From edab4fe1f6419fc3a1de3b134929ae2123bea3ad Mon Sep 17 00:00:00 2001 From: James Hogan Date: Tue, 14 Mar 2017 10:15:23 +0000 Subject: [PATCH] KVM: MIPS: Add hardware_{enable,disable} callback MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit Add an implementation callback for the kvm_arch_hardware_enable() and kvm_arch_hardware_disable() architecture functions, with simple stubs for trap & emulate. This is in preparation for VZ which will make use of them. Signed-off-by: James Hogan Cc: Paolo Bonzini Cc: "Radim Krčmář" Cc: Ralf Baechle Cc: linux-mips@linux-mips.org Cc: kvm@vger.kernel.org --- arch/mips/include/asm/kvm_host.h | 3 ++- arch/mips/kvm/mips.c | 7 ++++++- arch/mips/kvm/trap_emul.c | 11 +++++++++++ 3 files changed, 19 insertions(+), 2 deletions(-) diff --git a/arch/mips/include/asm/kvm_host.h b/arch/mips/include/asm/kvm_host.h index 3a52a6f0573b..acfe7e4e8a3c 100644 --- a/arch/mips/include/asm/kvm_host.h +++ b/arch/mips/include/asm/kvm_host.h @@ -542,6 +542,8 @@ struct kvm_mips_callbacks { int (*handle_msa_fpe)(struct kvm_vcpu *vcpu); int (*handle_fpe)(struct kvm_vcpu *vcpu); int (*handle_msa_disabled)(struct kvm_vcpu *vcpu); + int (*hardware_enable)(void); + void (*hardware_disable)(void); int (*check_extension)(struct kvm *kvm, long ext); int (*vcpu_init)(struct kvm_vcpu *vcpu); void (*vcpu_uninit)(struct kvm_vcpu *vcpu); @@ -864,7 +866,6 @@ extern int kvm_mips_trans_mtc0(union mips_instruction inst, u32 *opc, extern void kvm_mips_dump_stats(struct kvm_vcpu *vcpu); extern unsigned long kvm_mips_get_ramsize(struct kvm *kvm); -static inline void kvm_arch_hardware_disable(void) {} static inline void kvm_arch_hardware_unsetup(void) {} static inline void kvm_arch_sync_events(struct kvm *kvm) {} static inline void kvm_arch_free_memslot(struct kvm *kvm, diff --git a/arch/mips/kvm/mips.c b/arch/mips/kvm/mips.c index 78d58c2528a9..5681117083af 100644 --- a/arch/mips/kvm/mips.c +++ b/arch/mips/kvm/mips.c @@ -92,7 +92,12 @@ int kvm_arch_vcpu_should_kick(struct kvm_vcpu *vcpu) int kvm_arch_hardware_enable(void) { - return 0; + return kvm_mips_callbacks->hardware_enable(); +} + +void kvm_arch_hardware_disable(void) +{ + kvm_mips_callbacks->hardware_disable(); } int kvm_arch_hardware_setup(void) diff --git a/arch/mips/kvm/trap_emul.c b/arch/mips/kvm/trap_emul.c index db3c48634eda..50b812bfe083 100644 --- a/arch/mips/kvm/trap_emul.c +++ b/arch/mips/kvm/trap_emul.c @@ -488,6 +488,15 @@ static int kvm_trap_emul_handle_msa_disabled(struct kvm_vcpu *vcpu) return ret; } +static int kvm_trap_emul_hardware_enable(void) +{ + return 0; +} + +static void kvm_trap_emul_hardware_disable(void) +{ +} + static int kvm_trap_emul_check_extension(struct kvm *kvm, long ext) { int r; @@ -1254,6 +1263,8 @@ static struct kvm_mips_callbacks kvm_trap_emul_callbacks = { .handle_fpe = kvm_trap_emul_handle_fpe, .handle_msa_disabled = kvm_trap_emul_handle_msa_disabled, + .hardware_enable = kvm_trap_emul_hardware_enable, + .hardware_disable = kvm_trap_emul_hardware_disable, .check_extension = kvm_trap_emul_check_extension, .vcpu_init = kvm_trap_emul_vcpu_init, .vcpu_uninit = kvm_trap_emul_vcpu_uninit, -- 2.20.1