diff options
| author | Philip Guenther <guenther@cvs.openbsd.org> | 2018-05-26 23:09:40 +0000 |
|---|---|---|
| committer | Philip Guenther <guenther@cvs.openbsd.org> | 2018-05-26 23:09:40 +0000 |
| commit | f35c464a8ba1431cf1ee63f28e655cfad95eb984 (patch) | |
| tree | 9df7b3a61f33242f347f4579c02e126a4c5577d3 /sys/arch/amd64 | |
| parent | dfb63d0e95ecc82db0289e6611837c1b2485c4a5 (diff) | |
Only set fpu_save_len once and assert if it's too big or would differ
between CPUs
ok kettenis@ mlarkin@
Diffstat (limited to 'sys/arch/amd64')
| -rw-r--r-- | sys/arch/amd64/amd64/cpu.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/sys/arch/amd64/amd64/cpu.c b/sys/arch/amd64/amd64/cpu.c index 45178186f8f..00bec4839ed 100644 --- a/sys/arch/amd64/amd64/cpu.c +++ b/sys/arch/amd64/amd64/cpu.c @@ -1,4 +1,4 @@ -/* $OpenBSD: cpu.c,v 1.119 2018/05/26 18:49:28 guenther Exp $ */ +/* $OpenBSD: cpu.c,v 1.120 2018/05/26 23:09:39 guenther Exp $ */ /* $NetBSD: cpu.c,v 1.1 2003/04/26 18:39:26 fvdl Exp $ */ /*- @@ -534,7 +534,12 @@ cpu_init(struct cpu_info *ci) xsave_mask |= XCR0_AVX; xsetbv(0, xsave_mask); CPUID_LEAF(0xd, 0, eax, ebx, ecx, edx); - fpu_save_len = ebx; + if (CPU_IS_PRIMARY(ci)) { + fpu_save_len = ebx; + KASSERT(fpu_save_len <= sizeof(struct savefpu)); + } else { + KASSERT(ebx == fpu_save_len); + } } #if NVMM > 0 |