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From: Marc Zyngier <marc.zyngier@arm.com>
To: Alexandru Elisei <alexandru.elisei@arm.com>,
	linux-arm-kernel@lists.infradead.org,
	kvmarm@lists.cs.columbia.edu, kvm@vger.kernel.org
Cc: Andre Przywara <andre.przywara@arm.com>,
	Dave Martin <Dave.Martin@arm.com>
Subject: Re: [PATCH 35/59] KVM: arm/arm64: nv: Support multiple nested stage 2 mmu structures
Date: Wed, 3 Jul 2019 14:47:33 +0100
Message-ID: <0e0de9a8-b165-572e-af8f-6828e7aee49f@arm.com> (raw)
In-Reply-To: <6a59df67-1b5e-6737-449c-d779537adf3e@arm.com>

On 25/06/2019 13:19, Alexandru Elisei wrote:
> On 6/21/19 10:38 AM, Marc Zyngier wrote:
>> From: Christoffer Dall <christoffer.dall@arm.com>
>>
>> Add stage 2 mmu data structures for virtual EL2 and for nested guests.
>> We don't yet populate shadow stage 2 page tables, but we now have a
>> framework for getting to a shadow stage 2 pgd.
>>
>> We allocate twice the number of vcpus as stage 2 mmu structures because
>> that's sufficient for each vcpu running two VMs without having to flush
>> the stage 2 page tables.
>>
>> Signed-off-by: Christoffer Dall <christoffer.dall@arm.com>
>> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
>> ---
>>  arch/arm/include/asm/kvm_host.h     |   4 +
>>  arch/arm/include/asm/kvm_mmu.h      |   3 +
>>  arch/arm64/include/asm/kvm_host.h   |  28 +++++
>>  arch/arm64/include/asm/kvm_mmu.h    |   8 ++
>>  arch/arm64/include/asm/kvm_nested.h |   7 ++
>>  arch/arm64/kvm/nested.c             | 172 ++++++++++++++++++++++++++++
>>  virt/kvm/arm/arm.c                  |  16 ++-
>>  virt/kvm/arm/mmu.c                  |  31 ++---
>>  8 files changed, 254 insertions(+), 15 deletions(-)
>>
>> diff --git a/arch/arm/include/asm/kvm_host.h b/arch/arm/include/asm/kvm_host.h
>> index e3217c4ad25b..b821eb2383ad 100644
>> --- a/arch/arm/include/asm/kvm_host.h
>> +++ b/arch/arm/include/asm/kvm_host.h
>> @@ -424,4 +424,8 @@ static inline bool kvm_arm_vcpu_is_finalized(struct kvm_vcpu *vcpu)
>>  	return true;
>>  }
>>  
>> +static inline void kvm_vcpu_load_hw_mmu(struct kvm_vcpu *vcpu) {}
>> +static inline void kvm_vcpu_put_hw_mmu(struct kvm_vcpu *vcpu) {}
>> +static inline int kvm_vcpu_init_nested(struct kvm_vcpu *vcpu) { return 0; }
>> +
>>  #endif /* __ARM_KVM_HOST_H__ */
>> diff --git a/arch/arm/include/asm/kvm_mmu.h b/arch/arm/include/asm/kvm_mmu.h
>> index be23e3f8e08c..e6984b6da2ce 100644
>> --- a/arch/arm/include/asm/kvm_mmu.h
>> +++ b/arch/arm/include/asm/kvm_mmu.h
>> @@ -420,6 +420,9 @@ static inline int hyp_map_aux_data(void)
>>  
>>  static inline void kvm_set_ipa_limit(void) {}
>>  
>> +static inline void kvm_init_s2_mmu(struct kvm_s2_mmu *mmu) {}
>> +static inline void kvm_init_nested(struct kvm *kvm) {}
>> +
>>  static __always_inline u64 kvm_get_vttbr(struct kvm_s2_mmu *mmu)
>>  {
>>  	struct kvm_vmid *vmid = &mmu->vmid;
>> diff --git a/arch/arm64/include/asm/kvm_host.h b/arch/arm64/include/asm/kvm_host.h
>> index 3dee5e17a4ee..cc238de170d2 100644
>> --- a/arch/arm64/include/asm/kvm_host.h
>> +++ b/arch/arm64/include/asm/kvm_host.h
>> @@ -88,11 +88,39 @@ struct kvm_s2_mmu {
>>  	phys_addr_t	pgd_phys;
>>  
>>  	struct kvm *kvm;
>> +
>> +	/*
>> +	 * For a shadow stage-2 MMU, the virtual vttbr programmed by the guest
>> +	 * hypervisor.  Unused for kvm_arch->mmu. Set to 1 when the structure
>> +	 * contains no valid information.
