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From: Mathias Krause <>
To: Avi Kivity <>
Cc: Marcelo Tosatti <>,,
Subject: Re: [PATCH 2/8] KVM: x86 emulator: use aligned variants of SSE register ops
Date: Tue, 4 Sep 2012 14:51:06 +0200	[thread overview]
Message-ID: <> (raw)
In-Reply-To: <>

On Tue, Sep 4, 2012 at 2:13 PM, Avi Kivity <> wrote:
> On 09/04/2012 03:09 PM, Avi Kivity wrote:
>> On 08/30/2012 02:30 AM, Mathias Krause wrote:
>>> As the the compiler ensures that the memory operand is always aligned
>>> to a 16 byte memory location,
>> I'm not sure it does.  Is V4SI aligned?  Do we use alignof() to
>> propagate the alignment to the vcpu allocation code?

I checked that to by introducing a dummy char member in struct operand
that would have misaligned vec_val but, indeed, the compiler ensured
it's still 16 byte aligned.

> We actually do.  But please rebase the series against next, I got some
> conflicts while applying.

If "next" means kvm/next
(i.e.git:// here, the
whole series applies cleanly for me.
HEAD in kvm/next is 9a78197 "KVM: x86: remove unused variable from
kvm_task_switch()" here. Albeit the series was build against kvm/next
at the time as a81aba1 "KVM: VMX: Ignore segment G and D bits when
considering whether we can virtualize" was HEAD in this branch.

Could you please retry and show me the conflicts you get?


  reply	other threads:[~2012-09-04 12:51 UTC|newest]

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-08-29 23:30 [PATCH 0/8] KVM: minor cleanups and optimizations Mathias Krause
2012-08-29 23:30 ` [PATCH 1/8] KVM: x86: minor size optimization Mathias Krause
2012-08-29 23:30 ` [PATCH 2/8] KVM: x86 emulator: use aligned variants of SSE register ops Mathias Krause
2012-09-04 12:09   ` Avi Kivity
2012-09-04 12:13     ` Avi Kivity
2012-09-04 12:51       ` Mathias Krause [this message]
2012-09-05  9:43         ` Avi Kivity
2012-08-29 23:30 ` [PATCH 3/8] KVM: x86: mark opcode tables const Mathias Krause
2012-08-29 23:30 ` [PATCH 4/8] KVM: x86: constify emulate_ops Mathias Krause
2012-08-29 23:30 ` [PATCH 5/8] KVM: x86: constify read_write_emulator_ops Mathias Krause
2012-08-29 23:30 ` [PATCH 6/8] KVM: x86: more constification Mathias Krause
2012-08-29 23:30 ` [PATCH 7/8] KVM: VMX: constify lookup tables Mathias Krause
2012-08-29 23:30 ` [PATCH 8/8] KVM: SVM: " Mathias Krause

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