From: Fabiano Rosas <farosas@linux.ibm.com> stable inclusion from stable-v5.10.110 commit e8fe653fa7c63fc6fc6ad9016c84515298db8c60 bugzilla: https://gitee.com/openeuler/kernel/issues/I574AL Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=... -------------------------------- [ Upstream commit b99234b918c6e36b9aa0a5b2981e86b6bd11f8e2 ] The MMIO emulation code for vector instructions is duplicated between VSX and VMX. When emulating VMX we should check the VMX copy size instead of the VSX one. Fixes: acc9eb9305fe ("KVM: PPC: Reimplement LOAD_VMX/STORE_VMX instruction ...") Signed-off-by: Fabiano Rosas <farosas@linux.ibm.com> Reviewed-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20220125215655.1026224-3-farosas@linux.ibm.com Signed-off-by: Sasha Levin <sashal@kernel.org> Signed-off-by: Yu Liao <liaoyu15@huawei.com> Reviewed-by: Wei Li <liwei391@huawei.com> Signed-off-by: Zheng Zengkai <zhengzengkai@huawei.com> --- arch/powerpc/kvm/powerpc.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/powerpc/kvm/powerpc.c b/arch/powerpc/kvm/powerpc.c index 543db9157f3b..ef8077a739b8 100644 --- a/arch/powerpc/kvm/powerpc.c +++ b/arch/powerpc/kvm/powerpc.c @@ -1500,7 +1500,7 @@ int kvmppc_handle_vmx_load(struct kvm_vcpu *vcpu, { enum emulation_result emulated = EMULATE_DONE; - if (vcpu->arch.mmio_vsx_copy_nums > 2) + if (vcpu->arch.mmio_vmx_copy_nums > 2) return EMULATE_FAIL; while (vcpu->arch.mmio_vmx_copy_nums) { @@ -1597,7 +1597,7 @@ int kvmppc_handle_vmx_store(struct kvm_vcpu *vcpu, unsigned int index = rs & KVM_MMIO_REG_MASK; enum emulation_result emulated = EMULATE_DONE; - if (vcpu->arch.mmio_vsx_copy_nums > 2) + if (vcpu->arch.mmio_vmx_copy_nums > 2) return EMULATE_FAIL; vcpu->arch.io_gpr = rs; -- 2.20.1