On Tue, Sep 12, 2023 at 05:36:50PM +0530, Ani Sinha wrote:
> PAE mode in x86 supports 36 bit address space. Check the PAE CPUID on the
> guest processor and set phys_bits to 36 if PAE feature is set. This is in
> addition to checking the presence of PSE36 CPUID feature for setting 36 bit
> phys_bits.
>
> Signed-off-by: Ani Sinha <anisi...@redhat.com>
Acked-by: Michael S. Tsirkin <m...@redhat.com>
who's applying this?
> ---
> target/i386/cpu.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> Note: Not sure what tests I should be running in order to make sure I am
> not breaking any guest OSes. Usual qtests pass.
>
> diff --git a/target/i386/cpu.c b/target/i386/cpu.c
> index 24ee67b42d..f3a5c99117 100644
> --- a/target/i386/cpu.c
> +++ b/target/i386/cpu.c
> @@ -7375,7 +7375,7 @@ static void x86_cpu_realizefn(DeviceState *dev, Error
> **errp)
> return;
> }
>
> - if (env->features[FEAT_1_EDX] & CPUID_PSE36) {
> + if (env->features[FEAT_1_EDX] & (CPUID_PSE36 | CPUID_PAE)) {
> cpu->phys_bits = 36;
> } else {
> cpu->phys_bits = 32;
> --
> 2.39.1
