > Remove OSPKE from the feature name array so users don't try to
> > configure it manually.
> >
> > Signed-off-by: Eduardo Habkost <address@hidden>
>
> Yes, it's the same as OSXSAVE. Thanks!
CR4_OSXSAVE_MASK is automatically enabled on user-mode QEMU,
though.
My question is if it would make any sense to enable CR4_PKE_MASK
too.
--
Eduardo
- [Qemu-devel] [RFC PATCH] i386: Remove ospke CPUID flag name, Eduardo Habkost, 2018/06/11
- Re: [Qemu-devel] [RFC PATCH] i386: Remove ospke CPUID flag name, Richard Henderson, 2018/06/11
- Re: [Qemu-devel] [RFC PATCH] i386: Remove ospke CPUID flag name, Paolo Bonzini, 2018/06/12
- Re: [Qemu-devel] [RFC PATCH] i386: Remove ospke CPUID flag name,
Eduardo Habkost <=
- Re: [Qemu-devel] [RFC PATCH] i386: Remove ospke CPUID flag name, Paolo Bonzini, 2018/06/12
- Re: [Qemu-devel] [RFC PATCH] i386: Remove ospke CPUID flag name, Eduardo Habkost, 2018/06/12
- Re: [Qemu-devel] [RFC PATCH] i386: Remove ospke CPUID flag name, Paolo Bonzini, 2018/06/13
- Re: [Qemu-devel] [RFC PATCH] i386: Remove ospke CPUID flag name, Eduardo Habkost, 2018/06/13
- Re: [Qemu-devel] [RFC PATCH] i386: Remove ospke CPUID flag name, Paolo Bonzini, 2018/06/13