[kvmarm:kvm-arm64/nv-wip-v5.0-rc1 73/75] arch/arm/kvm/../../../virt/kvm/arm/mmu.c:1877:14: error: implicit declaration of function 'kvm_s2pud_revoke_read'; did you mean 'kvm_s2pud_mkexec'?

tree: https://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm.git kvm-arm64/nv-wip-v5.0-rc1 head: 688c386ca096f2c1f2eee386697586c88df5d5bc commit: 7fb8b7d728a8ffae11f4c1e263a021de7eb1662b [73/75] arm64: KVM: nv: Restrict S2 RD/WR permissions to match the guest's config: arm-axm55xx_defc

[kvmarm:kvm-arm64/nv-wip-v5.0-rc1 68/75] arch/arm/kvm/../../../virt/kvm/arm/arm.c:352:6: error: implicit declaration of function 'nested_virt_in_use'; did you mean 'isa_virt_to_bus'?

tree: https://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm.git kvm-arm64/nv-wip-v5.0-rc1 head: 688c386ca096f2c1f2eee386697586c88df5d5bc commit: d9adf257e12e66ab30056a8804b70a24ce0dded3 [68/75] fixup! KVM: arm/arm64: nv: Support multiple nested stage 2 mmu structures config: arm-axm55

[kvmarm:kvm-arm64/nv-wip-v5.0-rc1 67/75] arch/arm/kvm/../../../virt/kvm/arm/mmu.c:2487:11: note: in expansion of macro 'atomic_read'

tree: https://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm.git kvm-arm64/nv-wip-v5.0-rc1 head: 688c386ca096f2c1f2eee386697586c88df5d5bc commit: ef4e8878a94ec44d0f883dfab21ecfb45fe33309 [67/75] fixup! KVM: arm/arm64: nv: Support multiple nested stage 2 mmu structures config: arm-axm55

[kvmarm:kvm-arm64/nv-wip-v5.0-rc1 65/75] arch/arm/kvm/../../../virt/kvm/arm/arch_timer.c:893:7: error: implicit declaration of function 'vcpu_el2_e2h_is_set'

tree: https://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm.git kvm-arm64/nv-wip-v5.0-rc1 head: 688c386ca096f2c1f2eee386697586c88df5d5bc commit: bd3721cc25cec20d64c5c073fbc0879067cf86e7 [65/75] arm64: KVM: nv: Add handling of EL2-specific timer registers config: arm-axm55xx_defconfig

[kvmarm:kvm-arm64/nv-wip-v5.0-rc1 59/75] arch/arm/kvm/../../../virt/kvm/arm/vgic/vgic-kvm-device.c:252:7: error: 'KVM_DEV_ARM_VGIC_GRP_MAINT_IRQ' undeclared; did you mean 'KVM_DEV_ARM_VGIC_GRP_NR_IRQS

tree: https://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm.git kvm-arm64/nv-wip-v5.0-rc1 head: 688c386ca096f2c1f2eee386697586c88df5d5bc commit: 43c8e3e9d31cc009b7d37241859505293e494f4d [59/75] KVM: arm64: nv: vgic: Allow userland to set VGIC maintenance IRQ config: arm-axm55xx_defcon

Re: [PATCH 2/3] arm64: KVM: Allow for direct call of HYP functions when using VHE

On Wed, Jan 09, 2019 at 04:01:56PM +, Marc Zyngier wrote: > On 09/01/2019 14:51, Julien Thierry wrote: > > > > > > On 09/01/2019 14:45, Marc Zyngier wrote: > >> Hi Andrew, > >> > >> On 09/01/2019 14:24, Andrew Murray wrote: > >>> On Wed, Jan 09, 2019 at 01:54:34PM +, Marc Zyngier wrote: >

Re: [PATCH 2/3] arm64: KVM: Allow for direct call of HYP functions when using VHE

