* [PATCH] hw/arm/boot: fix SVE for EL3 direct kernel boot
@ 2020-10-30 15:15 remi
2020-10-30 18:55 ` Richard Henderson
0 siblings, 1 reply; 3+ messages in thread
From: remi @ 2020-10-30 15:15 UTC (permalink / raw)
To: qemu-arm; +Cc: qemu-devel
From: Rémi Denis-Courmont <remi.denis.courmont@huawei.com>
When booting a CPU with EL3 using the -kernel flag, set up CPTR_EL3 so
that SVE will not trap to EL3.
Signed-off-by: Rémi Denis-Courmont <remi.denis.courmont@huawei.com>
---
hw/arm/boot.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/hw/arm/boot.c b/hw/arm/boot.c
index 3e9816af80..cf97600a91 100644
--- a/hw/arm/boot.c
+++ b/hw/arm/boot.c
@@ -742,6 +742,9 @@ static void do_cpu_reset(void *opaque)
if (cpu_isar_feature(aa64_mte, cpu)) {
env->cp15.scr_el3 |= SCR_ATA;
}
+ if (cpu_isar_feature(aa64_sve, cpu)) {
+ env->cp15.cptr_el[3] |= CPTR_EZ;
+ }
/* AArch64 kernels never boot in secure mode */
assert(!info->secure_boot);
/* This hook is only supported for AArch32 currently:
--
2.29.1
^ permalink raw reply related [flat|nested] 3+ messages in thread
* Re: [PATCH] hw/arm/boot: fix SVE for EL3 direct kernel boot
2020-10-30 15:15 [PATCH] hw/arm/boot: fix SVE for EL3 direct kernel boot remi
@ 2020-10-30 18:55 ` Richard Henderson
2020-11-02 11:43 ` Peter Maydell
0 siblings, 1 reply; 3+ messages in thread
From: Richard Henderson @ 2020-10-30 18:55 UTC (permalink / raw)
To: remi, qemu-arm; +Cc: qemu-devel
On 10/30/20 8:15 AM, remi@remlab.net wrote:
> From: Rémi Denis-Courmont <remi.denis.courmont@huawei.com>
>
> When booting a CPU with EL3 using the -kernel flag, set up CPTR_EL3 so
> that SVE will not trap to EL3.
>
> Signed-off-by: Rémi Denis-Courmont <remi.denis.courmont@huawei.com>
> ---
> hw/arm/boot.c | 3 +++
> 1 file changed, 3 insertions(+)
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
r~
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [PATCH] hw/arm/boot: fix SVE for EL3 direct kernel boot
2020-10-30 18:55 ` Richard Henderson
@ 2020-11-02 11:43 ` Peter Maydell
0 siblings, 0 replies; 3+ messages in thread
From: Peter Maydell @ 2020-11-02 11:43 UTC (permalink / raw)
To: Richard Henderson; +Cc: qemu-arm, QEMU Developers, Rémi Denis-Courmont
On Fri, 30 Oct 2020 at 18:56, Richard Henderson
<richard.henderson@linaro.org> wrote:
>
> On 10/30/20 8:15 AM, remi@remlab.net wrote:
> > From: Rémi Denis-Courmont <remi.denis.courmont@huawei.com>
> >
> > When booting a CPU with EL3 using the -kernel flag, set up CPTR_EL3 so
> > that SVE will not trap to EL3.
> >
> > Signed-off-by: Rémi Denis-Courmont <remi.denis.courmont@huawei.com>
> > ---
> > hw/arm/boot.c | 3 +++
> > 1 file changed, 3 insertions(+)
>
> Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Applied to target-arm.next, thanks.
-- PMM
^ permalink raw reply [flat|nested] 3+ messages in thread
end of thread, other threads:[~2020-11-02 11:44 UTC | newest]
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2020-10-30 15:15 [PATCH] hw/arm/boot: fix SVE for EL3 direct kernel boot remi
2020-10-30 18:55 ` Richard Henderson
2020-11-02 11:43 ` Peter Maydell
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