fork() has a WONTFIX bug where a page with an elevated reference count will be COWed such that the page address changes even in the process which has taken the reference. This interacts badly with internal memory slots that install pages in vmcs registers, such as the APIC access page.
This patchset disables fork() for these slots. Avi Kivity (2): KVM: Keep slot ID in memory slot structure KVM: Prevent internal slots from being COWed arch/x86/kvm/x86.c | 5 +++++ include/linux/kvm_host.h | 1 + virt/kvm/kvm_main.c | 1 + 3 files changed, 7 insertions(+), 0 deletions(-) -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
