Replace the VIRTIO_IOMMU_F_BYPASS feature with VIRTIO_IOMMU_F_BYPASS_CONFIG, which enables a config space bit to switch global bypass on and off.
Add a boot-bypass option, which defaults to 'on' to be in line with other vIOMMUs and to allow running firmware/bootloader that are unaware of the IOMMU. x86 doesn't need a workaround to boot with virtio-iommu anymore. Since v2 [1]: * Added the new bypass bits to the migration stream. As discussed on the v2 thread, we assume that cross-version compatibility is not required for live migration at the moment, so we only increase the version number. Patch 2 says: "We add the bypass field to the migration stream without introducing subsections, based on the assumption that this virtio-iommu device isn't being used in production enough to require cross-version migration at the moment (all previous version required workarounds since they didn't support ACPI and boot-bypass)." [1] https://lore.kernel.org/qemu-devel/20220127142940.671333-1-jean-phili...@linaro.org/ Jean-Philippe Brucker (4): linux-headers: update to v5.17-rc1 virtio-iommu: Default to bypass during boot virtio-iommu: Support bypass domain tests/qtest/virtio-iommu-test: Check bypass config include/hw/virtio/virtio-iommu.h | 1 + include/standard-headers/asm-x86/kvm_para.h | 1 + include/standard-headers/drm/drm_fourcc.h | 11 ++ include/standard-headers/linux/ethtool.h | 1 + include/standard-headers/linux/fuse.h | 60 +++++++- include/standard-headers/linux/pci_regs.h | 142 +++++++++--------- include/standard-headers/linux/virtio_gpio.h | 72 +++++++++ include/standard-headers/linux/virtio_i2c.h | 47 ++++++ include/standard-headers/linux/virtio_iommu.h | 8 +- .../standard-headers/linux/virtio_pcidev.h | 65 ++++++++ include/standard-headers/linux/virtio_scmi.h | 24 +++ linux-headers/asm-generic/unistd.h | 5 +- linux-headers/asm-mips/unistd_n32.h | 2 + linux-headers/asm-mips/unistd_n64.h | 2 + linux-headers/asm-mips/unistd_o32.h | 2 + linux-headers/asm-powerpc/unistd_32.h | 2 + linux-headers/asm-powerpc/unistd_64.h | 2 + linux-headers/asm-riscv/bitsperlong.h | 14 ++ linux-headers/asm-riscv/mman.h | 1 + linux-headers/asm-riscv/unistd.h | 44 ++++++ linux-headers/asm-s390/unistd_32.h | 2 + linux-headers/asm-s390/unistd_64.h | 2 + linux-headers/asm-x86/kvm.h | 16 +- linux-headers/asm-x86/unistd_32.h | 1 + linux-headers/asm-x86/unistd_64.h | 1 + linux-headers/asm-x86/unistd_x32.h | 1 + linux-headers/linux/kvm.h | 17 +++ hw/virtio/virtio-iommu.c | 99 ++++++++++-- tests/qtest/virtio-iommu-test.c | 2 + hw/virtio/trace-events | 4 +- 30 files changed, 561 insertions(+), 90 deletions(-) create mode 100644 include/standard-headers/linux/virtio_gpio.h create mode 100644 include/standard-headers/linux/virtio_i2c.h create mode 100644 include/standard-headers/linux/virtio_pcidev.h create mode 100644 include/standard-headers/linux/virtio_scmi.h create mode 100644 linux-headers/asm-riscv/bitsperlong.h create mode 100644 linux-headers/asm-riscv/mman.h create mode 100644 linux-headers/asm-riscv/unistd.h -- 2.35.1
