linux-kernel - [PATCH 36/50] KVM: Add coalesced MMIO support (powerpc part)

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Message-Id: <1214483312-9265-37-git-send-email-avi@qumranet.com>
Date:	Thu, 26 Jun 2008 15:28:18 +0300
From:	Avi Kivity <avi@...ranet.com>
To:	kvm@...r.kernel.org
Cc:	linux-kernel@...r.kernel.org,
	Laurent Vivier <Laurent.Vivier@...l.net>
Subject: [PATCH 36/50] KVM: Add coalesced MMIO support (powerpc part)

From: Laurent Vivier <Laurent.Vivier@...l.net>

This patch enables coalesced MMIO for powerpc architecture.
It defines KVM_MMIO_PAGE_OFFSET and KVM_CAP_COALESCED_MMIO.
It enables the compilation of coalesced_mmio.c.

Signed-off-by: Laurent Vivier <Laurent.Vivier@...l.net>
Signed-off-by: Avi Kivity <avi@...ranet.com>
---
 arch/powerpc/kvm/Makefile      |    2 +-
 arch/powerpc/kvm/powerpc.c     |    3 +++
 include/asm-powerpc/kvm_host.h |    2 ++
 3 files changed, 6 insertions(+), 1 deletions(-)

diff --git a/arch/powerpc/kvm/Makefile b/arch/powerpc/kvm/Makefile
index d0d358d..04e3449 100644
--- a/arch/powerpc/kvm/Makefile
+++ b/arch/powerpc/kvm/Makefile
@@ -4,7 +4,7 @@
 
 EXTRA_CFLAGS += -Ivirt/kvm -Iarch/powerpc/kvm
 
-common-objs = $(addprefix ../../../virt/kvm/, kvm_main.o)
+common-objs = $(addprefix ../../../virt/kvm/, kvm_main.o coalesced_mmio.o)
 
 kvm-objs := $(common-objs) powerpc.o emulate.o booke_guest.o
 obj-$(CONFIG_KVM) += kvm.o
diff --git a/arch/powerpc/kvm/powerpc.c b/arch/powerpc/kvm/powerpc.c
index 0513b35..b850d24 100644
--- a/arch/powerpc/kvm/powerpc.c
+++ b/arch/powerpc/kvm/powerpc.c
@@ -145,6 +145,9 @@ int kvm_dev_ioctl_check_extension(long ext)
 	case KVM_CAP_USER_MEMORY:
 		r = 1;
 		break;
+	case KVM_CAP_COALESCED_MMIO:
+		r = KVM_COALESCED_MMIO_PAGE_OFFSET;
+		break;
 	default:
 		r = 0;
 		break;
diff --git a/include/asm-powerpc/kvm_host.h b/include/asm-powerpc/kvm_host.h
index 81a69d7..2655e2a 100644
--- a/include/asm-powerpc/kvm_host.h
+++ b/include/asm-powerpc/kvm_host.h
@@ -31,6 +31,8 @@
 /* memory slots that does not exposed to userspace */
 #define KVM_PRIVATE_MEM_SLOTS 4
 
+#define KVM_COALESCED_MMIO_PAGE_OFFSET 1
+
 /* We don't currently support large pages. */
 #define KVM_PAGES_PER_HPAGE (1<<31)
 
-- 
1.5.6

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