diff options
| author | Thomas Gleixner <tglx@linutronix.de> | 2020-05-21 22:05:42 +0200 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2020-06-11 15:15:15 +0200 |
| commit | 9c3b1f4975c46fc2932fd6d53e63c14f0ddf985f (patch) | |
| tree | d4d168ef93b060a87c13c5350602dab47b652164 /arch/x86/kernel/irq.c | |
| parent | 720909a7abd351535bfb485a0ecce03c2e4467e2 (diff) | |
x86/entry: Convert KVM vectors to IDTENTRY_SYSVEC*
Convert KVM specific system vectors to IDTENTRY_SYSVEC*:
The two empty stub handlers which only increment the stats counter do no
need to run on the interrupt stack. Use IDTENTRY_SYSVEC_SIMPLE for them.
The wakeup handler does more work and runs on the interrupt stack.
None of these handlers need to save and restore the irq_regs pointer.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Acked-by: Paolo Bonzini <pbonzini@redhat.com>
Acked-by: Andy Lutomirski <luto@kernel.org>
Link: https://lore.kernel.org/r/20200521202119.555715519@linutronix.de
Diffstat (limited to 'arch/x86/kernel/irq.c')
| -rw-r--r-- | arch/x86/kernel/irq.c | 24 |
1 files changed, 6 insertions, 18 deletions
diff --git a/arch/x86/kernel/irq.c b/arch/x86/kernel/irq.c index 7e3005274f83..181060247e3c 100644 --- a/arch/x86/kernel/irq.c +++ b/arch/x86/kernel/irq.c @@ -298,41 +298,29 @@ EXPORT_SYMBOL_GPL(kvm_set_posted_intr_wakeup_handler); /* * Handler for POSTED_INTERRUPT_VECTOR. */ -__visible void smp_kvm_posted_intr_ipi(struct pt_regs *regs) +DEFINE_IDTENTRY_SYSVEC_SIMPLE(sysvec_kvm_posted_intr_ipi) { - struct pt_regs *old_regs = set_irq_regs(regs); - - entering_ack_irq(); + ack_APIC_irq(); inc_irq_stat(kvm_posted_intr_ipis); - exiting_irq(); - set_irq_regs(old_regs); } /* * Handler for POSTED_INTERRUPT_WAKEUP_VECTOR. */ -__visible void smp_kvm_posted_intr_wakeup_ipi(struct pt_regs *regs) +DEFINE_IDTENTRY_SYSVEC(sysvec_kvm_posted_intr_wakeup_ipi) { - struct pt_regs *old_regs = set_irq_regs(regs); - - entering_ack_irq(); + ack_APIC_irq(); inc_irq_stat(kvm_posted_intr_wakeup_ipis); kvm_posted_intr_wakeup_handler(); - exiting_irq(); - set_irq_regs(old_regs); } /* * Handler for POSTED_INTERRUPT_NESTED_VECTOR. */ -__visible void smp_kvm_posted_intr_nested_ipi(struct pt_regs *regs) +DEFINE_IDTENTRY_SYSVEC_SIMPLE(sysvec_kvm_posted_intr_nested_ipi) { - struct pt_regs *old_regs = set_irq_regs(regs); - - entering_ack_irq(); + ack_APIC_irq(); inc_irq_stat(kvm_posted_intr_nested_ipis); - exiting_irq(); - set_irq_regs(old_regs); } #endif |