From 2c5a3a05474011cb84a1b6c45543d56c324cadca Mon Sep 17 00:00:00 2001 From: Nicolai Stange Date: Sun, 29 Jul 2018 13:06:04 +0200 Subject: x86/irq: Let interrupt handlers set kvm_cpu_l1tf_flush_l1d commit ffcba43ff66c7dab34ec700debd491d2a4d319b4 upstream The last missing piece to having vmx_l1d_flush() take interrupts after VMEXIT into account is to set the kvm_cpu_l1tf_flush_l1d per-cpu flag on irq entry. Issue calls to kvm_set_cpu_l1tf_flush_l1d() from entering_irq(), ipi_entering_ack_irq(), smp_reschedule_interrupt() and uv_bau_message_interrupt(). Suggested-by: Paolo Bonzini Signed-off-by: Nicolai Stange Signed-off-by: Thomas Gleixner Signed-off-by: David Woodhouse Signed-off-by: Greg Kroah-Hartman --- arch/x86/kernel/smp.c | 1 + 1 file changed, 1 insertion(+) (limited to 'arch/x86/kernel') diff --git a/arch/x86/kernel/smp.c b/arch/x86/kernel/smp.c index ea217caa731c..2863ad306692 100644 --- a/arch/x86/kernel/smp.c +++ b/arch/x86/kernel/smp.c @@ -271,6 +271,7 @@ __visible void __irq_entry smp_reschedule_interrupt(struct pt_regs *regs) /* * KVM uses this interrupt to force a cpu out of guest mode */ + kvm_set_cpu_l1tf_flush_l1d(); } __visible void __irq_entry smp_trace_reschedule_interrupt(struct pt_regs *regs) -- cgit v1.2.3