From: Avi Kivity <avi@redhat.com>
To: kvm@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Subject: [PATCH 23/40] KVM: powerpc: Remove AGGRESSIVE_DEC
Date: Wed, 10 Feb 2010 19:22:52 +0200 [thread overview]
Message-ID: <1265822589-11155-24-git-send-email-avi@redhat.com> (raw)
In-Reply-To: <1265822589-11155-1-git-send-email-avi@redhat.com>
From: Alexander Graf <agraf@suse.de>
Because we now emulate the DEC interrupt according to real life behavior,
there's no need to keep the AGGRESSIVE_DEC hack around.
Let's just remove it.
Signed-off-by: Alexander Graf <agraf@suse.de>
Acked-by: Acked-by: Hollis Blanchard <hollis@penguinppc.org>
Signed-off-by: Avi Kivity <avi@redhat.com>
---
arch/powerpc/kvm/book3s.c | 16 +---------------
1 files changed, 1 insertions(+), 15 deletions(-)
diff --git a/arch/powerpc/kvm/book3s.c b/arch/powerpc/kvm/book3s.c
index fd3ad6c..803505d 100644
--- a/arch/powerpc/kvm/book3s.c
+++ b/arch/powerpc/kvm/book3s.c
@@ -34,12 +34,6 @@
/* #define EXIT_DEBUG */
/* #define EXIT_DEBUG_SIMPLE */
-/* Without AGGRESSIVE_DEC we only fire off a DEC interrupt when DEC turns 0.
- * When set, we retrigger a DEC interrupt after that if DEC <= 0.
- * PPC32 Linux runs faster without AGGRESSIVE_DEC, PPC64 Linux requires it. */
-
-/* #define AGGRESSIVE_DEC */
-
struct kvm_stats_debugfs_item debugfs_entries[] = {
{ "exits", VCPU_STAT(sum_exits) },
{ "mmio", VCPU_STAT(mmio_exits) },
@@ -81,7 +75,7 @@ void kvmppc_core_vcpu_put(struct kvm_vcpu *vcpu)
to_book3s(vcpu)->slb_shadow_max = get_paca()->kvm_slb_max;
}
-#if defined(AGGRESSIVE_DEC) || defined(EXIT_DEBUG)
+#if defined(EXIT_DEBUG)
static u32 kvmppc_get_dec(struct kvm_vcpu *vcpu)
{
u64 jd = mftb() - vcpu->arch.dec_jiffies;
@@ -273,14 +267,6 @@ void kvmppc_core_deliver_interrupts(struct kvm_vcpu *vcpu)
unsigned long *pending = &vcpu->arch.pending_exceptions;
unsigned int priority;
- /* XXX be more clever here - no need to mftb() on every entry */
- /* Issue DEC again if it's still active */
-#ifdef AGGRESSIVE_DEC
- if (vcpu->arch.msr & MSR_EE)
- if (kvmppc_get_dec(vcpu) & 0x80000000)
- kvmppc_core_queue_dec(vcpu);
-#endif
-
#ifdef EXIT_DEBUG
if (vcpu->arch.pending_exceptions)
printk(KERN_EMERG "KVM: Check pending: %lx\n", vcpu->arch.pending_exceptions);
--
1.6.5.3
next prev parent reply other threads:[~2010-02-10 17:29 UTC|newest]
Thread overview: 41+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-02-10 17:22 [PATCH 00/40] KVM updates for the 2.6.34 merge window (batch 1/4) Avi Kivity
2010-02-10 17:22 ` [PATCH 01/40] KVM: x86: make double/triple fault promotion generic to all exceptions Avi Kivity
2010-02-10 17:22 ` [PATCH 02/40] KVM: x86: raise TSS exception for NULL CS and SS segments Avi Kivity
2010-02-10 17:22 ` [PATCH 03/40] KVM: MMU: Report spte not found in rmap before BUG() Avi Kivity
2010-02-10 17:22 ` [PATCH 04/40] KVM: VMX: Trap and invalid MWAIT/MONITOR instruction Avi Kivity
2010-02-10 17:22 ` [PATCH 05/40] KVM: VMX: Move some cr[04] related constants to vmx.c Avi Kivity
2010-02-10 17:22 ` [PATCH 06/40] KVM: Add accessor for reading cr4 (or some bits of cr4) Avi Kivity
