Re: [PATCH V7 10/10] arm/arm64: KVM: add guest SEA support

Hello Marc, On 1/16/2017 4:58 AM, Marc Zyngier wrote: Hi Tyler, On 12/01/17 18:15, Tyler Baicar wrote: Currently external aborts are unsupported by the guest abort handling. Add handling for SEAs so that the host kernel reports SEAs which occur in the guest kernel. Signed-off-by: Tyler

Re: [PATCH V7 04/10] arm64: exception: handle Synchronous External Abort

Hello Will, On 1/16/2017 4:53 AM, Will Deacon wrote: On Thu, Jan 12, 2017 at 11:15:18AM -0700, Tyler Baicar wrote: SEA exceptions are often caused by an uncorrected hardware error, and are handled when data abort and instruction abort exception classes have specific values for their Fault

Re: [PATCH v3 2/5] arm64: Work around Falkor erratum 1003

Hi Mark, On 01/11/2017 01:45 PM, Mark Rutland wrote: > On Wed, Jan 11, 2017 at 12:40:42PM -0600, Timur Tabi wrote: >> On 01/11/2017 12:37 PM, Mark Rutland wrote: >>> The name, as it is, is perfectly descriptive. >>> >>> Let's not sacrifice legibility over a non-issue. >> >> I don't want to kick a

Re: [PATCH 2/3] KVM: arm64: Access CNTHCTL_EL2 bit fields correctly on VHE systems

On 16/01/17 14:11, Marc Zyngier wrote: On 16/01/17 13:30, Marc Zyngier wrote: On 13/01/17 14:56, Suzuki K Poulose wrote: On 13/01/17 13:30, Marc Zyngier wrote: [+ Suzuki, who wrote the whole cpus_have_const_cap thing] [...] But maybe we should have have some stronger guarantees that

Re: [PATCH 2/3] KVM: arm64: Access CNTHCTL_EL2 bit fields correctly on VHE systems

On 16/01/17 13:30, Marc Zyngier wrote: > On 13/01/17 14:56, Suzuki K Poulose wrote: >> On 13/01/17 13:30, Marc Zyngier wrote: >>> [+ Suzuki, who wrote the whole cpus_have_const_cap thing] >>> > > [...] > >>> But maybe we should have have some stronger guarantees that we'll >>> always get things

Re: [PATCH 2/3] KVM: arm64: Access CNTHCTL_EL2 bit fields correctly on VHE systems

On 13/01/17 14:56, Suzuki K Poulose wrote: > On 13/01/17 13:30, Marc Zyngier wrote: >> [+ Suzuki, who wrote the whole cpus_have_const_cap thing] >> [...] >> But maybe we should have have some stronger guarantees that we'll >> always get things inlined, and that the "const" side is enforced: > >

Re: [PATCH V7 10/10] arm/arm64: KVM: add guest SEA support

Hi Tyler, On 12/01/17 18:15, Tyler Baicar wrote: > Currently external aborts are unsupported by the guest abort > handling. Add handling for SEAs so that the host kernel reports > SEAs which occur in the guest kernel. > > Signed-off-by: Tyler Baicar > --- >

Re: [PATCH V7 04/10] arm64: exception: handle Synchronous External Abort

On Thu, Jan 12, 2017 at 11:15:18AM -0700, Tyler Baicar wrote: > SEA exceptions are often caused by an uncorrected hardware > error, and are handled when data abort and instruction abort > exception classes have specific values for their Fault Status > Code. > When SEA occurs, before killing the

Re: [Qemu-devel] [PATCH RFC 0/6] target-arm: KVM64: Cross type vCPU support

Hi, Your series seems to have some coding style problems. See output below for more information: Type: series Message-id: 1484558821-15512-1-git-send-email-zhaoshengl...@huawei.com Subject: [Qemu-devel] [PATCH RFC 0/6] target-arm: KVM64: Cross type vCPU support === TEST SCRIPT BEGIN ===

[PATCH RFC 0/7] ARM64: KVM: Cross type vCPU support

From: Shannon Zhao This patch set adds support for Cross type vCPU in KVM-ARM64. It allows userspace to request a different vCPU type with the physical ones and check whether the physical CPUs could support that specific vCPU. If so, KVM will trap the ID registers and

[PATCH RFC 3/7] ARM64: KVM: Reset ID registers when creating the VCPUs

From: Shannon Zhao Reset ID registers when creating the VCPUs and store the values per VCPU. Also modify the get_invariant_sys_reg and set_invariant_sys_reg to get/set the ID register from vcpu context. Signed-off-by: Shannon Zhao ---