>> +	 */
>> +	u64	vttbr;
>> +
>> +	/* true when this represents a nested context where virtual HCR_EL2.VM == 1 */
>> +	bool	nested_stage2_enabled;
>> +
>> +	/*
>> +	 *  0: Nobody is currently using this, check vttbr for validity
>> +	 * >0: Somebody is actively using this.
>> +	 */
>> +	atomic_t refcnt;
>>  };
>>  
>> +static inline bool kvm_s2_mmu_valid(struct kvm_s2_mmu *mmu)
>> +{
>> +	return !(mmu->vttbr & 1);
>> +}
>> +
>>  struct kvm_arch {
>>  	struct kvm_s2_mmu mmu;
>>  
>> +	/*
>> +	 * Stage 2 paging stage for VMs with nested virtual using a virtual
>> +	 * VMID.
>> +	 */
>> +	struct kvm_s2_mmu *nested_mmus;
>> +	size_t nested_mmus_size;
>> +
>>  	/* VTCR_EL2 value for this VM */
>>  	u64    vtcr;
>>  
>> diff --git a/arch/arm64/include/asm/kvm_mmu.h b/arch/arm64/include/asm/kvm_mmu.h
>> index 1eb6e0ca61c2..32bcaa1845dc 100644
>> --- a/arch/arm64/include/asm/kvm_mmu.h
>> +++ b/arch/arm64/include/asm/kvm_mmu.h
>> @@ -100,6 +100,7 @@ alternative_cb_end
>>  #include <asm/mmu_context.h>
>>  #include <asm/pgtable.h>
>>  #include <asm/kvm_emulate.h>
>> +#include <asm/kvm_nested.h>
>>  
>>  void kvm_update_va_mask(struct alt_instr *alt,
>>  			__le32 *origptr, __le32 *updptr, int nr_inst);
>> @@ -164,6 +165,7 @@ int create_hyp_exec_mappings(phys_addr_t phys_addr, size_t size,
>>  			     void **haddr);
>>  void free_hyp_pgds(void);
>>  
>> +void kvm_unmap_stage2_range(struct kvm_s2_mmu *mmu, phys_addr_t start, u64 size);
>>  void stage2_unmap_vm(struct kvm *kvm);
>>  int kvm_alloc_stage2_pgd(struct kvm_s2_mmu *mmu);
>>  void kvm_free_stage2_pgd(struct kvm_s2_mmu *mmu);
>> @@ -635,5 +637,11 @@ static __always_inline void __load_guest_stage2(struct kvm_s2_mmu *mmu)
>>  	asm(ALTERNATIVE("nop", "isb", ARM64_WORKAROUND_1165522));
>>  }
>>  
>> +static inline u64 get_vmid(u64 vttbr)
>> +{
>> +	return (vttbr & VTTBR_VMID_MASK(kvm_get_vmid_bits())) >>
>> +		VTTBR_VMID_SHIFT;
>> +}
>> +
>>  #endif /* __ASSEMBLY__ */
>>  #endif /* __ARM64_KVM_MMU_H__ */
>> diff --git a/arch/arm64/include/asm/kvm_nested.h b/arch/arm64/include/asm/kvm_nested.h
>> index 61e71d0d2151..d4021d0892bd 100644
>> --- a/arch/arm64/include/asm/kvm_nested.h
>> +++ b/arch/arm64/include/asm/kvm_nested.h
>> @@ -10,6 +10,13 @@ static inline bool nested_virt_in_use(const struct kvm_vcpu *vcpu)
>>  		test_bit(KVM_ARM_VCPU_NESTED_VIRT, vcpu->arch.features);
>>  }
>>  
>> +extern void kvm_init_nested(struct kvm *kvm);
