linux-kernel - [GIT PULL] KVM fixes for 2.6.27-rc4

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Date:	Mon, 25 Aug 2008 17:49:55 +0300
From:	Avi Kivity <avi@...ranet.com>
To:	Linus Torvalds <torvalds@...ux-foundation.org>
Cc:	linux-kernel@...r.kernel.org, kvm@...r.kernel.org
Subject: [GIT PULL] KVM fixes for 2.6.27-rc4

Linus, the repo and branch

  git://git.kernel.org/pub/scm/linux/kernel/git/avi/kvm.git kvm-updates-2.6.27

await your pulling pleasure.  There's a fix for the kvmtrace ABI, a race
plugged in smp guests on i386 hosts, and a fix for the placement of
exception handlers used during host reboot.

Shortlog, diffstat, and diff follow.

Adrian Bunk (1):
      KVM: fix userspace ABI breakage

Avi Kivity (1):
      KVM: MMU: Fix torn shadow pte

Eduardo Habkost (1):
      KVM: Use .fixup instead of .text.fixup on __kvm_handle_fault_on_reboot

 arch/x86/kvm/paging_tmpl.h |    2 +-
 include/asm-x86/kvm_host.h |    2 +-
 include/linux/kvm.h        |    4 ++--
 3 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/arch/x86/kvm/paging_tmpl.h b/arch/x86/kvm/paging_tmpl.h
index f72ac1f..4a814bf 100644
--- a/arch/x86/kvm/paging_tmpl.h
+++ b/arch/x86/kvm/paging_tmpl.h
@@ -345,7 +345,7 @@ static u64 *FNAME(fetch)(struct kvm_vcpu *vcpu, gva_t addr,
 		shadow_addr = __pa(shadow_page->spt);
 		shadow_pte = shadow_addr | PT_PRESENT_MASK | PT_ACCESSED_MASK
 			| PT_WRITABLE_MASK | PT_USER_MASK;
-		*shadow_ent = shadow_pte;
+		set_shadow_pte(shadow_ent, shadow_pte);
 	}
 
 	mmu_set_spte(vcpu, shadow_ent, access, walker->pte_access & access,
diff --git a/include/asm-x86/kvm_host.h b/include/asm-x86/kvm_host.h
index 0f3c531..c2e34c2 100644
--- a/include/asm-x86/kvm_host.h
+++ b/include/asm-x86/kvm_host.h
@@ -722,7 +722,7 @@ asmlinkage void kvm_handle_fault_on_reboot(void);
 
 #define __kvm_handle_fault_on_reboot(insn) \
 	"666: " insn "\n\t" \
-	".pushsection .text.fixup, \"ax\" \n" \
+	".pushsection .fixup, \"ax\" \n" \
 	"667: \n\t" \
 	KVM_EX_PUSH " $666b \n\t" \
 	"jmp kvm_handle_fault_on_reboot \n\t" \
diff --git a/include/linux/kvm.h b/include/linux/kvm.h
index 69511f7..70a3065 100644
--- a/include/linux/kvm.h
+++ b/include/linux/kvm.h
@@ -320,12 +320,12 @@ struct kvm_trace_rec {
 		struct {
 			__u64 cycle_u64;
 			__u32 extra_u32[KVM_TRC_EXTRA_MAX];
-		} cycle;
+		} __attribute__((packed)) cycle;
 		struct {
 			__u32 extra_u32[KVM_TRC_EXTRA_MAX];
 		} nocycle;
 	} u;
-} __attribute__((packed));
+};
 
 #define KVMIO 0xAE
 
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