diff options
Diffstat (limited to 'tools/testing/selftests/kvm/lib/x86_64/ucall.c')
| -rw-r--r-- | tools/testing/selftests/kvm/lib/x86_64/ucall.c | 32 |
1 files changed, 0 insertions, 32 deletions
diff --git a/tools/testing/selftests/kvm/lib/x86_64/ucall.c b/tools/testing/selftests/kvm/lib/x86_64/ucall.c deleted file mode 100644 index 4d41dc63cc9e..000000000000 --- a/tools/testing/selftests/kvm/lib/x86_64/ucall.c +++ /dev/null @@ -1,32 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 -/* - * ucall support. A ucall is a "hypercall to userspace". - * - * Copyright (C) 2018, Red Hat, Inc. - */ -#include "kvm_util.h" - -#define UCALL_PIO_PORT ((uint16_t)0x1000) - -void ucall_arch_init(struct kvm_vm *vm, vm_paddr_t mmio_gpa) -{ -} - -void ucall_arch_do_ucall(vm_vaddr_t uc) -{ - asm volatile("in %[port], %%al" - : : [port] "d" (UCALL_PIO_PORT), "D" (uc) : "rax", "memory"); -} - -void *ucall_arch_get_ucall(struct kvm_vcpu *vcpu) -{ - struct kvm_run *run = vcpu->run; - - if (run->exit_reason == KVM_EXIT_IO && run->io.port == UCALL_PIO_PORT) { - struct kvm_regs regs; - - vcpu_regs_get(vcpu, ®s); - return (void *)regs.rdi; - } - return NULL; -} |
