Re: [RFC PATCH 06/12] perf: Support extension of sample_regs

[Peter Zijlstra]

On Wed, Jun 18, 2025 at 06:10:20AM -0400, Liang, Kan wrote:

> Maybe we should use a mask to replace the nr_vectors.
> Because Dave mentioned that the XSAVES may fail.

XSAVE is a pain in the arse :/

> PERF_SAMPLE_SIMD_REGS := {
> 	u64 vectors_mask;
> 	u16 vector_length;
> 	u64 pred_mask;
> 	u16 pred_length;

That is not u64 aligned...

> 	u64 data[];
> }