[PATCH 5/6] target-arm/kvm64: fix save/restore of SPSR regs

Alex Bennée alex.bennee at linaro.org
Mon Mar 9 09:25:58 PDT 2015

Peter Maydell <peter.maydell at linaro.org> writes:

> On 9 March 2015 at 21:56, Christoffer Dall <christoffer.dall at 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 out-of-date?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 definition out of date.

Indeed and in v2 the whole thing is wrapped in if (el > 0)

> -- PMM

Alex Bennée

More information about the linux-arm-kernel mailing list