diff options
author | Ingo Molnar <mingo@kernel.org> | 2021-03-21 22:16:08 +0100 |
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committer | Ingo Molnar <mingo@kernel.org> | 2021-03-21 22:16:08 +0100 |
commit | ca8778c45e401067cefe2abbfb8b547c30d45908 (patch) | |
tree | c10beaf40adb2bbc6a8933f87ff9da7a5366bf42 /arch/x86/kernel/kvm.c | |
parent | 21d6a7dcbfba5e7b31f4e9d555a9be362578bfc3 (diff) | |
parent | 2c41fab1c60b02626c8153a1806a7a1e5d62aaf1 (diff) |
Merge branch 'linus' into x86/cleanups, to resolve conflict
Conflicts:
arch/x86/kernel/kprobes/ftrace.c
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'arch/x86/kernel/kvm.c')
-rw-r--r-- | arch/x86/kernel/kvm.c | 23 |
1 files changed, 10 insertions, 13 deletions
diff --git a/arch/x86/kernel/kvm.c b/arch/x86/kernel/kvm.c index 5e78e01ca3b4..78bb0fae3982 100644 --- a/arch/x86/kernel/kvm.c +++ b/arch/x86/kernel/kvm.c @@ -836,28 +836,25 @@ static void kvm_kick_cpu(int cpu) static void kvm_wait(u8 *ptr, u8 val) { - unsigned long flags; - if (in_nmi()) return; - local_irq_save(flags); - - if (READ_ONCE(*ptr) != val) - goto out; - /* * halt until it's our turn and kicked. Note that we do safe halt * for irq enabled case to avoid hang when lock info is overwritten * in irq spinlock slowpath and no spurious interrupt occur to save us. */ - if (arch_irqs_disabled_flags(flags)) - halt(); - else - safe_halt(); + if (irqs_disabled()) { + if (READ_ONCE(*ptr) == val) + halt(); + } else { + local_irq_disable(); -out: - local_irq_restore(flags); + if (READ_ONCE(*ptr) == val) + safe_halt(); + + local_irq_enable(); + } } #ifdef CONFIG_X86_32 |