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Date: Mon, 9 Mar 2015 20:31:44 +0100
From: Christoffer Dall <christoffer.dall@linaro.org>
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Subject: Re: [Qemu-devel] [PATCH 5/6] target-arm/kvm64: fix save/restore of
	SPSR regs
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To: Peter Maydell <peter.maydell@linaro.org>
Cc: kvm-devel <kvm@vger.kernel.org>, Marc Zyngier <marc.zyngier@arm.com>, QEMU Developers <qemu-devel@nongnu.org>, Alex =?iso-8859-1?Q?Benn=E9e?= <alex.bennee@linaro.org>, "kvmarm@lists.cs.columbia.edu" <kvmarm@lists.cs.columbia.edu>, arm-mail-list <linux-arm-kernel@lists.infradead.org>

On Mon, Mar 09, 2015 at 10:31:19PM +0900, Peter Maydell wrote:
> On 9 March 2015 at 21:56, Christoffer Dall <christoffer.dall@linaro.org> wrote:
> > this function, however, is not used only when migration, but should
> > generally cover the case where you want to synchronize QEMU's state into
> > KVM's state, right?  So while it may not be harmful in currently
> > supported use cases, is there ever a situation where (is_a64(env) && el
> > == 0) and env->spsr != banked_spsr[el], and where env->spsr is
> > out-of-date?
> 
> If EL == 0 then you can't access any SPSR, so env->spsr is by
> definition out of date.
> 
ok, never mind then.

-Christoffer