On 01/13/2015 04:25 PM, Tomasz Nowicki wrote: Hi Tomasz, > Is there a git repo reference that I can fetch all those patches? > http://www.linux-arm.org/git?p=linux-ap.git does not work for 'git-fetch'. > Thanks in advance! Try: git://linux-arm.org/linux-ap.git (as referenced a bit hidden below ;-) Cheers, Andre. > > Regards, > Tomasz > > On 09.01.2015 12:54, Andre Przywara wrote: >> This is version 6 of the GICv3 guest emulation series. >> This series is now based on v3.19-rc3 plus Eric's explicit >> VGIC_CTRL_INIT patches. >> >> The rebase on top of 3.19-rc and Eric's patches required some reworks >> in 05/19 (introduce vm_ops), which rippled through to patches 08, 12, >> 13 and 15. >> >> The Aarch32 version of the ICC_SGI_EL1 sysreg is now correctly >> trapped, enabling 32-bit guests to use the GICv3 emulation (which >> needs not-yet-upstream patches to enable GICv3 support on ARM). >> >> If a host's device tree has faulty properties for the GICV property >> (unaligned base addresses or wrong region size), we just deny the >> GICv2 emulation and still allow guests to use the GICv3 emulation. >> >> There is now a new patch 18/20, which introduces a >> kvm_check_device_type() function to detect valid GIC emulation models >> for guests. This is much saner and safer than the private GIC specific >> way of achieving this functionality. >> >> Also I added the Acks from Marc (thanks for the review!), but dropped >> the 05/19 Acked-by: due to the above mentioned changes. >> >> For a changelog summary see below, also each patch carries a >> changelog. Patches 01-04, 06, 07, 09-11, 14, 16, 20 are unchanged. >> >> A git repo hosting all these patches lives in the kvm-gicv3/v6 branch >> of: >> http://www.linux-arm.org/git?p=linux-ap.git >> git://linux-arm.org/linux-ap.git >> ----- >> >> GICv3 is the ARM generic interrupt controller designed to overcome >> some limits of the prevalent GICv2. Most notably it lifts the 8-CPU >> limit. Though with Linux-3.17 Marc introduced support for hosts to >> use a GICv3, the CPU limitation still applies to KVM guests, since >> the current code emulates a GICv2 only. >> Also, GICv2 backward compatibility being optional in GICv3, a number >> of systems won't be able to run GICv2 guests. >> >> This patch series provides code to emulate a GICv3 distributor and >> redistributor for any KVM guest. It requires a GICv3 in the host to >> work. With those patches one can run guests efficiently on any GICv3 >> host. It has the following features: >> - Affinity routing (support for up to 255 VCPUs, more possible) >> - System registers (as opposed to MMIO access) >> - No ITS >> - No priority support (as the GICv2 emulation) >> - No save / restore support so far (will be added soon) >> - Only Group1 interrupts support >> >> The first patches actually refactor the current VGIC code to make >> room for a different VGIC model to be dropped in with Patch 15. >> The remaining patches connect the new model to the kernel backend and >> the userland facing code. >> >> The series goes on top of v3.19-rc3 plus Eric's init rework patches. >> The necessary patches for kvmtool to enable the guest's GICv3 have >> been posted here before [2], an updated version will follow soon. >> >> There was some testing on the fast model with some I/O and interrupt >> affinity shuffling in a Linux guest with a varying number of VCPUs as >> well as some testing on a Juno board (GICv2 only, to spot regressions). >> >> Please review and test. >> I would be grateful for people to test for GICv2 regressions also >> (so on a GICv2 host with current kvmtool/qemu), as there is quite >> some refactoring on that front. >> >> Much of the code was inspired by MarcZ, also kudos to him for doing >> the rather painful rebase on top of v3.17-rc1. >> >> Cheers, >> Andre. >> >> [1] http://www.linux-arm.org/git?p=linux-ap.git >> [2] https://lists.cs.columbia.edu/pipermail/kvmarm/2014-June/010086.html >> >> Changes v5 ... v6: >> * adapt to v3.19-rc changes >> * allow GICv3 emulation in case of wrong GIC device tree properties >> * allow 32-bit guests to use GICv3 >> * introduce new kvm_check_device_type() function >> >> Changes v4 ... v5: >> * fix size of GICD_IROUTER region >> * fix compilation on ARM with VGIC not configured >> * properly fix the remaining FIXME at the GICv3 