From 0a4e6be9ca17c54817cf814b4b5aa60478c6df27 Mon Sep 17 00:00:00 2001 From: Marcelo Tosatti Date: Mon, 23 Mar 2015 20:21:51 -0300 Subject: x86: kvm: Revert "remove sched notifier for cross-cpu migrations" The following point: 2. per-CPU pvclock time info is updated if the underlying CPU changes. Is not true anymore since "KVM: x86: update pvclock area conditionally, on cpu migration". Add task migration notification back. Problem noticed by Andy Lutomirski. Signed-off-by: Marcelo Tosatti CC: stable@kernel.org # 3.11+ --- arch/x86/include/asm/pvclock.h | 1 + 1 file changed, 1 insertion(+) (limited to 'arch/x86/include/asm/pvclock.h') diff --git a/arch/x86/include/asm/pvclock.h b/arch/x86/include/asm/pvclock.h index d6b078e9fa28..25b1cc07d496 100644 --- a/arch/x86/include/asm/pvclock.h +++ b/arch/x86/include/asm/pvclock.h @@ -95,6 +95,7 @@ unsigned __pvclock_read_cycles(const struct pvclock_vcpu_time_info *src, struct pvclock_vsyscall_time_info { struct pvclock_vcpu_time_info pvti; + u32 migrate_count; } __attribute__((__aligned__(SMP_CACHE_BYTES))); #define PVTI_SIZE sizeof(struct pvclock_vsyscall_time_info) -- cgit v1.2.3