>> +extern int kvm_vcpu_init_nested(struct kvm_vcpu *vcpu);
>> +extern void kvm_init_s2_mmu(struct kvm_s2_mmu *mmu);
>> +extern struct kvm_s2_mmu *lookup_s2_mmu(struct kvm *kvm, u64 vttbr, u64 hcr);
>> +extern void kvm_vcpu_load_hw_mmu(struct kvm_vcpu *vcpu);
>> +extern void kvm_vcpu_put_hw_mmu(struct kvm_vcpu *vcpu);
>> +
>>  int handle_wfx_nested(struct kvm_vcpu *vcpu, bool is_wfe);
>>  extern bool forward_traps(struct kvm_vcpu *vcpu, u64 control_bit);
>>  extern bool forward_nv_traps(struct kvm_vcpu *vcpu);
>> diff --git a/arch/arm64/kvm/nested.c b/arch/arm64/kvm/nested.c
>> index 3872e3cf1691..4b38dc5c0be3 100644
>> --- a/arch/arm64/kvm/nested.c
>> +++ b/arch/arm64/kvm/nested.c
>> @@ -18,7 +18,161 @@
>>  #include <linux/kvm.h>
>>  #include <linux/kvm_host.h>
>>  
>> +#include <asm/kvm_arm.h>
>>  #include <asm/kvm_emulate.h>
>> +#include <asm/kvm_mmu.h>
>> +#include <asm/kvm_nested.h>
>> +
>> +void kvm_init_nested(struct kvm *kvm)
>> +{
>> +	kvm_init_s2_mmu(&kvm->arch.mmu);
>> +
>> +	kvm->arch.nested_mmus = NULL;
>> +	kvm->arch.nested_mmus_size = 0;
>> +}
>> +
>> +int kvm_vcpu_init_nested(struct kvm_vcpu *vcpu)
>> +{
>> +	struct kvm *kvm = vcpu->kvm;
>> +	struct kvm_s2_mmu *tmp;
>> +	int num_mmus;
>> +	int ret = -ENOMEM;
>> +
>> +	if (!test_bit(KVM_ARM_VCPU_NESTED_VIRT, vcpu->arch.features))
>> +		return 0;
>> +
>> +	if (!cpus_have_const_cap(ARM64_HAS_NESTED_VIRT))
>> +		return -EINVAL;
> 
> Here we fail if KVM_ARM_VCPU_NESTED_VIRT features was requested from the virtual
> vcpu, but the nested capability isn't present. This function is called as a
> result of the KVM_ARM_VCPU_INIT, and when this function fails, the
> KVM_ARM_VCPU_INIT ioctl will also fail. This means that we cannot have a vcpu
> with the nested virt feature on a system which doesn't support nested
> virtualization.
> 
> However, commit 04/59 "KVM: arm64: nv: Introduce nested virtualization VCPU
> feature" added the function nested_virt_in_use (in
> arch/arm64/include/asm/kvm_nested.h) which checks for **both** conditions before
> returning true. I believe the capability check is not required in
> nested_virt_in_use.

The capability check is a static branch, meaning that if there is no
actual evaluation, just a branch. If you remove this branch, you end-up
checking the feature bit even on systems that do not have NV, and that'd
be a measurable performance drag.

Thanks,

	M.
-- 
Jazz is not dead. It just smells funny...
