MIPS: KVM: Drop unused guest_inst from kvm_vcpu_arch

This change “MIPS: KVM: Drop unused guest_inst from kvm_vcpu_arch” in Linux kernel is authored by James Hogan <james.hogan [at] imgtec.com> on Thu Jun 9 14:19:04 2016 +0100.

MIPS: KVM: Drop unused guest_inst from kvm_vcpu_arch

The MIPS kvm_vcpu_arch::guest_inst isn't used, so drop it from the
struct and drop its asm-offsets definition.

Signed-off-by: James Hogan <james.hogan@imgtec.com>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Radim Krčmář <rkrcmar@redhat.com>
Cc: linux-mips@linux-mips.org
Cc: kvm@vger.kernel.org
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

This Linux change may have been applied to various maintained Linux releases and you can find Linux releases including commit d40dd9e.

There are 3 lines of Linux source code added/deleted in this change. Code changes to Linux kernel are as follows.

 arch/mips/include/asm/kvm_host.h | 1 -
 arch/mips/kernel/asm-offsets.c   | 2 --
 2 files changed, 3 deletions(-)

diff --git a/arch/mips/include/asm/kvm_host.h b/arch/mips/include/asm/kvm_host.h
index 36a391d..b310bb3 100644
--- a/arch/mips/include/asm/kvm_host.h
+++ b/arch/mips/include/asm/kvm_host.h
@@ -347,7 +347,6 @@ struct kvm_vcpu_arch {
 	unsigned long host_cp0_cause;
 	unsigned long host_cp0_epc;
 	unsigned long host_cp0_entryhi;
-	uint32_t guest_inst;
 
 	/* GPRS */
 	unsigned long gprs[32];
diff --git a/arch/mips/kernel/asm-offsets.c b/arch/mips/kernel/asm-offsets.c
index 1ea973b..4d96a90 100644
--- a/arch/mips/kernel/asm-offsets.c
+++ b/arch/mips/kernel/asm-offsets.c
@@ -366,8 +366,6 @@ void output_kvm_defines(void)
 	OFFSET(VCPU_HOST_EPC, kvm_vcpu_arch, host_cp0_epc);
 	OFFSET(VCPU_HOST_ENTRYHI, kvm_vcpu_arch, host_cp0_entryhi);
 
-	OFFSET(VCPU_GUEST_INST, kvm_vcpu_arch, guest_inst);
-
 	OFFSET(VCPU_R0, kvm_vcpu_arch, gprs[0]);
 	OFFSET(VCPU_R1, kvm_vcpu_arch, gprs[1]);
 	OFFSET(VCPU_R2, kvm_vcpu_arch, gprs[2]);

The commit for this change in Linux stable tree is d40dd9e (patch).

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