From: Christoffer Dall <christoffer.dall@linaro.org> To: Andrew Jones <drjones@redhat.com> Cc: kvm@vger.kernel.org, Ard Biesheuvel <ard.biesheuvel@linaro.org>, Marc Zyngier <marc.zyngier@arm.com>, Tomasz Nowicki <tn@semihalf.com>, kvmarm@lists.cs.columbia.edu, Julien Grall <julien.grall@arm.com>, Yury Norov <ynorov@caviumnetworks.com>, linux-arm-kernel@lists.infradead.org, Dave Martin <Dave.Martin@arm.com>, Shih-Wei Li <shihwei@cs.columbia.edu> Subject: Re: [PATCH v4 03/40] KVM: arm64: Avoid storing the vcpu pointer on the stack Date: Thu, 22 Feb 2018 10:10:34 +0100 [thread overview] Message-ID: <20180222091034.GD29376@cbox> (raw) In-Reply-To: <20180221173200.6vfv6a4hytibos3p@kamzik.brq.redhat.com> On Wed, Feb 21, 2018 at 06:32:00PM +0100, Andrew Jones wrote: > On Thu, Feb 15, 2018 at 10:02:55PM +0100, Christoffer Dall wrote: > > We already have the percpu area for the host cpu state, which points to > > the VCPU, so there's no need to store the VCPU pointer on the stack on > > every context switch. We can be a little more clever and just use > > tpidr_el2 for the percpu offset and load the VCPU pointer from the host > > context. > > > > This does require us to calculate the percpu offset without including > > the offset from the kernel mapping of the percpu array to the linear > > mapping of the array (which is what we store in tpidr_el1), because a > > PC-relative generated address in EL2 is already giving us the hyp alias > > of the linear mapping of a kernel address. We do this in > > __cpu_init_hyp_mode() by using kvm_ksym_ref(). > > > > This change also requires us to have a scratch register, so we take the > > chance to rearrange some of the el1_sync code to only look at the > > vttbr_el2 to determine if this is a trap from the guest or an HVC from > > the host. We do add an extra check to call the panic code if the kernel > > is configured with debugging enabled and we saw a trap from the host > > which wasn't an HVC, indicating that we left some EL2 trap configured by > > mistake. > > > > The code that accesses ESR_EL2 was previously using an alternative to > > use the _EL1 accessor on VHE systems, but this was actually unnecessary > > as the _EL1 accessor aliases the ESR_EL2 register on VHE, and the _EL2 > > accessor does the same thing on both systems. > > > > Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org> > > Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org> > > --- > > > > Notes: > > Changes since v3: > > - Reworked the assembly part of the patch after rebasing on v4.16-rc1 > > which created a conflict with the variant 2 mitigations. > > - Removed Marc's reviewed-by due to the rework. > > - Removed unneeded extern keyword in declaration in header file > > > > Changes since v1: > > - Use PC-relative addressing to access per-cpu variables instead of > > using a load from the literal pool. > > - Remove stale comments as pointed out by Marc > > - Reworded the commit message as suggested by Drew > > > > arch/arm64/include/asm/kvm_asm.h | 14 ++++++++++++++ > > arch/arm64/include/asm/kvm_host.h | 15 +++++++++++++++ > > arch/arm64/kernel/asm-offsets.c | 1 + > > arch/arm64/kvm/hyp/entry.S | 6 +----- > > arch/arm64/kvm/hyp/hyp-entry.S | 31 +++++++++++++------------------ > > arch/arm64/kvm/hyp/switch.c | 5 +---- > > arch/arm64/kvm/hyp/sysreg-sr.c | 5 +++++ > > 7 files changed, 50 insertions(+), 27 deletions(-) > > > > I'm not clear on the motivation for this patch. I assumed it enabled > simpler patches later in the series, but I did a bit of reading ahead > and didn't see anything obvious. I doubt it gives a speedup, so is it > just to avoid stack use? Making it easier to maintain these assembly > functions that span a couple files? If so, should it be posted separately > from this series? If not, could you please add some more text to the > commit message helping me better understand the full motivation? In the past we've had difficulties debugging things where we messed up the stack because we couldn't get back to the normal world with no reliable way to get the vcpu pointer. That was the rationale for storing the vcpu in a register as opposed to on the stack before. We only recently changed that so that we could use tpidr_el2 to access per-CPU variables. Given that the vcpu pointer can already be found via per-CPU variables, it makes sense to do that. In terms of performance, your argument can be applied in isolation to most patches in this series, and that was the initial approach I took in the optimization work, only optimizing things that appeared significant and would likely result in significant changes. The results were disappointing. It was only when I included every micro-optimization for the critical path that I could think of, that we were able to observe order of magnitude improvements for some workloads. Subsequent measurements confirmed this, it was hard to measure individual benefits from each patch, but overall the changes matter. > > Besides my confusion on motivation, it looks good to me > In that case, unless there's an argument that the code has become too hard to understand, ... > Reviewed-by: Andrew Jones <drjones@redhat.com> > ...then thanks! -Christoffer
WARNING: multiple messages have this Message-ID (diff)