2010-02-10 17:22 ` [PATCH 07/40] KVM: VMX: Make guest cr4 mask more conservative Avi Kivity
2010-02-10 17:22 ` [PATCH 08/40] KVM: VMX: When using ept, allow the guest to own cr4.pge Avi Kivity
2010-02-10 17:22 ` [PATCH 09/40] KVM: VMX: Fold ept_update_paging_mode_cr4() into its caller Avi Kivity
2010-02-10 17:22 ` [PATCH 10/40] KVM: VMX: Remove redundant variable Avi Kivity
2010-02-10 17:22 ` [PATCH 11/40] KVM: Extended shared_msr_global to per CPU Avi Kivity
2010-02-10 17:22 ` [PATCH 12/40] x86: Raise vsyscall priority on hotplug notifier chain Avi Kivity
2010-02-10 17:22 ` [PATCH 13/40] KVM: Add cpuid_update() callback to kvm_x86_ops Avi Kivity
2010-02-10 17:22 ` [PATCH 14/40] KVM: VMX: Add instruction rdtscp support for guest Avi Kivity
2010-02-10 17:22 ` [PATCH 15/40] KVM: SVM: Adjust tsc_offset only if tsc_unstable Avi Kivity
2010-02-10 17:22 ` [PATCH 16/40] KVM: Disentangle mmu notifiers and coalesced_mmio registration Avi Kivity
2010-02-10 17:22 ` [PATCH 17/40] KVM: Add include guards for coalesced_mmio.h Avi Kivity
2010-02-10 17:22 ` [PATCH 18/40] KVM: Remove ifdefs from mmu notifier initialization Avi Kivity
2010-02-10 17:22 ` [PATCH 19/40] KVM: Add KVM_MMIO kconfig item Avi Kivity
2010-02-10 17:22 ` [PATCH 20/40] KVM: Simplify coalesced mmio initialization Avi Kivity
2010-02-10 17:22 ` [PATCH 21/40] KVM: powerpc: Move vector to irqprio resolving to separate function Avi Kivity
2010-02-10 17:22 ` [PATCH 22/40] KVM: powerpc: Improve DEC handling Avi Kivity
2010-02-10 17:22 ` Avi Kivity [this message]
2010-02-10 17:22 ` [PATCH 24/40] KVM: powerpc: Change maintainer Avi Kivity
2010-02-10 17:22 ` [PATCH 25/40] KVM: trivial document fixes Avi Kivity
2010-02-10 17:22 ` [PATCH 26/40] KVM: modify memslots layout in struct kvm Avi Kivity
2010-02-10 17:22 ` [PATCH 27/40] KVM: modify alias layout in x86s struct kvm_arch Avi Kivity
2010-02-10 17:22 ` [PATCH 28/40] KVM: split kvm_arch_set_memory_region into prepare and commit Avi Kivity
2010-02-10 17:22 ` [PATCH 29/40] KVM: introduce gfn_to_pfn_memslot Avi Kivity
2010-02-10 17:22 ` [PATCH 30/40] KVM: use gfn_to_pfn_memslot in kvm_iommu_map_pages Avi Kivity
2010-02-10 17:23 ` [PATCH 31/40] KVM: introduce kvm->srcu and convert kvm_set_memory_region to SRCU update Avi Kivity
2010-02-10 17:23 ` [PATCH 32/40] KVM: use SRCU for dirty log Avi Kivity
2010-02-10 17:23 ` [PATCH 33/40] KVM: x86: switch kvm_set_memory_alias to SRCU update Avi Kivity
2010-02-10 17:23 ` [PATCH 34/40] KVM: convert io_bus to SRCU Avi Kivity
2010-02-10 17:23 ` [PATCH 35/40] KVM: switch vcpu context to use SRCU Avi Kivity
2010-02-10 17:23 ` [PATCH 36/40] KVM: convert slots_lock to a mutex Avi Kivity
2010-02-10 17:23 ` [PATCH 37/40] KVM: Bump maximum vcpu count to 64 Avi Kivity
2010-02-10 17:23 ` [PATCH 38/40] KVM: Fill out ftrace exit reason strings Avi Kivity
2010-02-10 17:23 ` [PATCH 39/40] KVM: avoid taking ioapic mutex for non-ioapic EOIs Avi Kivity
2010-02-10 17:23 ` [PATCH 40/40] KVM: PPC: Fix typo in rebolting code Avi Kivity
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