On Mon, 14 Dec 2020 at 18:11, Rebecca Cran wrote:
>
> On 12/11/20 2:37 PM, Peter Maydell wrote:
> > On Fri, 11 Dec 2020 at 19:51, Richard Henderson
> > wrote:
> >> I'll let Peter weigh in, but I think it makes sense to move the SS bit
> >> somewhere else (e.g. env->pstate) and merge it into SPSR_
On 12/11/20 2:37 PM, Peter Maydell wrote:
On Fri, 11 Dec 2020 at 19:51, Richard Henderson
wrote:
I'll let Peter weigh in, but I think it makes sense to move the SS bit
somewhere else (e.g. env->pstate) and merge it into SPSR_ELx upon interrupt.
While what we're doing here is convenient, it's no
On Fri, 11 Dec 2020 at 19:51, Richard Henderson
wrote:
>
> On 12/11/20 1:33 PM, Rebecca Cran wrote:
> > Is the comment in target/arm/op_helper.c:397 still relevant?
> >
> > uint32_t HELPER(cpsr_read)(CPUARMState *env)
> > {
> > /*
> > * We store the ARMv8 PSTATE.SS bit in env->uncached_cp
On 12/11/20 7:08 AM, Richard Henderson wrote:
Alternately, or additionally, TCG is outside of the security domain (only
hardware accelerators like KVM are inside), and so we may implement this as a
NOP.
Thanks for the feedback, I'll send a v2 patch next week.
Is the comment in target/arm/op_
On 12/11/20 1:33 PM, Rebecca Cran wrote:
> Is the comment in target/arm/op_helper.c:397 still relevant?
>
> uint32_t HELPER(cpsr_read)(CPUARMState *env)
> {
> /*
> * We store the ARMv8 PSTATE.SS bit in env->uncached_cpsr.
> * This is convenient for populating SPSR_ELx, but must be
>
On 12/10/20 11:13 PM, Rebecca Cran wrote:
> Add support for FEAT_DIT. DIT (Data Independent Timing) is a required
> feature for ARMv8.4. Since virtual machine execution is largely
> nondeterministic, it's implemented as a NOP.
Alternately, or additionally, TCG is outside of the security domain (on
Add support for FEAT_DIT. DIT (Data Independent Timing) is a required
feature for ARMv8.4. Since virtual machine execution is largely
nondeterministic, it's implemented as a NOP.
Signed-off-by: Rebecca Cran
---
target/arm/cpu.h | 20 +-
target/arm/helper.c| 28 +
