On Wed, Mar 02, 2011 at 03:26:53PM +0800, Sheng Yang wrote: > Change from v10: > 1. Update according to the comments of Michael. > 2. Use mmio_needed to exit to userspace according to Marcelo's comments. PCI-wise, I don't see anything to complain about. So ack the PCI bits. You guys decide on the rest. Several things I suggested previously that are not related to the PCI point of view: 1. In msix_table_mmio_write, we fill in ext_data even if we are not going to exit to userspace in the end. It seems a trivial optimization to only do it if we exit. 2. Instead of filling in ext_data, and then copying to vcpu, we could fill the data in vcpu directly. 3. MSIX is not an error. So returning -ENOTSYNC to signal it is ugly. It would be cleaner to return negative value on error, and positive exit code to trigger exit. 4. Patch 4/4 adds whitespace errors that git complains about. With changes 2 and 3, arch/x86/kvm/x86.c would not need to know about msix at all. As I said these are all suggestions unrelated to pci, and I don't know what Avi/Marcelo think about 1 and 2. 3 and 4 are easy to fix though. > Sheng Yang (4): > KVM: Move struct kvm_io_device to kvm_host.h > KVM: Add kvm_io_ext_data to IO handler > KVM: Emulate MSI-X table in kernel > KVM: Add documents for MSI-X MMIO API > > Documentation/kvm/api.txt | 58 +++++++++ > arch/x86/kvm/Makefile | 2 +- > arch/x86/kvm/i8254.c | 6 +- > arch/x86/kvm/i8259.c | 3 +- > arch/x86/kvm/lapic.c | 3 +- > arch/x86/kvm/x86.c | 42 +++++-- > include/linux/kvm.h | 28 +++++ > include/linux/kvm_host.h | 64 ++++++++++- > virt/kvm/assigned-dev.c | 41 +++++++ > virt/kvm/coalesced_mmio.c | 3 +- > virt/kvm/eventfd.c | 2 +- > virt/kvm/ioapic.c | 2 +- > virt/kvm/iodev.h | 31 +---- > virt/kvm/kvm_main.c | 40 ++++++- > virt/kvm/msix_mmio.c | 291 +++++++++++++++++++++++++++++++++++++++++++++ > virt/kvm/msix_mmio.h | 26 ++++ > 16 files changed, 591 insertions(+), 51 deletions(-) > create mode 100644 virt/kvm/msix_mmio.c > create mode 100644 virt/kvm/msix_mmio.h -- 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