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  reply index

Thread overview: 177+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-06-21  9:37 [PATCH 00/59] KVM: arm64: ARMv8.3 Nested Virtualization support Marc Zyngier
2019-06-21  9:37 ` [PATCH 01/59] KVM: arm64: Migrate _elx sysreg accessors to msr_s/mrs_s Marc Zyngier
2019-06-24 11:16   ` Dave Martin
2019-06-24 12:59   ` Alexandru Elisei
2019-07-03 12:32     ` Marc Zyngier
2019-06-21  9:37 ` [PATCH 02/59] KVM: arm64: Move __load_guest_stage2 to kvm_mmu.h Marc Zyngier
2019-06-24 11:19   ` Dave Martin
2019-07-03  9:30     ` Marc Zyngier
2019-07-03 16:13       ` Dave Martin
2019-06-21  9:37 ` [PATCH 03/59] arm64: Add ARM64_HAS_NESTED_VIRT cpufeature Marc Zyngier
2019-06-21 13:08   ` Julien Thierry
2019-06-21 13:22     ` Marc Zyngier
2019-06-21 13:44   ` Suzuki K Poulose
2019-06-24 11:24   ` Dave Martin
2019-06-21  9:37 ` [PATCH 04/59] KVM: arm64: nv: Introduce nested virtualization VCPU feature Marc Zyngier
2019-06-21 13:08   ` Julien Thierry
2019-06-24 11:28   ` Dave Martin
2019-07-03 11:53     ` Marc Zyngier
2019-07-03 16:27       ` Dave Martin
2019-06-24 11:43   ` Dave Martin
2019-07-03 11:56     ` Marc Zyngier
2019-07-03 16:24       ` Dave Martin
2019-06-21  9:37 ` [PATCH 05/59] KVM: arm64: nv: Reset VCPU to EL2 registers if VCPU nested virt is set Marc Zyngier
2019-06-24 10:19   ` Suzuki K Poulose
2019-06-24 11:38   ` Dave Martin
2019-06-21  9:37 ` [PATCH 06/59] KVM: arm64: nv: Allow userspace to set PSR_MODE_EL2x Marc Zyngier
2019-06-21 13:24   ` Julien Thierry
2019-06-21 13:50     ` Marc Zyngier
2019-06-24 12:48       ` Dave Martin
2019-07-03  9:21         ` Marc Zyngier
2019-07-04 10:00           ` Dave Martin
2019-06-21  9:37 ` [PATCH 07/59] KVM: arm64: nv: Add EL2 system registers to vcpu context Marc Zyngier
2019-06-24 12:54   ` Dave Martin
2019-07-03 12:20     ` Marc Zyngier
2019-07-03 16:31       ` Dave Martin
2019-06-24 15:47   ` Alexandru Elisei
2019-07-03 13:20     ` Marc Zyngier
2019-07-03 16:01       ` Marc Zyngier
2019-07-01 16:36   ` Suzuki K Poulose
2019-06-21  9:37 ` [PATCH 08/59] KVM: arm64: nv: Reset VMPIDR_EL2 and VPIDR_EL2 to sane values Marc Zyngier
2019-06-24 12:59   ` Dave Martin
2019-06-21  9:37 ` [PATCH 09/59] KVM: arm64: nv: Add nested virt VCPU primitives for vEL2 VCPU state Marc Zyngier
2019-06-24 13:08   ` Dave Martin
2019-06-21  9:37 ` [PATCH 10/59] KVM: arm64: nv: Support virtual EL2 exceptions Marc Zyngier
2019-07-08 13:56   ` Steven Price
2019-06-21  9:37 ` [PATCH 11/59] KVM: arm64: nv: Inject HVC exceptions to the virtual EL2 Marc Zyngier
2019-06-25 13:13   ` Alexandru Elisei
2019-07-03 14:16     ` Marc Zyngier
2019-07-30 14:08     ` Alexandru Elisei
