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[Qemu-devel] [patch uq/master 8/9] kvm: validate context for kvm cpu get
From: |
Marcelo Tosatti |
Subject: |
[Qemu-devel] [patch uq/master 8/9] kvm: validate context for kvm cpu get/put operations |
Date: |
Tue, 04 May 2010 09:45:26 -0300 |
User-agent: |
quilt/0.47-1 |
From: Jan Kiszka <address@hidden>
Validate that KVM vcpu state is only read/written from cpu thread itself
or that cpu is stopped.
Signed-off-by: Marcelo Tosatti <address@hidden>
Index: qemu/target-i386/kvm.c
===================================================================
--- qemu.orig/target-i386/kvm.c
+++ qemu/target-i386/kvm.c
@@ -949,6 +949,8 @@ int kvm_arch_put_registers(CPUState *env
{
int ret;
+ assert(cpu_is_stopped(env) || qemu_cpu_self(env));
+
ret = kvm_getput_regs(env, 1);
if (ret < 0)
return ret;
@@ -991,6 +993,8 @@ int kvm_arch_get_registers(CPUState *env
{
int ret;
+ assert(cpu_is_stopped(env) || qemu_cpu_self(env));
+
ret = kvm_getput_regs(env, 0);
if (ret < 0)
return ret;
- [Qemu-devel] [patch uq/master 0/9] enable smp > 1 and related fixes, Marcelo Tosatti, 2010/05/04
- [Qemu-devel] [patch uq/master 5/9] kvm: synchronize state from cpu context, Marcelo Tosatti, 2010/05/04
- [Qemu-devel] [patch uq/master 4/9] port qemu-kvm's on_vcpu code, Marcelo Tosatti, 2010/05/04
- [Qemu-devel] [patch uq/master 7/9] move stop/stopped CPU_COMMON fields after area zeroed by reset, Marcelo Tosatti, 2010/05/04
- [Qemu-devel] [patch uq/master 6/9] add cpu_is_stopped helper, Marcelo Tosatti, 2010/05/04
- [Qemu-devel] [patch uq/master 9/9] kvm: enable smp > 1, Marcelo Tosatti, 2010/05/04
- [Qemu-devel] [patch uq/master 3/9] standardize on qemu_cpu_kick for signalling cpu thread(s), Marcelo Tosatti, 2010/05/04
- [Qemu-devel] [patch uq/master 1/9] kvm: set cpu_single_env around KVM_RUN ioctl, Marcelo Tosatti, 2010/05/04
- [Qemu-devel] [patch uq/master 2/9] make SIG_IPI to tcg vcpu thread reliable, Marcelo Tosatti, 2010/05/04
- [Qemu-devel] [patch uq/master 8/9] kvm: validate context for kvm cpu get/put operations,
Marcelo Tosatti <=
- [Qemu-devel] Re: [patch uq/master 0/9] enable smp > 1 and related fixes, Anthony Liguori, 2010/05/05
- [Qemu-devel] Re: [patch uq/master 0/9] enable smp > 1 and related fixes, Avi Kivity, 2010/05/06