hw/arm/virt.c | 8 +++++++- hw/intc/arm_gicv3_common.c | 1 + hw/intc/arm_gicv3_kvm.c | 25 +++++++++++++++++++++++++ include/hw/intc/arm_gicv3_common.h | 1 + linux-headers/asm-arm64/kvm.h | 2 ++ linux-headers/linux/kvm.h | 1 + target/arm/cpu.h | 2 +- target/arm/kvm64.c | 21 +++++++++++++++++++++ target/arm/kvm_arm.h | 12 ++++++++++++ 9 files changed, 71 insertions(+), 2 deletions(-)
This series adds ARMv8.3/8.4 nested virtualization support in KVM mode.
To enable nested virtualization for a guest, the host must expose EL2
support via QEMU command line switches:
-machine virt,accel=kvm,virtualization=on
Inspired on Haibo Xu's previous work [0][1], Marc Zyngier's kvmtool branch [2]
and kernel patches [3] on nested virtualization for aarch64, this has been
tested on an Ampere implementation.
This series adapts previous work on top of v7.2.0, it considers comments given
at the time and preserves authorship of the original patches.
[0]: https://lore.kernel.org/qemu-devel/cover.1616052889.git.haibo.xu@linaro.org/
[1]: https://lore.kernel.org/qemu-devel/cover.1617281290.git.haibo.xu@linaro.org/
[2]: https://git.kernel.org/pub/scm/linux/kernel/git/maz/kvmtool.git/log/?h=arm64/nv-5.16
[3]: https://lore.kernel.org/linux-arm-kernel/20230131092504.2880505-1-maz@kernel.org/
Miguel Luis (5):
linux-headers: [kvm,arm64] add the necessary definitions to match host
kernel
hw/intc/gicv3: add support for setting KVM vGIC maintenance IRQ
target/arm/kvm: add helper to detect EL2 when using KVM
target/arm: enable feature ARM_FEATURE_EL2 if EL2 is supported
arm/virt: provide virtualization extensions to the guest
hw/arm/virt.c | 8 +++++++-
hw/intc/arm_gicv3_common.c | 1 +
hw/intc/arm_gicv3_kvm.c | 25 +++++++++++++++++++++++++
include/hw/intc/arm_gicv3_common.h | 1 +
linux-headers/asm-arm64/kvm.h | 2 ++
linux-headers/linux/kvm.h | 1 +
target/arm/cpu.h | 2 +-
target/arm/kvm64.c | 21 +++++++++++++++++++++
target/arm/kvm_arm.h | 12 ++++++++++++
9 files changed, 71 insertions(+), 2 deletions(-)
--
2.39.2
Hi Miguel, On 2/27/23 17:37, Miguel Luis wrote: > This series adds ARMv8.3/8.4 nested virtualization support in KVM mode. > > To enable nested virtualization for a guest, the host must expose EL2 > support via QEMU command line switches: > > -machine virt,accel=kvm,virtualization=on > > Inspired on Haibo Xu's previous work [0][1], Marc Zyngier's kvmtool branch [2] > and kernel patches [3] on nested virtualization for aarch64, this has been > tested on an Ampere implementation. > > This series adapts previous work on top of v7.2.0, it considers comments given > at the time and preserves authorship of the original patches. > > [0]: https://lore.kernel.org/qemu-devel/cover.1616052889.git.haibo.xu@linaro.org/ > [1]: https://lore.kernel.org/qemu-devel/cover.1617281290.git.haibo.xu@linaro.org/ > [2]: https://git.kernel.org/pub/scm/linux/kernel/git/maz/kvmtool.git/log/?h=arm64/nv-5.16 > [3]: https://lore.kernel.org/linux-arm-kernel/20230131092504.2880505-1-maz@kernel.org/ I rebased the series on top of v8.2. I was able to boot some L2 guests with it, although it still does not work with guests featuring edk2. Do you plan to send a respin or may I do? Thanks Eric > > Miguel Luis (5): > linux-headers: [kvm,arm64] add the necessary definitions to match host > kernel > hw/intc/gicv3: add support for setting KVM vGIC maintenance IRQ > target/arm/kvm: add helper to detect EL2 when using KVM > target/arm: enable feature ARM_FEATURE_EL2 if EL2 is supported > arm/virt: provide virtualization extensions to the guest > > hw/arm/virt.c | 8 +++++++- > hw/intc/arm_gicv3_common.c | 1 + > hw/intc/arm_gicv3_kvm.c | 25 +++++++++++++++++++++++++ > include/hw/intc/arm_gicv3_common.h | 1 + > linux-headers/asm-arm64/kvm.h | 2 ++ > linux-headers/linux/kvm.h | 1 + > target/arm/cpu.h | 2 +- > target/arm/kvm64.c | 21 +++++++++++++++++++++ > target/arm/kvm_arm.h | 12 ++++++++++++ > 9 files changed, 71 insertions(+), 2 deletions(-) >
