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Diffstat (limited to 'arch/x86/kernel/perf_regs.c')
-rw-r--r--arch/x86/kernel/perf_regs.c7
1 files changed, 5 insertions, 2 deletions
diff --git a/arch/x86/kernel/perf_regs.c b/arch/x86/kernel/perf_regs.c
index 07c30ee17425..bb7e1132290b 100644
--- a/arch/x86/kernel/perf_regs.c
+++ b/arch/x86/kernel/perf_regs.c
@@ -74,6 +74,9 @@ u64 perf_reg_value(struct pt_regs *regs, int idx)
return regs_get_register(regs, pt_regs_offset[idx]);
}
+#define PERF_REG_X86_RESERVED (((1ULL << PERF_REG_X86_XMM0) - 1) & \
+ ~((1ULL << PERF_REG_X86_MAX) - 1))
+
#ifdef CONFIG_X86_32
#define REG_NOSUPPORT ((1ULL << PERF_REG_X86_R8) | \
(1ULL << PERF_REG_X86_R9) | \
@@ -86,7 +89,7 @@ u64 perf_reg_value(struct pt_regs *regs, int idx)
int perf_reg_validate(u64 mask)
{
- if (!mask || (mask & REG_NOSUPPORT))
+ if (!mask || (mask & (REG_NOSUPPORT | PERF_REG_X86_RESERVED)))
return -EINVAL;
return 0;
@@ -112,7 +115,7 @@ void perf_get_regs_user(struct perf_regs *regs_user,
int perf_reg_validate(u64 mask)
{
- if (!mask || (mask & REG_NOSUPPORT))
+ if (!mask || (mask & (REG_NOSUPPORT | PERF_REG_X86_RESERVED)))
return -EINVAL;
return 0;