| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Date: Mon, 27 Nov 2006 12:31:38 -0000
From: Avi Kivity <avi@...ranet.com>
To: kvm-devel@...ts.sourceforge.net
Cc: linux-kernel@...r.kernel.org, akpm@...l.org
Subject: [PATCH 21/38] KVM: Make inject_page_fault() an arch operation
Signed-off-by: Avi Kivity <avi@...ranet.com>
Index: linux-2.6/drivers/kvm/kvm.h
===================================================================
--- linux-2.6.orig/drivers/kvm/kvm.h
+++ linux-2.6/drivers/kvm/kvm.h
@@ -281,6 +281,8 @@ struct kvm_arch_ops {
void (*decache_regs)(struct kvm_vcpu *vcpu);
void (*flush_tlb)(struct kvm_vcpu *vcpu);
+ void (*inject_page_fault)(struct kvm_vcpu *vcpu,
+ unsigned long addr, u32 err_code);
int (*run)(struct kvm_vcpu *vcpu, struct kvm_run *run);
int (*vcpu_setup)(struct kvm_vcpu *vcpu);
Index: linux-2.6/drivers/kvm/mmu.c
===================================================================
--- linux-2.6.orig/drivers/kvm/mmu.c
+++ linux-2.6/drivers/kvm/mmu.c
@@ -455,32 +455,7 @@ static void inject_page_fault(struct kvm
u64 addr,
u32 err_code)
{
- u32 vect_info = vmcs_read32(IDT_VECTORING_INFO_FIELD);
-
- pgprintk("inject_page_fault: 0x%llx err 0x%x\n", addr, err_code);
-
- ++kvm_stat.pf_guest;
-
- if (is_page_fault(vect_info)) {
- printk(KERN_DEBUG "inject_page_fault: "
- "double fault 0x%llx @ 0x%lx\n",
- addr, vmcs_readl(GUEST_RIP));
- vmcs_write32(VM_ENTRY_EXCEPTION_ERROR_CODE, 0);
- vmcs_write32(VM_ENTRY_INTR_INFO_FIELD,
- DF_VECTOR |
- INTR_TYPE_EXCEPTION |
- INTR_INFO_DELIEVER_CODE_MASK |
- INTR_INFO_VALID_MASK);
- return;
- }
- vcpu->cr2 = addr;
- vmcs_write32(VM_ENTRY_EXCEPTION_ERROR_CODE, err_code);
- vmcs_write32(VM_ENTRY_INTR_INFO_FIELD,
- PF_VECTOR |
- INTR_TYPE_EXCEPTION |
- INTR_INFO_DELIEVER_CODE_MASK |
- INTR_INFO_VALID_MASK);
-
+ kvm_arch_ops->inject_page_fault(vcpu, addr, err_code);
}
static inline int fix_read_pf(u64 *shadow_ent)
Index: linux-2.6/drivers/kvm/vmx.c
===================================================================
--- linux-2.6.orig/drivers/kvm/vmx.c
+++ linux-2.6/drivers/kvm/vmx.c
@@ -1624,6 +1624,36 @@ static void vmx_flush_tlb(struct kvm_vcp
vmcs_writel(GUEST_CR3, vmcs_readl(GUEST_CR3));
}
+static void vmx_inject_page_fault(struct kvm_vcpu *vcpu,
+ unsigned long addr,
+ u32 err_code)
+{
+ u32 vect_info = vmcs_read32(IDT_VECTORING_INFO_FIELD);
+
+ ++kvm_stat.pf_guest;
+
+ if (is_page_fault(vect_info)) {
+ printk(KERN_DEBUG "inject_page_fault: "
+ "double fault 0x%lx @ 0x%lx\n",
+ addr, vmcs_readl(GUEST_RIP));
+ vmcs_write32(VM_ENTRY_EXCEPTION_ERROR_CODE, 0);
+ vmcs_write32(VM_ENTRY_INTR_INFO_FIELD,
+ DF_VECTOR |
+ INTR_TYPE_EXCEPTION |
+ INTR_INFO_DELIEVER_CODE_MASK |
+ INTR_INFO_VALID_MASK);
+ return;
+ }
+ vcpu->cr2 = addr;
+ vmcs_write32(VM_ENTRY_EXCEPTION_ERROR_CODE, err_code);
+ vmcs_write32(VM_ENTRY_INTR_INFO_FIELD,
+ PF_VECTOR |
+ INTR_TYPE_EXCEPTION |
+ INTR_INFO_DELIEVER_CODE_MASK |
+ INTR_INFO_VALID_MASK);
+
+}
+
static struct kvm_arch_ops vmx_arch_ops = {
.cpu_has_kvm_support = cpu_has_kvm_support,
.disabled_by_bios = vmx_disabled_by_bios,
@@ -1650,6 +1680,7 @@ static struct kvm_arch_ops vmx_arch_ops
.decache_regs = vcpu_put_rsp_rip,
.flush_tlb = vmx_flush_tlb,
+ .inject_page_fault = vmx_inject_page_fault,
.run = vmx_vcpu_run,
.skip_emulated_instruction = skip_emulated_instruction,
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
Powered by blists - more mailing lists