Merge tag 'kvm-3.7-1' of git://git.kernel.org/pub/scm/virt/kvm/kvm

Pull KVM updates from Avi Kivity:
 "Highlights of the changes for this release include support for vfio
  level triggered interrupts, improved big real mode support on older
  Intels, a streamlines guest page table walker, guest APIC speedups,
  PIO optimizations, better overcommit handling, and read-only memory."

* tag 'kvm-3.7-1' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (138 commits)
  KVM: s390: Fix vcpu_load handling in interrupt code
  KVM: x86: Fix guest debug across vcpu INIT reset
  KVM: Add resampling irqfds for level triggered interrupts
  KVM: optimize apic interrupt delivery
  KVM: MMU: Eliminate pointless temporary 'ac'
  KVM: MMU: Avoid access/dirty update loop if all is well
  KVM: MMU: Eliminate eperm temporary
  KVM: MMU: Optimize is_last_gpte()
  KVM: MMU: Simplify walk_addr_generic() loop
  KVM: MMU: Optimize pte permission checks
  KVM: MMU: Update accessed and dirty bits after guest pagetable walk
  KVM: MMU: Move gpte_access() out of paging_tmpl.h
  KVM: MMU: Optimize gpte_access() slightly
  KVM: MMU: Push clean gpte write protection out of gpte_access()
  KVM: clarify kvmclock documentation
  KVM: make processes waiting on vcpu mutex killable
  KVM: SVM: Make use of asm.h
  KVM: VMX: Make use of asm.h
  KVM: VMX: Make lto-friendly
  KVM: x86: lapic: Clean up find_highest_vector() and count_vectors()
  ...

Conflicts:
	arch/s390/include/asm/processor.h
	arch/x86/kvm/i8259.c

1 files changed, 27 insertions, 0 deletions

diff --git a/arch/s390/kernel/dis.c b/arch/s390/kernel/dis.c
index cc84a24c023f..f00286bd2ef9 100644
--- a/arch/s390/kernel/dis.c
+++ b/arch/s390/kernel/dis.c
@@ -1501,6 +1501,33 @@ static struct insn *find_insn(unsigned char *code)
 	return NULL;
 }
 
+/**
+ * insn_to_mnemonic - decode an s390 instruction
+ * @instruction: instruction to decode
+ * @buf: buffer to fill with mnemonic
+ *
+ * Decode the instruction at @instruction and store the corresponding
+ * mnemonic into @buf.
+ * @buf is left unchanged if the instruction could not be decoded.
+ * Returns:
+ *  %0 on success, %-ENOENT if the instruction was not found.
+ */
+int insn_to_mnemonic(unsigned char *instruction, char buf[8])
+{
+	struct insn *insn;
+
+	insn = find_insn(instruction);
+	if (!insn)
+		return -ENOENT;
+	if (insn->name[0] == '\0')
+		snprintf(buf, sizeof(buf), "%s",
+			 long_insn_name[(int) insn->name[1]]);
+	else
+		snprintf(buf, sizeof(buf), "%.5s", insn->name);
+	return 0;
+}
+EXPORT_SYMBOL_GPL(insn_to_mnemonic);
+
 static int print_insn(char *buffer, unsigned char *code, unsigned long addr)
 {
 	struct insn *insn;