From: Avi Kivity <avi@redhat.com>
To: linux-kernel@vger.kernel.org
Cc: kvm@vger.kernel.org, Avi Kivity <avi@qumranet.com>
Subject: [PATCH 14/40] KVM: Consolidate PIC isr clearing into a function
Date: Tue, 23 Sep 2008 16:46:28 +0300 [thread overview]
Message-ID: <1222177614-26669-15-git-send-email-avi@redhat.com> (raw)
In-Reply-To: <1222177614-26669-1-git-send-email-avi@redhat.com>
From: Avi Kivity <avi@qumranet.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
---
arch/x86/kvm/i8259.c | 18 ++++++++++++------
1 files changed, 12 insertions(+), 6 deletions(-)
diff --git a/arch/x86/kvm/i8259.c b/arch/x86/kvm/i8259.c
index c31164e..55e179a 100644
--- a/arch/x86/kvm/i8259.c
+++ b/arch/x86/kvm/i8259.c
@@ -30,6 +30,11 @@
#include <linux/kvm_host.h>
+static void pic_clear_isr(struct kvm_kpic_state *s, int irq)
+{
+ s->isr &= ~(1 << irq);
+}
+
/*
* set irq level. If an edge is detected, then the IRR is set to 1
*/
@@ -141,11 +146,12 @@ void kvm_pic_set_irq(void *opaque, int irq, int level)
*/
static inline void pic_intack(struct kvm_kpic_state *s, int irq)
{
+ s->isr |= 1 << irq;
if (s->auto_eoi) {
if (s->rotate_on_auto_eoi)
s->priority_add = (irq + 1) & 7;
- } else
- s->isr |= (1 << irq);
+ pic_clear_isr(s, irq);
+ }
/*
* We don't clear a level sensitive interrupt here
*/
@@ -243,7 +249,7 @@ static void pic_ioport_write(void *opaque, u32 addr, u32 val)
priority = get_priority(s, s->isr);
if (priority != 8) {
irq = (priority + s->priority_add) & 7;
- s->isr &= ~(1 << irq);
+ pic_clear_isr(s, irq);
if (cmd == 5)
s->priority_add = (irq + 1) & 7;
pic_update_irq(s->pics_state);
@@ -251,7 +257,7 @@ static void pic_ioport_write(void *opaque, u32 addr, u32 val)
break;
case 3:
irq = val & 7;
- s->isr &= ~(1 << irq);
+ pic_clear_isr(s, irq);
pic_update_irq(s->pics_state);
break;
case 6:
@@ -260,8 +266,8 @@ static void pic_ioport_write(void *opaque, u32 addr, u32 val)
break;
case 7:
irq = val & 7;
- s->isr &= ~(1 << irq);
s->priority_add = (irq + 1) & 7;
+ pic_clear_isr(s, irq);
pic_update_irq(s->pics_state);
break;
default:
@@ -303,7 +309,7 @@ static u32 pic_poll_read(struct kvm_kpic_state *s, u32 addr1)
s->pics_state->pics[0].irr &= ~(1 << 2);
}
s->irr &= ~(1 << ret);
- s->isr &= ~(1 << ret);
+ pic_clear_isr(s, ret);
if (addr1 >> 7 || ret != 2)
pic_update_irq(s->pics_state);
} else {
--
1.6.0.1
next prev parent reply other threads:[~2008-09-23 13:47 UTC|newest]
Thread overview: 41+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-09-23 13:46 [PATCH 00/40] KVM Updates for 2.6.28 merge window (part 1 of 3) Avi Kivity
2008-09-23 13:46 ` [PATCH 01/40] KVM: VMX: Rename misnamed msr bits Avi Kivity
2008-09-23 13:46 ` [PATCH 02/40] KVM: x86: accessors for guest registers Avi Kivity
2008-09-23 13:46 ` [PATCH 03/40] KVM: Move KVM TRACE DEFINITIONS to common header Avi Kivity
2008-09-23 13:46 ` [PATCH 04/40] KVM: Introduce kvm_set_irq to inject interrupts in guests Avi Kivity
2008-09-23 13:46 ` [PATCH 05/40] KVM: MMU: Separate the code for unlinking a shadow page from its parents Avi Kivity
2008-09-23 13:46 ` [PATCH 06/40] KVM: MMU: Simplify kvm_mmu_zap_page() Avi Kivity
