diff options
| author | Linus Torvalds <torvalds@linux-foundation.org> | 2015-07-29 10:23:14 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2015-07-29 10:23:14 -0700 |
| commit | 86ea07ca846a7c352f39dd0b7d81f15f403c7db8 (patch) | |
| tree | 0a9e647423a21ea9c948241b9457de97f6d6980b | |
| parent | d9065f44be579a1dcf572be717ba8b1ce342ebd6 (diff) | |
| parent | 0b991f5cdcd6201e5401f83ca3a672343c3bfc49 (diff) | |
Pull s390 fixes from Martin Schwidefsky:
"Two bug fixes:
- fix a crash on pre-z10 hardware due to cache-info
- fix an issue with classic BPF programs in the eBPF JIT"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux:
s390/cachinfo: add missing facility check to init_cache_level()
s390/bpf: clear correct BPF accumulator register
| -rw-r--r-- | arch/s390/kernel/cache.c | 2 | ||||
| -rw-r--r-- | arch/s390/net/bpf_jit_comp.c | 14 |
2 files changed, 9 insertions, 7 deletions
diff --git a/arch/s390/kernel/cache.c b/arch/s390/kernel/cache.c index bff5e3b6d822..8ba32436effe 100644 --- a/arch/s390/kernel/cache.c +++ b/arch/s390/kernel/cache.c @@ -138,6 +138,8 @@ int init_cache_level(unsigned int cpu) union cache_topology ct; enum cache_type ctype; + if (!test_facility(34)) + return -EOPNOTSUPP; if (!this_cpu_ci) return -EINVAL; ct.raw = ecag(EXTRACT_TOPOLOGY, 0, 0); diff --git a/arch/s390/net/bpf_jit_comp.c b/arch/s390/net/bpf_jit_comp.c index fee782acc2ee..8d2e5165865f 100644 --- a/arch/s390/net/bpf_jit_comp.c +++ b/arch/s390/net/bpf_jit_comp.c @@ -448,13 +448,13 @@ static void bpf_jit_prologue(struct bpf_jit *jit) EMIT6_DISP_LH(0xe3000000, 0x0004, REG_SKB_DATA, REG_0, BPF_REG_1, offsetof(struct sk_buff, data)); } - /* BPF compatibility: clear A (%b7) and X (%b8) registers */ - if (REG_SEEN(BPF_REG_7)) - /* lghi %b7,0 */ - EMIT4_IMM(0xa7090000, BPF_REG_7, 0); - if (REG_SEEN(BPF_REG_8)) - /* lghi %b8,0 */ - EMIT4_IMM(0xa7090000, BPF_REG_8, 0); + /* BPF compatibility: clear A (%b0) and X (%b7) registers */ + if (REG_SEEN(BPF_REG_A)) + /* lghi %ba,0 */ + EMIT4_IMM(0xa7090000, BPF_REG_A, 0); + if (REG_SEEN(BPF_REG_X)) + /* lghi %bx,0 */ + EMIT4_IMM(0xa7090000, BPF_REG_X, 0); } /* |