2019-06-21  9:37 ` [PATCH 12/59] KVM: arm64: nv: Handle trapped ERET from " Marc Zyngier
2019-07-02 12:00   ` Alexandru Elisei
2019-06-21  9:37 ` [PATCH 13/59] KVM: arm64: nv: Handle virtual EL2 registers in vcpu_read/write_sys_reg() Marc Zyngier
2019-06-24 12:42   ` Julien Thierry
2019-06-25 14:02     ` Alexandru Elisei
2019-07-03 12:15     ` Marc Zyngier
2019-07-03 15:21       ` Julien Thierry
2019-06-25 15:18   ` Alexandru Elisei
2019-07-01  9:58     ` Alexandru Elisei
2019-07-03 15:59     ` Marc Zyngier
2019-07-03 16:32       ` Alexandru Elisei
2019-07-04 14:39         ` Marc Zyngier
2019-06-26 15:04   ` Alexandru Elisei
2019-07-04 15:05     ` Marc Zyngier
2019-07-01 12:10   ` Alexandru Elisei
2019-06-21  9:37 ` [PATCH 14/59] KVM: arm64: nv: Handle SPSR_EL2 specially Marc Zyngier
2019-06-21  9:37 ` [PATCH 15/59] KVM: arm64: nv: Refactor vcpu_{read,write}_sys_reg Marc Zyngier
2019-06-24 15:07   ` Julien Thierry
2019-07-03 13:09     ` Marc Zyngier
2019-06-27  9:21   ` Alexandru Elisei
2019-07-04 15:15     ` Marc Zyngier
2019-06-21  9:38 ` [PATCH 16/59] KVM: arm64: nv: Save/Restore vEL2 sysregs Marc Zyngier
2019-06-25  8:48   ` Julien Thierry
2019-07-03 13:42     ` Marc Zyngier
2019-07-01 12:09   ` Alexandru Elisei
2019-08-21 11:57   ` Alexandru Elisei
2019-06-21  9:38 ` [PATCH 17/59] KVM: arm64: nv: Emulate PSTATE.M for a guest hypervisor Marc Zyngier
2019-06-21  9:38 ` [PATCH 18/59] KVM: arm64: nv: Trap EL1 VM register accesses in virtual EL2 Marc Zyngier
2019-07-01 16:12   ` Alexandru Elisei
2019-06-21  9:38 ` [PATCH 19/59] KVM: arm64: nv: Trap SPSR_EL1, ELR_EL1 and VBAR_EL1 from " Marc Zyngier
2019-06-21  9:38 ` [PATCH 20/59] KVM: arm64: nv: Trap CPACR_EL1 access in " Marc Zyngier
2019-07-01 16:40   ` Alexandru Elisei
2019-06-21  9:38 ` [PATCH 21/59] KVM: arm64: nv: Set a handler for the system instruction traps Marc Zyngier
2019-06-25 12:55   ` Julien Thierry
2019-07-03 14:15     ` Marc Zyngier
2019-06-21  9:38 ` [PATCH 22/59] KVM: arm64: nv: Handle PSCI call via smc from the guest Marc Zyngier
2019-06-21  9:38 ` [PATCH 23/59] KVM: arm64: nv: Respect virtual HCR_EL2.TWX setting Marc Zyngier
2019-06-25 14:19   ` Julien Thierry
2019-07-02 12:54     ` Alexandru Elisei
2019-07-03 14:18     ` Marc Zyngier
2019-06-21  9:38 ` [PATCH 24/59] KVM: arm64: nv: Respect virtual CPTR_EL2.TFP setting Marc Zyngier
2019-06-21  9:38 ` [PATCH 25/59] KVM: arm64: nv: Don't expose SVE to nested guests Marc Zyngier
2019-06-21  9:38 ` [PATCH 26/59] KVM: arm64: nv: Respect the virtual HCR_EL2.NV bit setting Marc Zyngier
2019-06-26  5:31   ` Julien Thierry
2019-07-03 16:31     ` Marc Zyngier
2019-06-21  9:38 ` [PATCH 27/59] KVM: arm64: nv: Respect virtual HCR_EL2.TVM and TRVM settings Marc Zyngier