2008-09-23 13:46 ` [PATCH 07/40] KVM: Move NMI IRET fault processing to new vmx_complete_interrupts() Avi Kivity
2008-09-23 13:46 ` [PATCH 08/40] KVM: VMX: Move nmi injection failure processing to vm exit path Avi Kivity
2008-09-23 13:46 ` [PATCH 09/40] KVM: Clear exception queue before emulating an instruction Avi Kivity
2008-09-23 13:46 ` [PATCH 10/40] KVM: VMX: Fix pending exception processing Avi Kivity
2008-09-23 13:46 ` [PATCH 11/40] KVM: Add a pending interrupt queue Avi Kivity
2008-09-23 13:46 ` [PATCH 12/40] KVM: VMX: Move interrupt post-processing to vmx_complete_interrupts() Avi Kivity
2008-09-23 13:46 ` [PATCH 13/40] KVM: VMX: Remove redundant check in handle_rmode_exception Avi Kivity
2008-09-23 13:46 ` Avi Kivity [this message]
2008-09-23 13:46 ` [PATCH 15/40] KVM: Consolidate XX_VECTOR defines Avi Kivity
2008-09-23 13:46 ` [PATCH 16/40] KVM: VMX: Reinject real mode exception Avi Kivity
2008-09-23 13:46 ` [PATCH 17/40] KVM: VMX: Unify register save/restore across 32 and 64 bit hosts Avi Kivity
2008-09-23 13:46 ` [PATCH 18/40] KVM: SVM: " Avi Kivity
2008-09-23 13:46 ` [PATCH 19/40] KVM: kvmtrace: Remove use of bit fields in kvm trace structure Avi Kivity
2008-09-23 13:46 ` [PATCH 20/40] KVM: kvmtrace: replace get_cycles with ktime_get v3 Avi Kivity
2008-09-23 13:46 ` [PATCH 21/40] KVM: ppc: enable KVM_TRACE building for powerpc Avi Kivity
2008-09-23 13:46 ` [PATCH 22/40] KVM: ppc: adds trace points for ppc tlb activity Avi Kivity
2008-09-23 13:46 ` [PATCH 23/40] KVM: ppc: trace powerpc instruction emulation Avi Kivity
2008-09-23 13:46 ` [PATCH 24/40] KVM: VMX: Avoid vmwrite(HOST_RSP) when possible Avi Kivity
2008-09-23 13:46 ` [PATCH 25/40] KVM: Ignore DEBUGCTL MSRs with no effect Avi Kivity
2008-09-23 13:46 ` [PATCH 26/40] KVM: ppc: guest breakpoint support Avi Kivity
2008-09-23 13:46 ` [PATCH 27/40] KVM: ppc: Stop saving host TLB state Avi Kivity
2008-09-23 13:46 ` [PATCH 28/40] KVM: ppc: Write only modified shadow entries into the TLB on exit Avi Kivity
2008-09-23 13:46 ` [PATCH 29/40] KVM: powerpc: Map guest userspace with TID=0 mappings Avi Kivity
2008-09-23 13:46 ` [PATCH 30/40] KVM: Add irq ack notifier list Avi Kivity
2008-09-23 13:46 ` [PATCH 31/40] KVM: irq ack notification Avi Kivity
2008-09-23 13:46 ` [PATCH 32/40] KVM: PIT: fix injection logic and count Avi Kivity
2008-09-23 13:46 ` [PATCH 33/40] x86: paravirt: factor out cpu_khz to common code Avi Kivity
2008-09-23 13:46 ` [PATCH 34/40] x86: KVM guest: use paravirt function to calculate cpu khz Avi Kivity
2008-09-23 13:46 ` [PATCH 35/40] KVM: direct mmio pfn check Avi Kivity
2008-09-23 13:46 ` [PATCH 36/40] KVM: pci device assignment Avi Kivity
2008-09-23 13:46 ` [PATCH 37/40] KVM: Reduce kvm stack usage in kvm_arch_vm_ioctl() Avi Kivity
2008-09-23 13:46 ` [PATCH 38/40] KVM: Reduce stack usage in kvm_vcpu_ioctl() Avi Kivity
2008-09-23 13:46 ` [PATCH 39/40] KVM: Reduce stack usage in kvm_arch_vcpu_ioctl() Avi Kivity
2008-09-23 13:46 ` [PATCH 40/40] KVM: Reduce stack usage in kvm_pv_mmu_op() Avi Kivity
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