From: Jerone Young <jyoung5@us.ibm.com>
To: kvm-ppc@vger.kernel.org
Subject: [kvm-ppc-devel] [PATCH] Make sure guest sees CCR1[TCS] bit from
Date: Fri, 25 Jan 2008 23:00:29 +0000 [thread overview]
Message-ID: <1201302029.12202.1.camel@thinkpad> (raw)
This patch fixes a bug where the wrong clock period is being used by the
guest causing extreme long delays when the kernel makes a call to
udelay.
Signed-off-by: Jerone Young <jyoung5@us.ibm.com>
diff --git a/arch/powerpc/kvm/powerpc.c b/arch/powerpc/kvm/powerpc.c
--- a/arch/powerpc/kvm/powerpc.c
+++ b/arch/powerpc/kvm/powerpc.c
@@ -535,6 +535,9 @@ int kvm_arch_vcpu_setup(struct kvm_vcpu
* before it's programmed its own IVPR. */
vcpu->arch.ivpr = 0x55550000;
+ /* make sure guest sees state of CCR1[TCS] */
+ vcpu->arch.ccr1 = mfspr(SPRN_CCR1);
+
return 0;
}
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