2019-06-26  6:55   ` Julien Thierry
2019-07-04 14:57     ` Marc Zyngier
2019-06-21  9:38 ` [PATCH 28/59] KVM: arm64: nv: Respect the virtual HCR_EL2.NV1 bit setting Marc Zyngier
2019-06-26  7:23   ` Julien Thierry
2019-07-02 16:32   ` Alexandru Elisei
2019-07-03  9:10     ` Alexandru Elisei
2019-06-21  9:38 ` [PATCH 29/59] KVM: arm64: nv: Emulate EL12 register accesses from the virtual EL2 Marc Zyngier
2019-07-03  9:16   ` Alexandru Elisei
2019-06-21  9:38 ` [PATCH 30/59] KVM: arm64: nv: Configure HCR_EL2 for nested virtualization Marc Zyngier
2019-06-21  9:38 ` [PATCH 31/59] KVM: arm64: nv: Only toggle cache for virtual EL2 when SCTLR_EL2 changes Marc Zyngier
2019-06-21  9:38 ` [PATCH 32/59] KVM: arm64: nv: Hide RAS from nested guests Marc Zyngier
2019-07-03 13:59   ` Alexandru Elisei
2019-06-21  9:38 ` [PATCH 33/59] KVM: arm64: nv: Pretend we only support larger-than-host page sizes Marc Zyngier
2019-07-03 14:13   ` Alexandru Elisei
2019-06-21  9:38 ` [PATCH 34/59] KVM: arm/arm64: nv: Factor out stage 2 page table data from struct kvm Marc Zyngier
2019-07-03 15:52   ` Alexandru Elisei
2019-06-21  9:38 ` [PATCH 35/59] KVM: arm/arm64: nv: Support multiple nested stage 2 mmu structures Marc Zyngier
2019-06-25 12:19   ` Alexandru Elisei
2019-07-03 13:47     ` Marc Zyngier [this message]
2019-06-27 13:15   ` Julien Thierry
2019-07-04 15:51   ` Alexandru Elisei
2019-06-21  9:38 ` [PATCH 36/59] KVM: arm64: nv: Implement nested Stage-2 page table walk logic Marc Zyngier
2019-06-21  9:38 ` [PATCH 37/59] KVM: arm64: nv: Handle shadow stage 2 page faults Marc Zyngier
2019-07-05 14:28   ` Alexandru Elisei
2019-06-21  9:38 ` [PATCH 38/59] KVM: arm64: nv: Unmap/flush shadow stage 2 page tables Marc Zyngier
2019-07-01  8:03   ` Julien Thierry
2019-06-21  9:38 ` [PATCH 39/59] KVM: arm64: nv: Move last_vcpu_ran to be per s2 mmu Marc Zyngier
2019-07-01  9:10   ` Julien Thierry
2019-07-05 15:28   ` Alexandru Elisei
2019-06-21  9:38 ` [PATCH 40/59] KVM: arm64: nv: Don't always start an S2 MMU search from the beginning Marc Zyngier
2019-07-09  9:59   ` Alexandru Elisei
2019-06-21  9:38 ` [PATCH 41/59] KVM: arm64: nv: Introduce sys_reg_desc.forward_trap Marc Zyngier
2019-06-21  9:38 ` [PATCH 42/59] KVM: arm64: nv: Rework the system instruction emulation framework Marc Zyngier
2019-06-21  9:38 ` [PATCH 43/59] KVM: arm64: nv: Trap and emulate AT instructions from virtual EL2 Marc Zyngier
2019-07-01 15:45   ` Julien Thierry
2019-07-09 13:20   ` Alexandru Elisei
2019-07-18 12:13     ` Tomasz Nowicki
2019-07-18 12:36       ` Alexandru Elisei
2019-07-18 12:56         ` Alexandru Elisei
2019-07-18 12:59         ` Tomasz Nowicki
2019-07-24 10:25   ` Tomasz Nowicki
