From: Paul Mackerras <paulus@samba.org>
To: Alexander Graf <agraf@suse.de>,
kvm-ppc@vger.kernel.org, kvm@vger.kernel.org
Subject: [RFC PATCH 04/10] KVM: PPC: Book3S HV: Flush the correct number of TLB sets on POWER8
Date: Fri, 06 Sep 2013 03:53:59 +0000 [thread overview]
Message-ID: <20130906035359.GQ29710@iris.ozlabs.ibm.com> (raw)
In-Reply-To: <20130906034820.GM29710@iris.ozlabs.ibm.com>
POWER8 has 512 sets in the TLB, compared to 128 for POWER7, so we need
to do more tlbiel instructions when flushing the TLB on POWER8.
Signed-off-by: Paul Mackerras <paulus@samba.org>
---
arch/powerpc/kvm/book3s_hv_rmhandlers.S | 8 +++++++-
1 file changed, 7 insertions(+), 1 deletion(-)
diff --git a/arch/powerpc/kvm/book3s_hv_rmhandlers.S b/arch/powerpc/kvm/book3s_hv_rmhandlers.S
index 1de0b65..612c9c8 100644
--- a/arch/powerpc/kvm/book3s_hv_rmhandlers.S
+++ b/arch/powerpc/kvm/book3s_hv_rmhandlers.S
@@ -667,7 +667,13 @@ END_FTR_SECTION_IFSET(CPU_FTR_ARCH_201)
andc r7,r7,r0
stdcx. r7,0,r6
bne 23b
- li r6,128 /* and flush the TLB */
+ /* Flush the TLB of any entries for this LPID */
+ /* use arch 2.07S as a proxy for POWER8 */
+BEGIN_FTR_SECTION
+ li r6,512 /* POWER8 has 512 sets */
+FTR_SECTION_ELSE
+ li r6,128 /* POWER7 has 128 sets */
+ALT_FTR_SECTION_END_IFSET(CPU_FTR_ARCH_207S)
mtctr r6
li r7,0x800 /* IS field = 0b10 */
ptesync
--
1.8.4.rc3
next prev parent reply other threads:[~2013-09-06 3:53 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-09-06 3:48 [RFC PATCH 0/10] Support POWER8 in HV KVM Paul Mackerras
2013-09-06 3:50 ` [RFC PATCH 01/10] KVM: PPC: Book3S HV: Align physical CPU thread numbers with virtual Paul Mackerras
2013-09-06 3:51 ` [RFC PATCH 02/10] KVM: PPC: Book3S HV: Don't set DABR on POWER8 Paul Mackerras
2013-09-06 3:51 ` [RFC PATCH 03/10] KVM: PPC: Book3S HV: Context-switch new POWER8 SPRs Paul Mackerras
2013-09-06 3:53 ` Paul Mackerras [this message]
2013-09-06 3:54 ` [RFC PATCH 05/10] KVM: PPC: Book3S HV: Add handler for HV facility unavailable Paul Mackerras
2013-11-04 12:48 ` Alexander Graf
2013-09-06 3:55 ` [RFC PATCH 06/10] KVM: PPC: Book3S HV: Implement architecture compatibility modes for POWER8 Paul Mackerras
2013-11-04 12:53 ` Alexander Graf
2013-11-05 3:53 ` Paul Mackerras
2013-11-05 6:06 ` Alexander Graf
2013-11-06 5:15 ` Paul Mackerras
2013-09-06 3:58 ` [RFC PATCH 07/10] KVM: PPC: Book3S HV: Consolidate code that checks reason for wake from nap Paul Mackerras
2013-09-06 3:58 ` [RFC PATCH 08/10] KVM: PPC: Book3S HV: Handle guest using doorbells for IPIs Paul Mackerras
2013-09-06 3:59 ` [RFC PATCH 09/10] KVM: PPC: Book3S HV: Handle new LPCR bits on POWER8 Paul Mackerras
2013-09-06 4:00 ` [RFC PATCH 10/10] KVM: PPC: Book3S HV: Prepare for host using hypervisor doorbells Paul Mackerras
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