memory allocation >> * minor style changes, comments and commit messages fixes >> >> Changes v3 ... v4: >> * bug-fix in handling GICv3 redistributor CFG register >> * move set/get_lr from gic_vm_ops back to vgic_ops (get rid of v3 06/19) >> * getting rid of init_emul() at all >> * rework guest GIC model initialization >> * use non-atomic bit-set and bit-clear functions >> * split up handle_mmio_misc* into multiple functions >> * refine handling of some reserved registers >> * use symbolic names for ICC_SGI1R_EL1 register fields (new patch 16/19) >> * move private parameter from MMIO accessors to struct kvm_mmio_exit >> * added documentation of new GICv3 guest device >> * added lots of comments >> * some renaming of identifiers >> * minor changes in style and code flow of various functions >> >> Changes v2 ... v3: >> * rebase to v3.18-rc2 >> * adapt to new kvm_register_device() function >> * split up vm_ops patch and the GICv2 split-off patch to ease review >> * various smaller changes due to Christoffer's review >> * fix compilation for arm >> * remove support for trapping SGI sysreg accesses on arm hosts >> >> Changes v1 ... v2: >> * rebase to v3.17-rc1, caused quite some changes to the init code >> * new 9/15 patch to make 10/15 smaller >> * fix wrongly ordered cp15 register trap entry (MarcZ) >> * fix SGI broadcast (thanks to wanghaibin for spotting) >> * fix broken bailout path in kvm_vgic_create (wanghaibin) >> * check return value of init_emulation_ops() (wanghaibin) >> * fix return value check in vgic_[sg]et_attr() >> * add header inclusion guards >> * remove double definition of VCPU_NOT_ALLOCATED >> * some code move-around >> * whitespace fixes >> >> Andre Przywara (20): >> arm/arm64: KVM: rework MPIDR assignment and add accessors >> arm/arm64: KVM: pass down user space provided GIC type into vGIC code >> arm/arm64: KVM: refactor vgic_handle_mmio() function >> arm/arm64: KVM: wrap 64 bit MMIO accesses with two 32 bit ones >> arm/arm64: KVM: introduce per-VM ops >> arm/arm64: KVM: move kvm_register_device_ops() into vGIC probing >> arm/arm64: KVM: dont rely on a valid GICH base address >> arm/arm64: KVM: make the maximum number of vCPUs a per-VM value >> arm/arm64: KVM: make the value of ICC_SRE_EL1 a per-VM variable >> arm/arm64: KVM: refactor MMIO accessors >> arm/arm64: KVM: refactor/wrap vgic_set/get_attr() >> arm/arm64: KVM: add vgic.h header file >> arm/arm64: KVM: split GICv2 specific emulation code from vgic.c >> arm/arm64: KVM: add opaque private pointer to MMIO data >> arm/arm64: KVM: add virtual GICv3 distributor emulation >> arm64: GICv3: introduce symbolic names for GICv3 ICC_SGI1R_EL1 fields >> arm64: KVM: add SGI generation register emulation >> KVM: introduce kvm_check_device_type() >> arm/arm64: KVM: enable kernel side of GICv3 emulation >> arm/arm64: KVM: allow userland to request a virtual GICv3 >> >> Documentation/virtual/kvm/devices/arm-vgic.txt | 22 +- >> arch/arm/include/asm/kvm_emulate.h | 5 +- >> arch/arm/include/asm/kvm_host.h | 3 + >> arch/arm/include/asm/kvm_mmio.h | 1 + >> arch/arm/kvm/Makefile | 1 + >> arch/arm/kvm/arm.c | 23 +- >> arch/arm/kvm/psci.c | 17 +- >> arch/arm64/include/asm/kvm_emulate.h | 5 +- >> arch/arm64/include/asm/kvm_host.h | 5 + >> arch/arm64/include/asm/kvm_mmio.h | 1 + >> arch/arm64/include/uapi/asm/kvm.h | 7 + >> arch/arm64/kernel/asm-offsets.c | 1 + >> arch/arm64/kvm/Makefile | 2 + >> arch/arm64/kvm/sys_regs.c | 40 +- >> arch/arm64/kvm/vgic-v3-switch.S | 14 +- >> drivers/irqchip/irq-gic-v3.c | 14 +- >> include/kvm/arm_vgic.h | 41 +- >> include/linux/irqchip/arm-gic-v3.h | 44 + >> include/linux/kvm_host.h | 3 + >> include/uapi/linux/kvm.h | 2 + >> virt/kvm/arm/vgic-v2-emul.c | 849 ++++++++++++++++++ >> virt/kvm/arm/vgic-v2.c | 3 + >> virt/kvm/arm/vgic-v3-emul.c | 1038 ++++++++++++++++++++++ >> virt/kvm/arm/vgic-v3.c | 80 +- >> virt/kvm/arm/vgic.c | 1095 ++++++------------------ >> virt/kvm/arm/vgic.h | 123 +++ >> virt/kvm/kvm_main.c | 33 +- >> 27 files changed, 2555 insertions(+), 917 deletions(-) >> create mode 100644 virt/kvm/arm/vgic-v2-emul.c >> create mode 100644 virt/kvm/arm/vgic-v3-emul.c >> create mode 100644 virt/kvm/arm/vgic.h >> > _______________________________________________ kvmarm mailing list kvmarm@xxxxxxxxxxxxxxxxxxxxx https://lists.cs.columbia.edu/mailman/listinfo/kvmarm
