From 0ed849e624b8dd726c475dd9d9be151d1b3ca1ec Mon Sep 17 00:00:00 2001 From: Asias He Date: Fri, 28 May 2010 15:48:16 +0800 Subject: [PATCH] kvm: reimplement kvm__setup_sregs It's better to get sregs which was initialized by kernel and change what we need precisely. Actually vmx_vcpu_reset does the cpu initialization before us. This solves the problem of failing to run on x86-32 host kernel. Signed-off-by: Asias He Signed-off-by: Cyrill Gorcunov --- kvm.c | 77 ++++------------------------------------------------------- 1 file changed, 4 insertions(+), 73 deletions(-) diff --git a/kvm.c b/kvm.c index 3aac4d4..cf18be7 100644 --- a/kvm.c +++ b/kvm.c @@ -491,80 +491,11 @@ static void kvm__setup_regs(struct kvm *self) static void kvm__setup_sregs(struct kvm *self) { - self->sregs = (struct kvm_sregs) { - .cr0 = 0x60000010ULL, - .cs = (struct kvm_segment) { - .selector = self->boot_selector, - .base = selector_to_base(self->boot_selector), - .limit = 0xffffU, - .type = 0x0bU, - .present = 1, - .dpl = 0x03, - .s = 1, - }, - .ss = (struct kvm_segment) { - .selector = self->boot_selector, - .base = selector_to_base(self->boot_selector), - .limit = 0xffffU, - .type = 0x03U, - .present = 1, - .dpl = 0x03, - .s = 1, - }, - .ds = (struct kvm_segment) { - .selector = self->boot_selector, - .base = selector_to_base(self->boot_selector), - .limit = 0xffffU, - .type = 0x03U, - .present = 1, - .dpl = 0x03, - .s = 1, - }, - .es = (struct kvm_segment) { - .selector = self->boot_selector, - .base = selector_to_base(self->boot_selector), - .limit = 0xffffU, - .type = 0x03U, - .present = 1, - .dpl = 0x03, - .s = 1, - }, - .fs = (struct kvm_segment) { - .selector = self->boot_selector, - .base = selector_to_base(self->boot_selector), - .limit = 0xffffU, - .type = 0x03U, - .present = 1, - .dpl = 0x03, - .s = 1, - }, - .gs = (struct kvm_segment) { - .selector = self->boot_selector, - .base = selector_to_base(self->boot_selector), - .limit = 0xffffU, - .type = 0x03U, - .present = 1, - .dpl = 0x03, - .s = 1, - }, - .tr = (struct kvm_segment) { - .limit = 0xffffU, - .present = 1, - .type = 0x03U, - }, - .ldt = (struct kvm_segment) { - .limit = 0xffffU, - .present = 1, - .type = 0x02U, - }, - .gdt = (struct kvm_dtable) { - .limit = 0xffffU, - }, - .idt = (struct kvm_dtable) { - .limit = 0xffffU, - }, - }; + if (ioctl(self->vcpu_fd, KVM_GET_SREGS, &self->sregs) < 0) + die_perror("KVM_GET_SREGS failed"); + self->sregs.cs.selector = self->boot_selector; + self->sregs.cs.base = selector_to_base(self->boot_selector); if (ioctl(self->vcpu_fd, KVM_SET_SREGS, &self->sregs) < 0) die_perror("KVM_SET_SREGS failed"); }