On Thu, Feb 17, 2022 at 02:44:10PM +0100, Paolo Bonzini wrote:
> On 2/17/22 06:58, Yang Zhong wrote:
> >>+
> >>+if ((mask & XSTATE_XTILE_DATA_MASK) == XSTATE_XTILE_DATA_MASK) {
> >>+bitmask = kvm_arch_get_supported_cpuid(s, 0xd, 0, R_EAX);
> >>+if (!(bitmask &
On 2/17/22 06:58, Yang Zhong wrote:
+
+if ((mask & XSTATE_XTILE_DATA_MASK) == XSTATE_XTILE_DATA_MASK) {
+bitmask = kvm_arch_get_supported_cpuid(s, 0xd, 0, R_EAX);
+if (!(bitmask & XSTATE_XTILE_DATA_MASK)) {
Paolo, last time you suggested below changes for here:
rc =
On Wed, Feb 16, 2022 at 10:04:29PM -0800, Yang Zhong wrote:
> Kernel allocates 4K xstate buffer by default. For XSAVE features
> which require large state component (e.g. AMX), Linux kernel
> dynamically expands the xstate buffer only after the process has
> acquired the necessary permissions.
Kernel allocates 4K xstate buffer by default. For XSAVE features
which require large state component (e.g. AMX), Linux kernel
dynamically expands the xstate buffer only after the process has
acquired the necessary permissions. Those are called dynamically-
enabled XSAVE features (or dynamic