On 09/01/2019 14:51, Julien Thierry wrote: > > > On 09/01/2019 14:45, Marc Zyngier wrote: >> Hi Andrew, >> >> On 09/01/2019 14:24, Andrew Murray wrote: >>> On Wed, Jan 09, 2019 at 01:54:34PM +, Marc Zyngier wrote: When running VHE, there is no need to jump via some stub to perform a

Re: [PATCH 2/3] arm64: KVM: Allow for direct call of HYP functions when using VHE

On 09/01/2019 14:51, Julien Thierry wrote: > > > On 09/01/2019 14:45, Marc Zyngier wrote: >> Hi Andrew, >> >> On 09/01/2019 14:24, Andrew Murray wrote: >>> On Wed, Jan 09, 2019 at 01:54:34PM +, Marc Zyngier wrote: When running VHE, there is no need to jump via some stub to perform >>>

Re: [PATCH 2/3] arm64: KVM: Allow for direct call of HYP functions when using VHE

On 09/01/2019 14:45, Marc Zyngier wrote: > Hi Andrew, > > On 09/01/2019 14:24, Andrew Murray wrote: >> On Wed, Jan 09, 2019 at 01:54:34PM +, Marc Zyngier wrote: >>> When running VHE, there is no need to jump via some stub to perform >>> a "HYP" function call, as there is a single address sp

Re: [PATCH 2/3] arm64: KVM: Allow for direct call of HYP functions when using VHE

Hi Andrew, On 09/01/2019 14:24, Andrew Murray wrote: > On Wed, Jan 09, 2019 at 01:54:34PM +, Marc Zyngier wrote: >> When running VHE, there is no need to jump via some stub to perform >> a "HYP" function call, as there is a single address space. >> >> Let's thus change kvm_call_hyp() and co to

[kvmarm:kvm-arm64/nv-wip-v5.0-rc1 57/75] arch/arm/kvm/../../../virt/kvm/arm/arm.c:627:25: error: 'KVM_REQ_GUEST_HYP_IRQ_PENDING' undeclared; did you mean 'KVM_REQ_IRQ_PENDING'?

tree: https://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm.git kvm-arm64/nv-wip-v5.0-rc1 head: 688c386ca096f2c1f2eee386697586c88df5d5bc commit: 78eb72890679e738e27f7ca4d06924c283492d70 [57/75] KVM: arm64: nv: Nested GICv3 Support config: arm-axm55xx_defconfig (attached as .config) co

Re: [PATCH 2/3] arm64: KVM: Allow for direct call of HYP functions when using VHE

On Wed, Jan 09, 2019 at 01:54:34PM +, Marc Zyngier wrote: > When running VHE, there is no need to jump via some stub to perform > a "HYP" function call, as there is a single address space. > > Let's thus change kvm_call_hyp() and co to perform a direct call > in this case. Although this result

Re: [PATCH 0/3] arm64: KVM: Allow direct function calls on VHE

On Wed, Jan 09, 2019 at 01:54:32PM +, Marc Zyngier wrote: > It recently appeared that the nasty hack we use to call a HYP function > on a non-VHE system has an interesting side effect on VHE: We wrap any > such call into a hypercall, losing any form of type checking between > the caller and the

[PATCH 0/3] arm64: KVM: Allow direct function calls on VHE

It recently appeared that the nasty hack we use to call a HYP function on a non-VHE system has an interesting side effect on VHE: We wrap any such call into a hypercall, losing any form of type checking between the caller and the callee. This isn't a big deal if you can guarantee to write code tha

[PATCH 1/3] arm/arm64: KVM: Introduce kvm_call_hyp_ret()

Until now, we haven't differentiated between HYP calls that have a return value and those who don't. As we're about to change this, introduce kvm_call_hyp_ret(), and change all call sites that actually make use of a return value. Signed-off-by: Marc Zyngier --- arch/arm/include/asm/kvm_host.h

[PATCH 3/3] arm64: KVM: Drop VHE-specific HYP call stub

We now call VHE code directly, without going through any central dispatching function. Let's drop that code. Signed-off-by: Marc Zyngier --- arch/arm64/kvm/hyp.S | 3 --- arch/arm64/kvm/hyp/hyp-entry.S | 12 2 files changed, 15 deletions(-) diff --git a/arch/arm64/kvm/hy

