diff options
Diffstat (limited to 'arch/x86/events/perf_event.h')
| -rw-r--r-- | arch/x86/events/perf_event.h | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/arch/x86/events/perf_event.h b/arch/x86/events/perf_event.h index 3f7c329374bb..d5e351c1f3c1 100644 --- a/arch/x86/events/perf_event.h +++ b/arch/x86/events/perf_event.h @@ -777,6 +777,27 @@ struct x86_perf_task_context_arch_lbr { struct lbr_entry entries[]; }; +/* + * Add padding to guarantee the 64-byte alignment of the state buffer. + * + * The structure is dynamically allocated. The size of the LBR state may vary + * based on the number of LBR registers. + * + * Do not put anything after the LBR state. + */ +struct x86_perf_task_context_arch_lbr_xsave { + struct x86_perf_task_context_opt opt; + + union { + struct xregs_state xsave; + struct { + struct fxregs_state i387; + struct xstate_header header; + struct arch_lbr_state lbr; + } __attribute__ ((packed, aligned (XSAVE_ALIGNMENT))); + }; +}; + #define x86_add_quirk(func_) \ do { \ static struct x86_pmu_quirk __quirk __initdata = { \ |