diff options
| author | Linux Build Service Account <lnxbuild@localhost> | 2018-06-29 12:04:17 -0700 |
|---|---|---|
| committer | Gerrit - the friendly Code Review server <code-review@localhost> | 2018-06-29 12:04:17 -0700 |
| commit | 25c69bf35b1a493ab8c8aca28afd9bb9d0d5d26c (patch) | |
| tree | b186b8c104e3e94d06dc31d8305c47d6a8995194 /arch/x86/kernel/hw_breakpoint.c | |
| parent | ae8a7e6903c2a6201226b3aabb0d7673c6a5f042 (diff) | |
| parent | 563a330876f64f5289d0886857947c7bd469f907 (diff) | |
Merge "Merge android-4.4.138 (07c0138) into msm-4.4"
Diffstat (limited to 'arch/x86/kernel/hw_breakpoint.c')
| -rw-r--r-- | arch/x86/kernel/hw_breakpoint.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/arch/x86/kernel/hw_breakpoint.c b/arch/x86/kernel/hw_breakpoint.c index 50a3fad5b89f..2bcfb5f2bc44 100644 --- a/arch/x86/kernel/hw_breakpoint.c +++ b/arch/x86/kernel/hw_breakpoint.c @@ -300,6 +300,10 @@ static int arch_build_bp_info(struct perf_event *bp) return -EINVAL; if (bp->attr.bp_addr & (bp->attr.bp_len - 1)) return -EINVAL; + + if (!boot_cpu_has(X86_FEATURE_BPEXT)) + return -EOPNOTSUPP; + /* * It's impossible to use a range breakpoint to fake out * user vs kernel detection because bp_len - 1 can't @@ -307,8 +311,6 @@ static int arch_build_bp_info(struct perf_event *bp) * breakpoints, then we'll have to check for kprobe-blacklisted * addresses anywhere in the range. */ - if (!cpu_has_bpext) - return -EOPNOTSUPP; info->mask = bp->attr.bp_len - 1; info->len = X86_BREAKPOINT_LEN_1; } |