[PATCH 2/3] arm64: KVM: Allow for direct call of HYP functions when using VHE

When running VHE, there is no need to jump via some stub to perform a "HYP" function call, as there is a single address space. Let's thus change kvm_call_hyp() and co to perform a direct call in this case. Although this results in a bit of code expansion, it allows the compiler to check for type c

[kvmarm:kvm-arm64/nv-wip-v5.0-rc1 56/75] arch/arm/kvm/hyp/switch.c:103:27: error: passing argument 1 of '__vgic_v3_restore_state' from incompatible pointer type

tree: https://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm.git kvm-arm64/nv-wip-v5.0-rc1 head: 688c386ca096f2c1f2eee386697586c88df5d5bc commit: 2f0dfa723fec5361c9784fa63b6af3e83d2486d1 [56/75] KVM: arm64: nv: vgic-v3: Take cpu_if pointer directly instead of vcpu config: arm-axm55xx_d

[kvmarm:kvm-arm64/nv-wip-v5.0-rc1 54/75] arch/arm/kvm/../../../virt/kvm/arm/arch_timer.c:897:7: error: 'SYS_CNTVOFF_EL2' undeclared; did you mean 'SYS_CNTP_CTL_EL0'?

tree: https://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm.git kvm-arm64/nv-wip-v5.0-rc1 head: 688c386ca096f2c1f2eee386697586c88df5d5bc commit: 66df9dda77fe8a8876039d6b07f842989126a584 [54/75] KVM: arm64: nv: Propagate CNTVOFF_EL2 to the virtual EL1 timer config: arm-axm55xx_defconfi

[kvmarm:kvm-arm64/nv-wip-v5.0-rc1 53/75] arch/arm/kvm/../../../virt/kvm/arm/arch_timer.c:78:7: error: implicit declaration of function 'is_hyp_ctxt'; did you mean '__hyp_text'?

tree: https://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm.git kvm-arm64/nv-wip-v5.0-rc1 head: 688c386ca096f2c1f2eee386697586c88df5d5bc commit: 4fb08a5a9975b41829daec65774877666461e75f [53/75] KVM: arm64: nv: arch_timer: Support hyp timer emulation config: arm-axm55xx_defconfig (atta

Re: [kvmarm:kvm-arm64/nv-wip-v5.0-rc1 4/75] arch/arm/kvm/../../../virt/kvm/arm/arch_timer.c:700:7: error: 'SYS_CNTP_TVAL_EL0' undeclared

On Wed, Jan 09, 2019 at 10:09:51AM +, Marc Zyngier wrote: > On 09/01/2019 09:13, André Przywara wrote: > > On 09/01/2019 04:40, kbuild test robot wrote: > > > > Marc, Christoffer, > > > >> tree: https://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm.git > >> kvm-arm64/nv-wip-v5.0-rc

Re: [kvmarm:kvm-arm64/nv-wip-v5.0-rc1 4/75] arch/arm/kvm/../../../virt/kvm/arm/arch_timer.c:700:7: error: 'SYS_CNTP_TVAL_EL0' undeclared

On Wed, 9 Jan 2019 10:09:51 + Marc Zyngier wrote: > On 09/01/2019 09:13, André Przywara wrote: > > On 09/01/2019 04:40, kbuild test robot wrote: > > > > Marc, Christoffer, > > > >> tree: > >> https://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm.git > >> kvm-arm64/nv-wip-v5.0-rc1

Re: [PATCH v4 4/6] arm64/kvm: enable pointer authentication cpufeature conditionally

Hi, On Fri, Jan 4, 2019 at 11:32 PM James Morse wrote: > > Hi Amit, > > On 18/12/2018 07:56, Amit Daniel Kachhap wrote: > > According to userspace settings, pointer authentication cpufeature > > is enabled/disabled from guests. > > This reads like the guest is changing something in the host. Isn'

