From: Christian Borntraeger <borntraeger@de.ibm.com>
To: kvm <kvm@vger.kernel.org>
Subject: Fwd: [PATCH] kvm-s390: Fix kvm on IBM System z10
Date: Wed, 30 Jul 2008 00:07:29 +0200 [thread overview]
Message-ID: <200807300007.29541.borntraeger@de.ibm.com> (raw)
I forgot to CC the list, here it is.
---------- Weitergeleitete Nachricht ----------
Betreff: [PATCH] kvm-s390: Fix kvm on IBM System z10
Datum: Dienstag, 29. Juli 2008
Von: Christian Borntraeger <borntraeger@de.ibm.com>
An: Avi Kivity <avi@qumranet.com>
From: Christian Borntraeger <borntraeger@de.ibm.com>
The z10 system supports large pages, kvm-s390 doesnt.
Make sure that we dont advertise large pages to avoid the guest crashing as
soon as the guest kernel activates DAT.
Avi, this should go into 2.6.27-rc*.
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
---
arch/s390/kvm/priv.c | 1 +
1 file changed, 1 insertion(+)
Index: kvm/arch/s390/kvm/priv.c
===================================================================
--- kvm.orig/arch/s390/kvm/priv.c
+++ kvm/arch/s390/kvm/priv.c
@@ -158,6 +158,7 @@ static int handle_stfl(struct kvm_vcpu *
vcpu->stat.instruction_stfl++;
facility_list &= ~(1UL<<24); /* no stfle */
+ facility_list &= ~(1UL<<23); /* no large pages */
rc = copy_to_guest(vcpu, offsetof(struct _lowcore, stfl_fac_list),
&facility_list, sizeof(facility_list));
-------------------------------------------------------
reply other threads:[~2008-07-29 22:07 UTC|newest]
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