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Re: [Qemu-devel] [PATCH 5/6] target-arm/kvm64: fix save/restore of SPSR
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From: |
Christoffer Dall |
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Subject: |
Re: [Qemu-devel] [PATCH 5/6] target-arm/kvm64: fix save/restore of SPSR regs |
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Date: |
Mon, 9 Mar 2015 20:31:44 +0100 |
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User-agent: |
Mutt/1.5.21 (2010-09-15) |
On Mon, Mar 09, 2015 at 10:31:19PM +0900, Peter Maydell wrote:
> On 9 March 2015 at 21:56, Christoffer Dall <address@hidden> 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 out-of-date?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 definition out of date.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