On 04.04.2025 01:22, Alexander M. Merritt wrote:
> The new toolchain baseline knows both the XSAVEOPT and CLWB instructions.
> 
> Resolves: https://gitlab.com/xen-project/xen/-/work_items/205
> Signed-off-by: Alexander M. Merritt <alexan...@edera.dev>
> ---
>  xen/arch/x86/arch.mk              |  2 --
>  xen/arch/x86/flushtlb.c           | 28 +---------------------------
>  xen/arch/x86/include/asm/system.h |  7 -------
>  3 files changed, 1 insertion(+), 36 deletions(-)

For XSAVEOPT there's more work to do, even if not connected via 
HAVE_AS_XSAVEOPT.
Look for "xsaveopt" (case-insensitively) in xstate.c. Imo (just like was asked
for for the RDRAND counterpart patch) this wants doing all in one go.

Jan

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