Hi Eric, > On 8 Feb 2024, at 15:55, Eric Auger <eauger@redhat.com> wrote: > > Hi Miguel, > > On 2/27/23 17:37, Miguel Luis wrote: >> This series adds ARMv8.3/8.4 nested virtualization support in KVM mode. >> >> To enable nested virtualization for a guest, the host must expose EL2 >> support via QEMU command line switches: >> >> -machine virt,accel=kvm,virtualization=on >> >> Inspired on Haibo Xu's previous work [0][1], Marc Zyngier's kvmtool branch [2] >> and kernel patches [3] on nested virtualization for aarch64, this has been >> tested on an Ampere implementation. >> >> This series adapts previous work on top of v7.2.0, it considers comments given >> at the time and preserves authorship of the original patches. >> >> [0]: https://lore.kernel.org/qemu-devel/cover.1616052889.git.haibo.xu@linaro.org/ >> [1]: https://lore.kernel.org/qemu-devel/cover.1617281290.git.haibo.xu@linaro.org/ >> [2]: https://git.kernel.org/pub/scm/linux/kernel/git/maz/kvmtool.git/log/?h=arm64/nv-5.16 >> [3]: https://lore.kernel.org/linux-arm-kernel/20230131092504.2880505-1-maz@kernel.org/ > > I rebased the series on top of v8.2. I was able to boot some L2 guests > with it, although it still does not work with guests featuring edk2. > > Do you plan to send a respin or may I do? > I do not have a short-term respin planned. Please, feel free to do. Thanks Miguel > Thanks > > Eric >> >> Miguel Luis (5): >> linux-headers: [kvm,arm64] add the necessary definitions to match host >> kernel >> hw/intc/gicv3: add support for setting KVM vGIC maintenance IRQ >> target/arm/kvm: add helper to detect EL2 when using KVM >> target/arm: enable feature ARM_FEATURE_EL2 if EL2 is supported >> arm/virt: provide virtualization extensions to the guest >> >> hw/arm/virt.c | 8 +++++++- >> hw/intc/arm_gicv3_common.c | 1 + >> hw/intc/arm_gicv3_kvm.c | 25 +++++++++++++++++++++++++ >> include/hw/intc/arm_gicv3_common.h | 1 + >> linux-headers/asm-arm64/kvm.h | 2 ++ >> linux-headers/linux/kvm.h | 1 + >> target/arm/cpu.h | 2 +- >> target/arm/kvm64.c | 21 +++++++++++++++++++++ >> target/arm/kvm_arm.h | 12 ++++++++++++ >> 9 files changed, 71 insertions(+), 2 deletions(-)
Hi Miguel, On 2/8/24 18:33, Miguel Luis wrote: > Hi Eric, > >> On 8 Feb 2024, at 15:55, Eric Auger <eauger@redhat.com> wrote: >> >> Hi Miguel, >> >> On 2/27/23 17:37, Miguel Luis wrote: >>> This series adds ARMv8.3/8.4 nested virtualization support in KVM mode. >>> >>> To enable nested virtualization for a guest, the host must expose EL2 >>> support via QEMU command line switches: >>> >>> -machine virt,accel=kvm,virtualization=on >>> >>> Inspired on Haibo Xu's previous work [0][1], Marc Zyngier's kvmtool branch [2] >>> and kernel patches [3] on nested virtualization for aarch64, this has been >>> tested on an Ampere implementation. >>> >>> This series adapts previous work on top of v7.2.0, it considers comments given >>> at the time and preserves authorship of the original patches. >>> >>> [0]: https://lore.kernel.org/qemu-devel/cover.1616052889.git.haibo.xu@linaro.org/ >>> [1]: https://lore.kernel.org/qemu-devel/cover.1617281290.git.haibo.xu@linaro.org/ >>> [2]: https://git.kernel.org/pub/scm/linux/kernel/git/maz/kvmtool.git/log/?h=arm64/nv-5.16 >>> [3]: https://lore.kernel.org/linux-arm-kernel/20230131092504.2880505-1-maz@kernel.org/ >> >> I rebased the series on top of v8.2. I was able to boot some L2 guests >> with it, although it still does not work with guests featuring edk2. >> >> Do you plan to send a respin or may I do? >> > > I do not have a short-term respin planned. > Please, feel free to do. OK thanks. I will send it tomorrow. Eric > > Thanks > > Miguel > >> Thanks >> >> Eric >>> >>> Miguel Luis (5): >>> linux-headers: [kvm,arm64] add the necessary definitions to match host >>> kernel >>> hw/intc/gicv3: add support for setting KVM vGIC maintenance IRQ >>> target/arm/kvm: add helper to detect EL2 when using KVM >>> target/arm: enable feature ARM_FEATURE_EL2 if EL2 is supported >>> arm/virt: provide virtualization extensions to the guest >>> >>> hw/arm/virt.c | 8 +++++++- >>> hw/intc/arm_gicv3_common.c | 1 + >>> hw/intc/arm_gicv3_kvm.c | 25 +++++++++++++++++++++++++ >>> include/hw/intc/arm_gicv3_common.h | 1 + >>> linux-headers/asm-arm64/kvm.h | 2 ++ >>> linux-headers/linux/kvm.h | 1 + >>> target/arm/cpu.h | 2 +- >>> target/arm/kvm64.c | 21 +++++++++++++++++++++ >>> target/arm/kvm_arm.h | 12 ++++++++++++ >>> 9 files changed, 71 insertions(+), 2 deletions(-) > >
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