lkml.org 
[lkml]   [2010]   [Feb]   [10]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH 23/40] KVM: powerpc: Remove AGGRESSIVE_DEC
Date
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


\
 
 \ /
  Last update: 2010-02-10 18:33    [W:0.104 / U:6.860 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site