[PATCH RFC 6/7] ARM64: KVM: Support heterogeneous system

From: Shannon Zhao When initializing KVM, check whether physical hardware is a heterogeneous system through the MIDR values. If so, force userspace to set the KVM_ARM_VCPU_CROSS feature bit. Otherwise, it should fail to initialize VCPUs. Signed-off-by: Shannon Zhao

[PATCH RFC 1/7] ARM64: KVM: Add the definition of ID registers

From: Shannon Zhao Add a new memeber in kvm_cpu_context to save the ID registers value. Signed-off-by: Shannon Zhao --- arch/arm64/include/asm/kvm_host.h | 46 +++ 1 file changed, 46 insertions(+) diff

[PATCH RFC 5/7] ARM64: KVM: Support cross type vCPU

From: Shannon Zhao Add a capability to tell userspace that KVM supports cross type vCPU. Add a cpu feature for userspace to set when it doesn't use host type vCPU and kvm_vcpu_preferred_target return the host MIDR register value so that userspace can check whether its

[PATCH RFC 7/7] ARM64: KVM: Add user set handler for id_aa64mmfr0_el1

From: Shannon Zhao Check if the configuration is fine. Signed-off-by: Shannon Zhao --- arch/arm64/kvm/sys_regs.c | 32 +++- 1 file changed, 31 insertions(+), 1 deletion(-) diff --git a/arch/arm64/kvm/sys_regs.c

[PATCH RFC 2/7] ARM64: KVM: Add reset handlers for all ID registers

From: Shannon Zhao Move invariant_sys_regs before emulate_sys_reg so that it can be used later. Signed-off-by: Shannon Zhao --- arch/arm64/kvm/sys_regs.c | 193 -- 1 file changed, 116 insertions(+),

[PATCH RFC 4/7] ARM64: KVM: emulate accessing ID registers

From: Shannon Zhao Signed-off-by: Shannon Zhao --- arch/arm64/kvm/sys_regs.c | 83 --- 1 file changed, 50 insertions(+), 33 deletions(-) diff --git a/arch/arm64/kvm/sys_regs.c

[PATCH RFC 3/6] arm: kvm64: Check if kvm supports cross type vCPU

From: Shannon Zhao If user requests a specific type vCPU which is not same with the physical ones and if kvm supports cross type vCPU, we set the KVM_ARM_VCPU_CROSS bit and set the CPU ID registers. Signed-off-by: Shannon Zhao ---

[PATCH RFC 5/6] arm: virt: Enable generic type CPU in virt machine

From: Shannon Zhao Signed-off-by: Shannon Zhao --- hw/arm/virt.c | 1 + 1 file changed, 1 insertion(+) diff --git a/hw/arm/virt.c b/hw/arm/virt.c index 4b301c2..49b7b65 100644 --- a/hw/arm/virt.c +++ b/hw/arm/virt.c @@ -166,6 +166,7 @@ static

[PATCH RFC 0/6] target-arm: KVM64: Cross type vCPU support

From: Shannon Zhao This patch set support use cross type vCPU when using KVM on ARM and add two new CPU types: generic and cortex-a72. You can test this patch set with QEMU using -cpu cortex-a53/cortex-a57/generic/cortex-a72 These patches can be fetched from:

[PATCH RFC 2/6] target: arm: Add the qemu target for KVM_ARM_TARGET_GENERIC_V8

From: Shannon Zhao Signed-off-by: Shannon Zhao --- target/arm/kvm-consts.h | 2 ++ 1 file changed, 2 insertions(+) diff --git a/target/arm/kvm-consts.h b/target/arm/kvm-consts.h index a2c9518..fc01ac5 100644 --- a/target/arm/kvm-consts.h +++

[PATCH RFC 6/6] target-arm: cpu64: Add support for Cortex-A72

From: Shannon Zhao Add the ARM Cortex-A72 processor definition. It's similar to A57. Signed-off-by: Shannon Zhao --- hw/arm/virt.c | 1 + target/arm/cpu64.c | 56 ++ 2 files changed, 57

[PATCH RFC 1/6] headers: update linux headers

From: Shannon Zhao Signed-off-by: Shannon Zhao --- linux-headers/asm-arm64/kvm.h | 1 + linux-headers/linux/kvm.h | 2 ++ 2 files changed, 3 insertions(+) diff --git a/linux-headers/asm-arm64/kvm.h b/linux-headers/asm-arm64/kvm.h index

[PATCH RFC 4/6] target: arm: Add a generic type cpu

From: Shannon Zhao Add a generic type cpu, it's useful for migration when running on different hardwares. Signed-off-by: Shannon Zhao --- target/arm/cpu64.c | 54 ++ 1 file changed, 54