Merge remote-tracking branch 'master' into queue

Merge reason: development work has dependency on kvm patches merged
upstream.

Conflicts:
	arch/powerpc/include/asm/Kbuild
	arch/powerpc/include/asm/kvm_para.h

Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>

1 files changed, 91 insertions, 0 deletions

diff --git a/arch/powerpc/include/uapi/asm/kvm_para.h b/arch/powerpc/include/uapi/asm/kvm_para.h
new file mode 100644
index 000000000000..ed0e0254b47f
--- /dev/null
+++ b/arch/powerpc/include/uapi/asm/kvm_para.h
@@ -0,0 +1,91 @@
+/*
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License, version 2, as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ *
+ * Copyright IBM Corp. 2008
+ *
+ * Authors: Hollis Blanchard <hollisb@us.ibm.com>
+ */
+
+#ifndef _UAPI__POWERPC_KVM_PARA_H__
+#define _UAPI__POWERPC_KVM_PARA_H__
+
+#include <linux/types.h>
+
+/*
+ * Additions to this struct must only occur at the end, and should be
+ * accompanied by a KVM_MAGIC_FEAT flag to advertise that they are present
+ * (albeit not necessarily relevant to the current target hardware platform).
+ *
+ * Struct fields are always 32 or 64 bit aligned, depending on them being 32
+ * or 64 bit wide respectively.
+ *
+ * See Documentation/virtual/kvm/ppc-pv.txt
+ */
+struct kvm_vcpu_arch_shared {
+	__u64 scratch1;
+	__u64 scratch2;
+	__u64 scratch3;
+	__u64 critical;		/* Guest may not get interrupts if == r1 */
+	__u64 sprg0;
+	__u64 sprg1;
+	__u64 sprg2;
+	__u64 sprg3;
+	__u64 srr0;
+	__u64 srr1;
+	__u64 dar;		/* dear on BookE */
+	__u64 msr;
+	__u32 dsisr;
+	__u32 int_pending;	/* Tells the guest if we have an interrupt */
+	__u32 sr[16];
+	__u32 mas0;
+	__u32 mas1;
+	__u64 mas7_3;
+	__u64 mas2;
+	__u32 mas4;
+	__u32 mas6;
+	__u32 esr;
+	__u32 pir;
+
+	/*
+	 * SPRG4-7 are user-readable, so we can only keep these consistent
+	 * between the shared area and the real registers when there's an
+	 * intervening exit to KVM.  This also applies to SPRG3 on some
+	 * chips.
+	 *
+	 * This suffices for access by guest userspace, since in PR-mode
+	 * KVM, an exit must occur when changing the guest's MSR[PR].
+	 * If the guest kernel writes to SPRG3-7 via the shared area, it
+	 * must also use the shared area for reading while in kernel space.
+	 */
+	__u64 sprg4;
+	__u64 sprg5;
+	__u64 sprg6;
+	__u64 sprg7;
+};
+
+#define KVM_SC_MAGIC_R0		0x4b564d21 /* "KVM!" */
+
+#define KVM_HCALL_TOKEN(num)     _EV_HCALL_TOKEN(EV_KVM_VENDOR_ID, num)
+
+#include <uapi/asm/epapr_hcalls.h>
+
+#define KVM_FEATURE_MAGIC_PAGE	1
+
+#define KVM_MAGIC_FEAT_SR		(1 << 0)
+
+/* MASn, ESR, PIR, and high SPRGs */
+#define KVM_MAGIC_FEAT_MAS0_TO_SPRG7	(1 << 1)
+
+
+#endif /* _UAPI__POWERPC_KVM_PARA_H__ */