[PATCH v9 00/22] KVM: arm64: Fixed features for protected VMs
Fuad Tabba
tabba at google.com
Mon Oct 18 02:51:54 PDT 2021
Hi Marc,
On Wed, Oct 13, 2021 at 1:04 PM Marc Zyngier <maz at kernel.org> wrote:
>
> This is an update on Fuad's series[1].
>
> Instead of going going back and forth over a series that has seen a
> fair few versions, I've opted for simply writing a set of fixes on
> top, hopefully greatly simplifying the handling of most registers, and
> moving things around to suit my own taste (just because I can).
>
> I won't be reposting the initial 11 patches, which is why this series
> in is reply to patch 11.
Thanks for this series. I've reviewed, built it, and tested it with a
dummy protected VM (since we don't have proper protected VMs yet),
which initializes some of the relevant protected VMs metadata as well
as its control registers. So fwiw:
Reviewed-by: Fuad Tabba <tabba at google.com>
And to whatever extent possible at this stage:
Tested-by: Fuad Tabba <tabba at google.com>
Cheers,
/fuad
> Thanks,
>
> M.
>
> [1] https://lore.kernel.org/r/20211010145636.1950948-1-tabba@google.com
>
> Fuad Tabba (8):
> KVM: arm64: Pass struct kvm to per-EC handlers
> KVM: arm64: Add missing field descriptor for MDCR_EL2
> KVM: arm64: Simplify masking out MTE in feature id reg
> KVM: arm64: Add handlers for protected VM System Registers
> KVM: arm64: Initialize trap registers for protected VMs
> KVM: arm64: Move sanitized copies of CPU features
> KVM: arm64: Trap access to pVM restricted features
> KVM: arm64: Handle protected guests at 32 bits
>
> Marc Zyngier (14):
> KVM: arm64: Move __get_fault_info() and co into their own include file
> KVM: arm64: Don't include switch.h into nvhe/kvm-main.c
> KVM: arm64: Move early handlers to per-EC handlers
> KVM: arm64: Fix early exit ptrauth handling
> KVM: arm64: pkvm: Use a single function to expose all id-regs
> KVM: arm64: pkvm: Make the ERR/ERX*_EL1 registers RAZ/WI
> KVM: arm64: pkvm: Drop AArch32-specific registers
> KVM: arm64: pkvm: Drop sysregs that should never be routed to the host
> KVM: arm64: pkvm: Handle GICv3 traps as required
> KVM: arm64: pkvm: Preserve pending SError on exit from AArch32
> KVM: arm64: pkvm: Consolidate include files
> KVM: arm64: pkvm: Move kvm_handle_pvm_restricted around
> KVM: arm64: pkvm: Pass vpcu instead of kvm to
> kvm_get_exit_handler_array()
> KVM: arm64: pkvm: Give priority to standard traps over pvm handling
>
> arch/arm64/include/asm/kvm_arm.h | 1 +
> arch/arm64/include/asm/kvm_asm.h | 1 +
> arch/arm64/include/asm/kvm_host.h | 2 +
> arch/arm64/include/asm/kvm_hyp.h | 5 +
> arch/arm64/kvm/arm.c | 13 +
> arch/arm64/kvm/hyp/include/hyp/fault.h | 75 +++
> arch/arm64/kvm/hyp/include/hyp/switch.h | 235 ++++-----
> .../arm64/kvm/hyp/include/nvhe/fixed_config.h | 200 +++++++
> .../arm64/kvm/hyp/include/nvhe/trap_handler.h | 2 +
> arch/arm64/kvm/hyp/nvhe/Makefile | 2 +-
> arch/arm64/kvm/hyp/nvhe/hyp-main.c | 11 +-
> arch/arm64/kvm/hyp/nvhe/mem_protect.c | 8 +-
> arch/arm64/kvm/hyp/nvhe/pkvm.c | 185 +++++++
> arch/arm64/kvm/hyp/nvhe/setup.c | 3 +
> arch/arm64/kvm/hyp/nvhe/switch.c | 99 ++++
> arch/arm64/kvm/hyp/nvhe/sys_regs.c | 487 ++++++++++++++++++
> arch/arm64/kvm/hyp/vhe/switch.c | 16 +
> arch/arm64/kvm/sys_regs.c | 10 +-
> 18 files changed, 1200 insertions(+), 155 deletions(-)
> create mode 100644 arch/arm64/kvm/hyp/include/hyp/fault.h
> create mode 100644 arch/arm64/kvm/hyp/include/nvhe/fixed_config.h
> create mode 100644 arch/arm64/kvm/hyp/nvhe/pkvm.c
> create mode 100644 arch/arm64/kvm/hyp/nvhe/sys_regs.c
>
> --
> 2.30.2
>
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