diff options
author | Alex Shi <alex.shi@linaro.org> | 2018-01-18 15:26:28 +0800 |
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committer | Alex Shi <alex.shi@linaro.org> | 2018-01-18 15:26:28 +0800 |
commit | 2ba51c6d36ee1b43c1f898c6c48ddf3d33e9ab30 (patch) | |
tree | ff3302dc45a91d7bfcaabd37bfa8fa391a954180 /arch/powerpc/perf/core-book3s.c | |
parent | 28610abf4a574c33ca70e3d7b0e523fdede488d1 (diff) | |
parent | 90816cc1d4a1d23efe37b74866c6174dd5eab6b5 (diff) |
Merge remote-tracking branch 'rt-stable/v4.9-rt' into linux-linaro-lsk-v4.9-rtlsk-v4.9-18.02-rt
Conflicts:
arch/arm64/mm/init.c
Diffstat (limited to 'arch/powerpc/perf/core-book3s.c')
-rw-r--r-- | arch/powerpc/perf/core-book3s.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/arch/powerpc/perf/core-book3s.c b/arch/powerpc/perf/core-book3s.c index 72c27b8d2cf3..083f92746951 100644 --- a/arch/powerpc/perf/core-book3s.c +++ b/arch/powerpc/perf/core-book3s.c @@ -401,8 +401,12 @@ static __u64 power_pmu_bhrb_to(u64 addr) int ret; __u64 target; - if (is_kernel_addr(addr)) - return branch_target((unsigned int *)addr); + if (is_kernel_addr(addr)) { + if (probe_kernel_read(&instr, (void *)addr, sizeof(instr))) + return 0; + + return branch_target(&instr); + } /* Userspace: need copy instruction here then translate it */ pagefault_disable(); |