Re: [PATCH v4 3/6] arm64/kvm: add a userspace option to enable pointer authentication

Hi, On Sat, Jan 5, 2019 at 12:05 AM James Morse wrote: > > Hi Amit, > > On 18/12/2018 07:56, Amit Daniel Kachhap wrote: > > This feature will allow the KVM guest to allow the handling of > > pointer authentication instructions or to treat them as undefined > > if not set. It uses the existing vcp

Re: [kvmarm:kvm-arm64/nv-wip-v5.0-rc1 4/75] arch/arm/kvm/../../../virt/kvm/arm/arch_timer.c:700:7: error: 'SYS_CNTP_TVAL_EL0' undeclared

On 09/01/2019 09:13, André Przywara wrote: > On 09/01/2019 04:40, kbuild test robot wrote: > > Marc, Christoffer, > >> tree: https://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm.git >> kvm-arm64/nv-wip-v5.0-rc1 >> head: 688c386ca096f2c1f2eee386697586c88df5d5bc >> commit: 2b1265c58a8

[kvmarm:kvm-arm64/nv-wip-v5.0-rc1 46/75] arch/arm/kvm/../../../virt/kvm/arm/arm.c:125:8: error: implicit declaration of function 'kvm_init_stage2_mmu'; did you mean 'kvm_free_stage2_pgd'?

tree: https://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm.git kvm-arm64/nv-wip-v5.0-rc1 head: 688c386ca096f2c1f2eee386697586c88df5d5bc commit: 4d8a6cc25603cc92352d861970f1a678411af963 [46/75] KVM: arm64: nv: Move last_vcpu_ran to be per s2 mmu config: arm-axm55xx_defconfig (attached

Re: [PATCH v4 2/6] arm64/kvm: context-switch ptrauth registers

Hi, On Sat, Jan 5, 2019 at 12:05 AM James Morse wrote: > > Hi Amit, > > On 18/12/2018 07:56, Amit Daniel Kachhap wrote: > > When pointer authentication is supported, a guest may wish to use it. > > This patch adds the necessary KVM infrastructure for this to work, with > > a semi-lazy context swi

[kvmarm:kvm-arm64/nv-wip-v5.0-rc1 45/75] arch/arm/kvm/../../../virt/kvm/arm/arm.c:1003:3: error: implicit declaration of function 'kvm_nested_s2_clear'; did you mean '__nodes_clear'?

tree: https://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm.git kvm-arm64/nv-wip-v5.0-rc1 head: 688c386ca096f2c1f2eee386697586c88df5d5bc commit: 3da39279c7b03e5f797de7c283a0de99f69e6a17 [45/75] KVM: arm64: nv: Unmap/flush shadow stage 2 page tables config: arm-axm55xx_defconfig (attac

Re: [kvmarm:kvm-arm64/nv-wip-v5.0-rc1 4/75] arch/arm/kvm/../../../virt/kvm/arm/arch_timer.c:700:7: error: 'SYS_CNTP_TVAL_EL0' undeclared

On 09/01/2019 04:40, kbuild test robot wrote: Marc, Christoffer, > tree: https://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm.git > kvm-arm64/nv-wip-v5.0-rc1 > head: 688c386ca096f2c1f2eee386697586c88df5d5bc > commit: 2b1265c58a873d917e99ac762e243c1274481dbf [4/75] KVM: arm/arm64: >

[kvmarm:kvm-arm64/nv-wip-v5.0-rc1 44/75] arch/arm/kvm/../../../virt/kvm/arm/mmu.c:1982:9: error: implicit declaration of function 'kvm_s2_handle_perm_fault'; did you mean 'handle_mm_fault'?

tree: https://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm.git kvm-arm64/nv-wip-v5.0-rc1 head: 688c386ca096f2c1f2eee386697586c88df5d5bc commit: fbdecc14dd15c696fd86d28247a9b95b4635b8b1 [44/75] KVM: arm64: nv: Forward the guest hypervisor's stage 2 permission faults config: arm-axm55x