From 0225fb509d51fcf777eb0aa31c304c582e3248fd Mon Sep 17 00:00:00 2001 From: Mathias Krause Date: Thu, 30 Aug 2012 01:30:16 +0200 Subject: [PATCH] KVM: x86 emulator: constify emulate_ops We never change emulate_ops[] at runtime so it should be r/o. Signed-off-by: Mathias Krause Signed-off-by: Avi Kivity --- arch/x86/include/asm/kvm_emulate.h | 2 +- arch/x86/kvm/emulate.c | 22 +++++++++++----------- arch/x86/kvm/x86.c | 2 +- 3 files changed, 13 insertions(+), 13 deletions(-) diff --git a/arch/x86/include/asm/kvm_emulate.h b/arch/x86/include/asm/kvm_emulate.h index 282aee5..b5bb73a 100644 --- a/arch/x86/include/asm/kvm_emulate.h +++ b/arch/x86/include/asm/kvm_emulate.h @@ -250,7 +250,7 @@ struct read_cache { }; struct x86_emulate_ctxt { - struct x86_emulate_ops *ops; + const struct x86_emulate_ops *ops; /* Register state before/after emulation. */ unsigned long eflags; diff --git a/arch/x86/kvm/emulate.c b/arch/x86/kvm/emulate.c index fd06f9d..663e958 100644 --- a/arch/x86/kvm/emulate.c +++ b/arch/x86/kvm/emulate.c @@ -1325,7 +1325,7 @@ static int read_interrupt_descriptor(struct x86_emulate_ctxt *ctxt, static void get_descriptor_table_ptr(struct x86_emulate_ctxt *ctxt, u16 selector, struct desc_ptr *dt) { - struct x86_emulate_ops *ops = ctxt->ops; + const struct x86_emulate_ops *ops = ctxt->ops; if (selector & 1 << 2) { struct desc_struct desc; @@ -1747,7 +1747,7 @@ static int em_popa(struct x86_emulate_ctxt *ctxt) static int __emulate_int_real(struct x86_emulate_ctxt *ctxt, int irq) { - struct x86_emulate_ops *ops = ctxt->ops; + const struct x86_emulate_ops *ops = ctxt->ops; int rc; struct desc_ptr dt; gva_t cs_addr; @@ -2129,7 +2129,7 @@ static bool vendor_intel(struct x86_emulate_ctxt *ctxt) static bool em_syscall_is_enabled(struct x86_emulate_ctxt *ctxt) { - struct x86_emulate_ops *ops = ctxt->ops; + const struct x86_emulate_ops *ops = ctxt->ops; u32 eax, ebx, ecx, edx; /* @@ -2173,7 +2173,7 @@ static bool em_syscall_is_enabled(struct x86_emulate_ctxt *ctxt) static int em_syscall(struct x86_emulate_ctxt *ctxt) { - struct x86_emulate_ops *ops = ctxt->ops; + const struct x86_emulate_ops *ops = ctxt->ops; struct desc_struct cs, ss; u64 msr_data; u16 cs_sel, ss_sel; @@ -2231,7 +2231,7 @@ static int em_syscall(struct x86_emulate_ctxt *ctxt) static int em_sysenter(struct x86_emulate_ctxt *ctxt) { - struct x86_emulate_ops *ops = ctxt->ops; + const struct x86_emulate_ops *ops = ctxt->ops; struct desc_struct cs, ss; u64 msr_data; u16 cs_sel, ss_sel; @@ -2294,7 +2294,7 @@ static int em_sysenter(struct x86_emulate_ctxt *ctxt) static int em_sysexit(struct x86_emulate_ctxt *ctxt) { - struct x86_emulate_ops *ops = ctxt->ops; + const struct x86_emulate_ops *ops = ctxt->ops; struct desc_struct cs, ss; u64 msr_data; int usermode; @@ -2357,7 +2357,7 @@ static bool emulator_bad_iopl(struct x86_emulate_ctxt *ctxt) static bool emulator_io_port_access_allowed(struct x86_emulate_ctxt *ctxt, u16 port, u16 len) { - struct x86_emulate_ops *ops = ctxt->ops; + const struct x86_emulate_ops *ops = ctxt->ops; struct desc_struct tr_seg; u32 base3; int r; @@ -2476,7 +2476,7 @@ static int task_switch_16(struct x86_emulate_ctxt *ctxt, u16 tss_selector, u16 old_tss_sel, ulong old_tss_base, struct desc_struct *new_desc) { - struct x86_emulate_ops *ops = ctxt->ops; + const struct x86_emulate_ops *ops = ctxt->ops; struct tss_segment_16 tss_seg; int ret; u32 new_tss_base = get_desc_base(new_desc); @@ -2623,7 +2623,7 @@ static int task_switch_32(struct x86_emulate_ctxt *ctxt, u16 tss_selector, u16 old_tss_sel, ulong old_tss_base, struct desc_struct *new_desc) { - struct x86_emulate_ops *ops = ctxt->ops; + const struct x86_emulate_ops *ops = ctxt->ops; struct tss_segment_32 tss_seg; int ret; u32 new_tss_base = get_desc_base(new_desc); @@ -2667,7 +2667,7 @@ static int emulator_do_task_switch(struct x86_emulate_ctxt *ctxt, u16 tss_selector, int idt_index, int reason, bool has_error_code, u32 error_code) { - struct x86_emulate_ops *ops = ctxt->ops; + const struct x86_emulate_ops *ops = ctxt->ops; struct desc_struct curr_tss_desc, next_tss_desc; int ret; u16 old_tss_sel = get_segment_selector(ctxt, VCPU_SREG_TR); @@ -4339,7 +4339,7 @@ static void fetch_possible_mmx_operand(struct x86_emulate_ctxt *ctxt, int x86_emulate_insn(struct x86_emulate_ctxt *ctxt) { - struct x86_emulate_ops *ops = ctxt->ops; + const struct x86_emulate_ops *ops = ctxt->ops; int rc = X86EMUL_CONTINUE; int saved_dst_type = ctxt->dst.type; diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index 20f2266..0dc066f 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -4323,7 +4323,7 @@ static void emulator_write_gpr(struct x86_emulate_ctxt *ctxt, unsigned reg, ulon kvm_register_write(emul_to_vcpu(ctxt), reg, val); } -static struct x86_emulate_ops emulate_ops = { +static const struct x86_emulate_ops emulate_ops = { .read_gpr = emulator_read_gpr, .write_gpr = emulator_write_gpr, .read_std = kvm_read_guest_virt_system, -- 2.7.4