diff options
| author | Philippe Mathieu-Daudé <f4bug@amsat.org> | 2021-09-11 18:54:20 +0200 |
|---|---|---|
| committer | Richard Henderson <richard.henderson@linaro.org> | 2021-09-14 12:00:21 -0700 |
| commit | 604664726f400ca3857a28d7169542596dd83dd0 (patch) | |
| tree | 667e7cd6bff6d6bdefb9b1b98ea391faf15d9499 /target/i386 | |
| parent | 68fa1780e07cb0a649d7cbd5c753cedcfe2e46c4 (diff) | |
target/i386: Restrict cpu_exec_interrupt() handler to sysemu
Restrict cpu_exec_interrupt() and its callees to sysemu.
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Warner Losh <imp@bsdimp.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20210911165434.531552-11-f4bug@amsat.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Diffstat (limited to 'target/i386')
| -rw-r--r-- | target/i386/tcg/helper-tcg.h | 2 | ||||
| -rw-r--r-- | target/i386/tcg/seg_helper.c | 10 | ||||
| -rw-r--r-- | target/i386/tcg/tcg-cpu.c | 2 |
3 files changed, 5 insertions, 9 deletions
diff --git a/target/i386/tcg/helper-tcg.h b/target/i386/tcg/helper-tcg.h index 2510cc244e..60ca09e95e 100644 --- a/target/i386/tcg/helper-tcg.h +++ b/target/i386/tcg/helper-tcg.h @@ -38,7 +38,9 @@ QEMU_BUILD_BUG_ON(TCG_PHYS_ADDR_BITS > TARGET_PHYS_ADDR_SPACE_BITS); * @cpu: vCPU the interrupt is to be handled by. */ void x86_cpu_do_interrupt(CPUState *cpu); +#ifndef CONFIG_USER_ONLY bool x86_cpu_exec_interrupt(CPUState *cpu, int int_req); +#endif /* helper.c */ bool x86_cpu_tlb_fill(CPUState *cs, vaddr address, int size, diff --git a/target/i386/tcg/seg_helper.c b/target/i386/tcg/seg_helper.c index 56263e358d..4e6f26a7b7 100644 --- a/target/i386/tcg/seg_helper.c +++ b/target/i386/tcg/seg_helper.c @@ -1110,6 +1110,7 @@ void do_interrupt_x86_hardirq(CPUX86State *env, int intno, int is_hw) do_interrupt_all(env_archcpu(env), intno, 0, 0, 0, is_hw); } +#ifndef CONFIG_USER_ONLY bool x86_cpu_exec_interrupt(CPUState *cs, int interrupt_request) { X86CPU *cpu = X86_CPU(cs); @@ -1125,23 +1126,17 @@ bool x86_cpu_exec_interrupt(CPUState *cs, int interrupt_request) * This is required to make icount-driven execution deterministic. */ switch (interrupt_request) { -#if !defined(CONFIG_USER_ONLY) case CPU_INTERRUPT_POLL: cs->interrupt_request &= ~CPU_INTERRUPT_POLL; apic_poll_irq(cpu->apic_state); break; -#endif case CPU_INTERRUPT_SIPI: do_cpu_sipi(cpu); break; case CPU_INTERRUPT_SMI: cpu_svm_check_intercept_param(env, SVM_EXIT_SMI, 0, 0); cs->interrupt_request &= ~CPU_INTERRUPT_SMI; -#ifdef CONFIG_USER_ONLY - cpu_abort(CPU(cpu), "SMI interrupt: cannot enter SMM in user-mode"); -#else do_smm_enter(cpu); -#endif /* CONFIG_USER_ONLY */ break; case CPU_INTERRUPT_NMI: cpu_svm_check_intercept_param(env, SVM_EXIT_NMI, 0, 0); @@ -1162,7 +1157,6 @@ bool x86_cpu_exec_interrupt(CPUState *cs, int interrupt_request) "Servicing hardware INT=0x%02x\n", intno); do_interrupt_x86_hardirq(env, intno, 1); break; -#if !defined(CONFIG_USER_ONLY) case CPU_INTERRUPT_VIRQ: cpu_svm_check_intercept_param(env, SVM_EXIT_VINTR, 0, 0); intno = x86_ldl_phys(cs, env->vm_vmcb @@ -1173,12 +1167,12 @@ bool x86_cpu_exec_interrupt(CPUState *cs, int interrupt_request) cs->interrupt_request &= ~CPU_INTERRUPT_VIRQ; env->int_ctl &= ~V_IRQ_MASK; break; -#endif } /* Ensure that no TB jump will be modified as the program flow was changed. */ return true; } +#endif /* CONFIG_USER_ONLY */ void helper_lldt(CPUX86State *env, int selector) { diff --git a/target/i386/tcg/tcg-cpu.c b/target/i386/tcg/tcg-cpu.c index 04c35486a2..3ecfae34cb 100644 --- a/target/i386/tcg/tcg-cpu.c +++ b/target/i386/tcg/tcg-cpu.c @@ -72,12 +72,12 @@ static const struct TCGCPUOps x86_tcg_ops = { .synchronize_from_tb = x86_cpu_synchronize_from_tb, .cpu_exec_enter = x86_cpu_exec_enter, .cpu_exec_exit = x86_cpu_exec_exit, - .cpu_exec_interrupt = x86_cpu_exec_interrupt, .tlb_fill = x86_cpu_tlb_fill, #ifdef CONFIG_USER_ONLY .fake_user_interrupt = x86_cpu_do_interrupt, #else .do_interrupt = x86_cpu_do_interrupt, + .cpu_exec_interrupt = x86_cpu_exec_interrupt, .debug_excp_handler = breakpoint_handler, .debug_check_breakpoint = x86_debug_check_breakpoint, #endif /* !CONFIG_USER_ONLY */ |