Re: [PATCH v6 3/9] target/i386/mshv: fix various cpuid traversal bugs

["Doru Blânzeanu" <dblanzeanu@linux.microsoft.com>]

On Thu, Apr 16, 2026 at 02:11:10PM +0200, Magnus Kulke wrote:
> - Hardcoded max_leaf was not accurate. We query leaf 0x0 and 0x80000000 to
>   get the actual max leaves
> 
> - On all 0 zeroes on leaf 0x0d, we register 0-63 subleaves with zeros
>   indicating XSAVE is disabled
> 
> - Subleaf 0 was hardcoded, so the Hypervisor returned defaults for other
>   subleaves
> 
> - Subleaf 0 was hardcoded, so we were passing 0 instead of actual subleaf
>   when adding entries. We now pass the correct subleaf value to
>   add_cpuid_entry()
> 
> - Leaves 0x04,0x07,0d,0f,10 weren't marked as subleaf-specific
> 
> Signed-off-by: Magnus Kulke <magnuskulke@linux.microsoft.com>
> Acked-by: Wei Liu <wei.liu@kernel.org>
> ---
>  target/i386/mshv/mshv-cpu.c | 88 +++++++++++++++++++++++++------------
>  1 file changed, 61 insertions(+), 27 deletions(-)

Reviewed-by: Doru Blânzeanu <dblanzeanu@linux.microsoft.com>