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| author | Ingo Molnar <mingo@kernel.org> | 2017-11-14 07:21:44 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2017-11-14 07:21:44 +0100 |
| commit | 050ab10a645097e47c01cfab3ccf24167e9b266b (patch) | |
| tree | 686b17c63933f187305a87fba696415dccd032ae /arch/x86/kernel/paravirt.c | |
| parent | 9eb719855f6c9b21eb5889d9ac2ca1c60527ad89 (diff) | |
| parent | b29c6ef7bb1257853c1e31616d84f55e561cf631 (diff) | |
| download | op-kernel-dev-050ab10a645097e47c01cfab3ccf24167e9b266b.zip op-kernel-dev-050ab10a645097e47c01cfab3ccf24167e9b266b.tar.gz | |
Merge branch 'linus' into core/objtool, to pick up dependent commits
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'arch/x86/kernel/paravirt.c')
| -rw-r--r-- | arch/x86/kernel/paravirt.c | 14 |
1 files changed, 12 insertions, 2 deletions
diff --git a/arch/x86/kernel/paravirt.c b/arch/x86/kernel/paravirt.c index 19a3e8f..041096b 100644 --- a/arch/x86/kernel/paravirt.c +++ b/arch/x86/kernel/paravirt.c @@ -115,8 +115,18 @@ unsigned paravirt_patch_jmp(void *insnbuf, const void *target, return 5; } -/* Neat trick to map patch type back to the call within the - * corresponding structure. */ +DEFINE_STATIC_KEY_TRUE(virt_spin_lock_key); + +void __init native_pv_lock_init(void) +{ + if (!static_cpu_has(X86_FEATURE_HYPERVISOR)) + static_branch_disable(&virt_spin_lock_key); +} + +/* + * Neat trick to map patch type back to the call within the + * corresponding structure. + */ static void *get_call_destination(u8 type) { struct paravirt_patch_template tmpl = { |
