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From: Alexander Graf <agraf@suse.de>
To: kvm-ppc@vger.kernel.org
Cc: linuxppc-dev <linuxppc-dev@lists.ozlabs.org>,
	KVM list <kvm@vger.kernel.org>
Subject: [PATCH 09/27] KVM: PPC: Add PV guest scratch registers
Date: Thu, 29 Jul 2010 14:47:50 +0200	[thread overview]
Message-ID: <1280407688-9815-10-git-send-email-agraf@suse.de> (raw)
In-Reply-To: <1280407688-9815-1-git-send-email-agraf@suse.de>

While running in hooked code we need to store register contents out because
we must not clobber any registers.

So let's add some fields to the shared page we can just happily write to.

Signed-off-by: Alexander Graf <agraf@suse.de>
---
 arch/powerpc/include/asm/kvm_para.h |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)

diff --git a/arch/powerpc/include/asm/kvm_para.h b/arch/powerpc/include/asm/kvm_para.h
index 4577e7b..5be00c9 100644
--- a/arch/powerpc/include/asm/kvm_para.h
+++ b/arch/powerpc/include/asm/kvm_para.h
@@ -24,6 +24,9 @@
 #include <linux/of.h>
 
 struct kvm_vcpu_arch_shared {
+	__u64 scratch1;
+	__u64 scratch2;
+	__u64 scratch3;
 	__u64 critical;		/* Guest may not get interrupts if == r1 */
 	__u64 sprg0;
 	__u64 sprg1;
-- 
1.6.0.2

  parent reply	other threads:[~2010-07-29 12:48 UTC|newest]

Thread overview: 40+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-07-29 12:47 [PATCH 00/27] KVM PPC PV framework v3 Alexander Graf
2010-07-29 12:47 ` [PATCH 01/27] KVM: PPC: Introduce shared page Alexander Graf
2010-08-05 17:05   ` Hollis Blanchard
2010-07-29 12:47 ` [PATCH 02/27] KVM: PPC: Convert MSR to " Alexander Graf
2010-07-29 12:47 ` [PATCH 03/27] KVM: PPC: Convert DSISR " Alexander Graf
2010-07-29 12:47 ` [PATCH 04/27] KVM: PPC: Convert DAR " Alexander Graf
2010-07-29 12:47 ` [PATCH 05/27] KVM: PPC: Convert SRR0 and SRR1 " Alexander Graf
2010-07-29 12:47 ` [PATCH 06/27] KVM: PPC: Convert SPRG[0-4] " Alexander Graf
2010-07-29 12:47 ` [PATCH 07/27] KVM: PPC: Implement hypervisor interface Alexander Graf
2010-07-29 12:47 ` [PATCH 08/27] KVM: PPC: Add PV guest critical sections Alexander Graf
2010-07-29 12:47 ` Alexander Graf [this message]
2010-07-29 12:47 ` [PATCH 10/27] KVM: PPC: Tell guest about pending interrupts Alexander Graf
2010-07-29 12:47 ` [PATCH 11/27] KVM: PPC: Make PAM a define Alexander Graf
2010-07-29 12:47 ` [PATCH 12/27] KVM: PPC: First magic page steps Alexander Graf
2010-07-29 12:47 ` [PATCH 13/27] KVM: PPC: Magic Page Book3s support Alexander Graf
2010-07-29 12:47 ` [PATCH 14/27] KVM: PPC: Expose magic page support to guest Alexander Graf
2010-07-29 12:47 ` [PATCH 15/27] KVM: Move kvm_guest_init out of generic code Alexander Graf
2010-07-29 12:47 ` [PATCH 16/27] KVM: PPC: Generic KVM PV guest support Alexander Graf
2010-07-29 12:47 ` [PATCH 17/27] KVM: PPC: KVM PV guest stubs Alexander Graf
2010-08-05 17:16   ` Hollis Blanchard
2010-07-29 12:47 ` [PATCH 18/27] KVM: PPC: PV instructions to loads and stores Alexander Graf
2010-07-29 12:48 ` [PATCH 19/27] KVM: PPC: PV tlbsync to nop Alexander Graf
2010-07-29 12:48 ` [PATCH 20/27] KVM: PPC: Introduce kvm_tmp framework Alexander Graf
2010-07-29 12:48 ` [PATCH 21/27] KVM: PPC: Introduce branch patching helper Alexander Graf
2010-07-29 12:48 ` [PATCH 22/27] KVM: PPC: PV assembler helpers Alexander Graf
2010-07-29 12:48 ` [PATCH 23/27] KVM: PPC: PV mtmsrd L=1 Alexander Graf
2010-07-29 12:48 ` [PATCH 24/27] KVM: PPC: PV mtmsrd L=0 and mtmsr Alexander Graf
2010-07-29 12:48 ` [PATCH 25/27] KVM: PPC: PV wrteei Alexander Graf
2010-07-29 12:48 ` [PATCH 26/27] KVM: PPC: Add Documentation about PV interface Alexander Graf
2010-07-29 12:48 ` [PATCH 27/27] KVM: PPC: Add get_pvinfo interface to query hypercall instructions Alexander Graf
2010-08-01 14:02 ` [PATCH 00/27] KVM PPC PV framework v3 Avi Kivity
2010-08-01 20:21   ` Alexander Graf
2010-08-03 16:16     ` Scott Wood
2010-08-05  7:57       ` Avi Kivity
2010-08-05  8:01         ` Alexander Graf
2010-08-05  8:05           ` Avi Kivity
2010-08-05  8:25 ` Avi Kivity
2010-08-06 16:28 ` Kumar Gala
2010-08-16 13:11   ` Alexander Graf
  -- strict thread matches above, loose matches on Subject: below --
2010-07-01 10:42 [PATCH 00/27] KVM PPC PV framework Alexander Graf
2010-07-01 10:42 ` [PATCH 09/27] KVM: PPC: Add PV guest scratch registers Alexander Graf

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