2019-07-24 12:39     ` Marc Zyngier
2019-07-24 13:56       ` Tomasz Nowicki
2019-06-21  9:38 ` [PATCH 44/59] KVM: arm64: nv: Trap and emulate TLBI " Marc Zyngier
2019-07-02 12:37   ` Julien Thierry
2019-07-10 10:15   ` Alexandru Elisei
2019-06-21  9:38 ` [PATCH 45/59] KVM: arm64: nv: Handle traps for timer _EL02 and _EL2 sysregs accessors Marc Zyngier
2019-06-21  9:38 ` [PATCH 46/59] KVM: arm64: nv: arch_timer: Support hyp timer emulation Marc Zyngier
2019-07-10 16:23   ` Alexandru Elisei
2019-06-21  9:38 ` [PATCH 47/59] KVM: arm64: nv: Propagate CNTVOFF_EL2 to the virtual EL1 timer Marc Zyngier
2019-08-08  9:34   ` Alexandru Elisei
2019-06-21  9:38 ` [PATCH 48/59] KVM: arm64: nv: Load timer before the GIC Marc Zyngier
2019-07-11 13:17   ` Alexandru Elisei
2019-06-21  9:38 ` [PATCH 49/59] KVM: arm64: nv: vgic-v3: Take cpu_if pointer directly instead of vcpu Marc Zyngier
2019-06-21  9:38 ` [PATCH 50/59] KVM: arm64: nv: Nested GICv3 Support Marc Zyngier
2019-07-16 11:41   ` Alexandru Elisei
2019-06-21  9:38 ` [PATCH 51/59] KVM: arm64: nv: vgic: Emulate the HW bit in software Marc Zyngier
2019-06-21  9:38 ` [PATCH 52/59] KVM: arm64: nv: vgic: Allow userland to set VGIC maintenance IRQ Marc Zyngier
2019-07-04  7:38   ` Julien Thierry
2019-07-04  9:01     ` Andre Przywara
2019-07-04  9:04       ` Julien Thierry
2019-06-21  9:38 ` [PATCH 53/59] KVM: arm64: nv: Implement maintenance interrupt forwarding Marc Zyngier
2019-07-04  8:06   ` Julien Thierry
2019-07-16 16:35   ` Alexandru Elisei
2019-06-21  9:38 ` [PATCH 54/59] KVM: arm64: nv: Add nested GICv3 tracepoints Marc Zyngier
2019-06-21  9:38 ` [PATCH 55/59] arm64: KVM: nv: Add handling of EL2-specific timer registers Marc Zyngier
2019-07-11 12:35   ` Alexandru Elisei
2019-07-17 10:19   ` Alexandru Elisei
2019-06-21  9:38 ` [PATCH 56/59] arm64: KVM: nv: Honor SCTLR_EL2.SPAN on entering vEL2 Marc Zyngier
2019-06-21  9:38 ` [PATCH 57/59] arm64: KVM: nv: Handle SCTLR_EL2 RES0/RES1 bits Marc Zyngier
2019-06-21  9:38 ` [PATCH 58/59] arm64: KVM: nv: Restrict S2 RD/WR permissions to match the guest's Marc Zyngier
2019-06-21  9:38 ` [PATCH 59/59] arm64: KVM: nv: Allow userspace to request KVM_ARM_VCPU_NESTED_VIRT Marc Zyngier
2019-06-21  9:57 ` [PATCH 00/59] KVM: arm64: ARMv8.3 Nested Virtualization support Itaru Kitayama
2019-06-21 11:21   ` Marc Zyngier
2019-08-02 10:11 ` Alexandru Elisei
2019-08-02 10:30   ` Andrew Jones
2019-08-09 10:01   ` Alexandru Elisei
2019-08-09 11:44     ` Andrew Jones
2019-08-09 12:00       ` Alexandru Elisei
2019-08-09 13:00         ` Andrew Jones
2019-08-22 11:57     ` Alexandru Elisei
2019-08-22 15:32       ` Alexandru Elisei

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