Hi Cam, I used your patches successfully to support shared memory on KVM and used the test cases successfully, but qemu-kvm crashes when I increased the size of the shared memory. I applied the ivshmem patch to qemu-kvm-0.12.3 (some manual patching was needed). It worked flawlessly for up to 128MB of shared memory on my system. I am running on a machine with 64GB memory running opensuse (kernel 2.6.27) on AMD opteron. Qemu crashes with smp=4 and the shared memory requested in 256MB, (512MB with smp=1), even though the shared memory file is created. I debugged the problem and it seems that some memory corruptions happens. It crashes in the subpage_register for rtl8139 pci driver!, tracked back to rtl8139_mmio_map. The problem starts with corrupted value in the config field in the struct for the rtl8139 driver. At offset 20 of this field the address should indicate that the address is uninitialized at that time of crash, but surprisingly the value changes over the course of execution and gets the SIZE of the shared memory allocated (related to ivshmem). I failed to identify what changes/corrupts that field. I tried some padding for allocation but the field always gets updated with the size of the shared memory in a very consistent way. Do you have clue what might be causing this problem? Thanks, -Khaled _________________________________________________________________ Hotmail: Powerful Free email with security by Microsoft. http://clk.atdmt.com/GBL/go/201469230/direct/01/-- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
