perf/x86: Support outputting XMM registers

[mirror_ubuntu-jammy-kernel.git] / arch / x86 / kernel / perf_regs.c

diff --git a/arch/x86/kernel/perf_regs.c b/arch/x86/kernel/perf_regs.c
index c06c4c16c6b69c0d251505fa4c03a658c5f938a6..07c30ee1742542f15923b6e4ab7020b22bc634ad 100644 (file)
--- a/arch/x86/kernel/perf_regs.c
+++ b/arch/x86/kernel/perf_regs.c
@@ -59,18 +59,34 @@ static unsigned int pt_regs_offset[PERF_REG_X86_MAX] = {
 
 u64 perf_reg_value(struct pt_regs *regs, int idx)
 {
+       struct x86_perf_regs *perf_regs;
+
+       if (idx >= PERF_REG_X86_XMM0 && idx < PERF_REG_X86_XMM_MAX) {
+               perf_regs = container_of(regs, struct x86_perf_regs, regs);
+               if (!perf_regs->xmm_regs)
+                       return 0;
+               return perf_regs->xmm_regs[idx - PERF_REG_X86_XMM0];
+       }
+
        if (WARN_ON_ONCE(idx >= ARRAY_SIZE(pt_regs_offset)))
                return 0;
 
        return regs_get_register(regs, pt_regs_offset[idx]);
 }
 
-#define REG_RESERVED (~((1ULL << PERF_REG_X86_MAX) - 1ULL))
-
 #ifdef CONFIG_X86_32
+#define REG_NOSUPPORT ((1ULL << PERF_REG_X86_R8) | \
+                      (1ULL << PERF_REG_X86_R9) | \
+                      (1ULL << PERF_REG_X86_R10) | \
+                      (1ULL << PERF_REG_X86_R11) | \
+                      (1ULL << PERF_REG_X86_R12) | \
+                      (1ULL << PERF_REG_X86_R13) | \
+                      (1ULL << PERF_REG_X86_R14) | \
+                      (1ULL << PERF_REG_X86_R15))
+
 int perf_reg_validate(u64 mask)
 {
-       if (!mask || mask & REG_RESERVED)
+       if (!mask || (mask & REG_NOSUPPORT))
                return -EINVAL;
 
        return 0;
@@ -96,10 +112,7 @@ void perf_get_regs_user(struct perf_regs *regs_user,
 
 int perf_reg_validate(u64 mask)
 {
-       if (!mask || mask & REG_RESERVED)
-               return -EINVAL;
-
-       if (mask & REG_NOSUPPORT)
+       if (!mask || (mask & REG_NOSUPPORT))
                return -EINVAL;
 
        return 0;