Re: [PATCH v3] target/i386/hvf: add vmware-cpuid-freq cpu feature

[Roman Bolshakov <r.bolshakov@yadro.com>]

On Fri, Jan 22, 2021 at 06:05:18PM +0300, yaroshchuk2000@gmail.com wrote:
> From: Vladislav Yaroshchuk <yaroshchuk2000@gmail.com>
> 
> For `-accel hvf` cpu_x86_cpuid() is wrapped with hvf_cpu_x86_cpuid() to
> add paravirtualization cpuid leaf 0x40000010
> https://lkml.org/lkml/2008/10/1/246
> 
> Leaf 0x40000010, Timing Information:
> EAX: (Virtual) TSC frequency in kHz.
> EBX: (Virtual) Bus (local apic timer) frequency in kHz.
> ECX, EDX: RESERVED (Per above, reserved fields are set to zero).
> 
> On macOS TSC and APIC Bus frequencies can be readed by sysctl call with
> names `machdep.tsc.frequency` and `hw.busfrequency`
> 
> This options is required for Darwin-XNU guest to be synchronized with
> host
> 
> Leaf 0x40000000 not exposes HVF leaving hypervisor signature empty
> 
> Signed-off-by: Vladislav Yaroshchuk <yaroshchuk2000@gmail.com>
> ---
>  target/i386/hvf/hvf.c | 96 ++++++++++++++++++++++++++++++++++++++++++-
>  1 file changed, 95 insertions(+), 1 deletion(-)
> 

Queued, thanks!

-Roman