From: "Pavel Dovgalyuk" <dovgaluk@ispras.ru>
To: "'Paolo Bonzini'" <pbonzini@redhat.com>,
"'Dr. David Alan Gilbert'" <dgilbert@redhat.com>
Cc: quintela@redhat.com, qemu-devel@nongnu.org, ehabkost@redhat.com,
rth@twiddle.net
Subject: Re: [Qemu-devel] i386: EFER vs 32-bit CPU
Date: Wed, 29 May 2019 14:53:09 +0300 [thread overview]
Message-ID: <003f01d51615$16270d40$427527c0$@ru> (raw)
In-Reply-To: <5c55c39b-694b-5d4e-d420-5df0feabc1e8@redhat.com>
> From: Paolo Bonzini [mailto:pbonzini@redhat.com]
> On 29/05/19 13:30, Dr. David Alan Gilbert wrote:
> >> Should we add a section for i386, which duplicates efer, or just version_id of the main
> VMSD should
> >> be updated?
> >
> > You could do:
> >
> > #ifdef TARGET_X86_64
> > VMSTATE_UINT64(env.efer, X86CPU),
> > VMSTATE_UINT64(env.star, X86CPU),
> > ...
> >
> > to become:
> >
> > VMSTATE_UINT64_TEST(env.efer, X86CPU, efer_needed)
> > #ifdef TARGET_X86_64
> > VMSTATE_UINT64(env.star, X86CPU),
> >
> >
> > and then make efer_needed a function that returns true if
> > TARGET_X86_64 or it's a new machine type that knows about whatever
> > you're going to do with it.
>
> I prefer adding a subsection for 32-bit, so that EFER is saved/restored
> if nonzero.
The question is: should we remove EFER from the original VMSD?
Pavel Dovgalyuk
next prev parent reply other threads:[~2019-05-29 11:55 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-05-29 11:26 [Qemu-devel] i386: EFER vs 32-bit CPU Pavel Dovgalyuk
2019-05-29 11:30 ` Dr. David Alan Gilbert
2019-05-29 11:39 ` Paolo Bonzini
2019-05-29 11:53 ` Pavel Dovgalyuk [this message]
2019-05-29 12:36 ` Dr. David Alan Gilbert
2019-05-29 14:03 ` Pavel Dovgalyuk
2019-05-30 0:52 ` Peter Xu
2019-05-30 5:54 ` Pavel Dovgalyuk
2019-05-30 9:00 ` Peter Xu
2019-05-30 9:04 ` Peter Xu
2019-05-30 11:00 ` TeLeMan
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