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Re: [Qemu-devel] [PATCH v3 04/22] target/arm: Treat PMCCNTR as alias of
From: |
Aaron Lindsay |
Subject: |
Re: [Qemu-devel] [PATCH v3 04/22] target/arm: Treat PMCCNTR as alias of PMCCNTR_EL0 |
Date: |
Thu, 12 Apr 2018 12:56:18 -0400 |
User-agent: |
Mutt/1.5.23 (2014-03-12) |
On Apr 12 17:10, Peter Maydell wrote:
> On 16 March 2018 at 20:31, Aaron Lindsay <address@hidden> wrote:
> > They share the same underlying state
> >
> > Signed-off-by: Aaron Lindsay <address@hidden>
> > ---
> > target/arm/helper.c | 2 +-
> > 1 file changed, 1 insertion(+), 1 deletion(-)
> >
> > diff --git a/target/arm/helper.c b/target/arm/helper.c
> > index 5e48982..5634561 100644
> > --- a/target/arm/helper.c
> > +++ b/target/arm/helper.c
> > @@ -1318,7 +1318,7 @@ static const ARMCPRegInfo v7_cp_reginfo[] = {
> > .fieldoffset = offsetof(CPUARMState, cp15.c9_pmselr),
> > .writefn = pmselr_write, .raw_writefn = raw_write, },
> > { .name = "PMCCNTR", .cp = 15, .crn = 9, .crm = 13, .opc1 = 0, .opc2 =
> > 0,
> > - .access = PL0_RW, .resetvalue = 0, .type = ARM_CP_IO,
> > + .access = PL0_RW, .resetvalue = 0, .type = ARM_CP_ALIAS | ARM_CP_IO,
> > .readfn = pmccntr_read, .writefn = pmccntr_write32,
> > .accessfn = pmreg_access_ccntr },
> > { .name = "PMCCNTR_EL0", .state = ARM_CP_STATE_AA64,
> > --
>
> Does this fix an observed bug (presumably migration related),
> or is it just something you saw in code inspection ?
> Worth noting in the commit message if the former.
Purely code inspection. I forget now, but I think I found it after
chasing down some other register issue in the vicinity and noticed this
while digging around.
-Aaron
> Reviewed-by: Peter Maydell <address@hidden>
>
> thanks
> -- PMM
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