Re: [PATCH] linux-user/elfload: Add missing arm64 hwcap values

[Marielle Novastrider]

> On 30 Oct 2023, at 09:52, Peter Maydell <peter.maydell@linaro.org> wrote:
> 
> ...but we don't implement FEAT_MTE3 yet. We would add this feature test
> function, and the GET_FEATURE_ID() line, when we do, but we don't
> need it until then.

Understood.

I made this patch as I noticed the discrepancy between cpuid and hwcap output.

The following code produces the value of 3 on current master, which would be 
erroneous if FEAT_MT3 is unimplemented:

#include <stdint.h>
#include <stdio.h>

int main() {
    uint64_t aa64pfr1;
    __asm__("mrs %0, s3_0_c0_c4_1" : "=r"(aa64pfr1));
    std::printf("%lu\n", (aa64pfr1 >> 8) & 0xf);
    return 0;
}

I can submit another patch to correct this.

- Marielle