From: christoffer.dall@linaro.org (Christoffer Dall) To: linux-arm-kernel@lists.infradead.org Subject: [PATCH v4 03/40] KVM: arm64: Avoid storing the vcpu pointer on the stack Date: Thu, 22 Feb 2018 10:10:34 +0100 [thread overview] Message-ID: <20180222091034.GD29376@cbox> (raw) In-Reply-To: <20180221173200.6vfv6a4hytibos3p@kamzik.brq.redhat.com> On Wed, Feb 21, 2018 at 06:32:00PM +0100, Andrew Jones wrote: > On Thu, Feb 15, 2018 at 10:02:55PM +0100, Christoffer Dall wrote: > > We already have the percpu area for the host cpu state, which points to > > the VCPU, so there's no need to store the VCPU pointer on the stack on > > every context switch. We can be a little more clever and just use > > tpidr_el2 for the percpu offset and load the VCPU pointer from the host > > context. > > > > This does require us to calculate the percpu offset without including > > the offset from the kernel mapping of the percpu array to the linear > > mapping of the array (which is what we store in tpidr_el1), because a > > PC-relative generated address in EL2 is already giving us the hyp alias > > of the linear mapping of a kernel address. We do this in > > __cpu_init_hyp_mode() by using kvm_ksym_ref(). > > > > This change also requires us to have a scratch register, so we take the > > chance to rearrange some of the el1_sync code to only look at the > > vttbr_el2 to determine if this is a trap from the guest or an HVC from > > the host. We do add an extra check to call the panic code if the kernel > > is configured with debugging enabled and we saw a trap from the host > > which wasn't an HVC, indicating that we left some EL2 trap configured by > > mistake. > > > > The code that accesses ESR_EL2 was previously using an alternative to > > use the _EL1 accessor on VHE systems, but this was actually unnecessary > > as the _EL1 accessor aliases the ESR_EL2 register on VHE, and the _EL2 > > accessor does the same thing on both systems. > > > > Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org> > > Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org> > > --- > > > > Notes: > > Changes since v3: > > - Reworked the assembly part of the patch after rebasing on v4.16-rc1 > > which created a conflict with the variant 2 mitigations. > > - Removed Marc's reviewed-by due to the rework. > > - Removed unneeded extern keyword in declaration in header file > > > > Changes since v1: > > - Use PC-relative addressing to access per-cpu variables instead of > > using a load from the literal pool. > > - Remove stale comments as pointed out by Marc > > - Reworded the commit message as suggested by Drew > > > > arch/arm64/include/asm/kvm_asm.h | 14 ++++++++++++++ > > arch/arm64/include/asm/kvm_host.h | 15 +++++++++++++++ > > arch/arm64/kernel/asm-offsets.c | 1 + > > arch/arm64/kvm/hyp/entry.S | 6 +----- > > arch/arm64/kvm/hyp/hyp-entry.S | 31 +++++++++++++------------------ > > arch/arm64/kvm/hyp/switch.c | 5 +---- > > arch/arm64/kvm/hyp/sysreg-sr.c | 5 +++++ > > 7 files changed, 50 insertions(+), 27 deletions(-) > > > > I'm not clear on the motivation for this patch. I assumed it enabled > simpler patches later in the series, but I did a bit of reading ahead > and didn't see anything obvious. I doubt it gives a speedup, so is it > just to avoid stack use? Making it easier to maintain these assembly > functions that span a couple files? If so, should it be posted separately > from this series? If not, could you please add some more text to the > commit message helping me better understand the full motivation? In the past we've had difficulties debugging things where we messed up the stack because we couldn't get back to the normal world with no reliable way to get the vcpu pointer. That was the rationale for storing the vcpu in a register as opposed to on the stack before. We only recently changed that so that we could use tpidr_el2 to access per-CPU variables. Given that the vcpu pointer can already be found via per-CPU variables, it makes sense to do that. In terms of performance, your argument can be applied in isolation to most patches in this series, and that was the initial approach I took in the optimization work, only optimizing things that appeared significant and would likely result in significant changes. The results were disappointing. It was only when I included every micro-optimization for the critical path that I could think of, that we were able to observe order of magnitude improvements for some workloads. Subsequent measurements confirmed this, it was hard to measure individual benefits from each patch, but overall the changes matter. > > Besides my confusion on motivation, it looks good to me > In that case, unless there's an argument that the code has become too hard to understand, ... > Reviewed-by: Andrew Jones <drjones@redhat.com> > ...then thanks! -Christoffer
next prev parent reply other threads:[~2018-02-22 9:10 UTC|newest] Thread overview: 276+ messages / expand[flat|nested] mbox.gz Atom feed top 2018-02-15 21:02 [PATCH v4 00/40] Optimize KVM/ARM for VHE systems Christoffer Dall 2018-02-15 21:02 ` Christoffer Dall 2018-02-15 21:02 ` [PATCH v4 01/40] KVM: arm/arm64: Avoid vcpu_load for other vcpu ioctls than KVM_RUN Christoffer Dall 2018-02-15 21:02 ` Christoffer Dall 2018-02-21 9:32 ` Marc Zyngier 2018-02-21 9:32 ` Marc Zyngier 2018-02-21 17:05 ` Andrew Jones 2018-02-21 17:05 ` Andrew Jones 2018-02-15 21:02 ` [PATCH v4 02/40] KVM: arm/arm64: Move vcpu_load call after kvm_vcpu_first_run_init Christoffer Dall 2018-02-15 21:02 ` Christoffer Dall 2018-02-21 11:05 ` Marc Zyngier 2018-02-21 11:05 ` Marc Zyngier 2018-02-15 21:02 ` [PATCH v4 03/40] KVM: arm64: Avoid storing the vcpu pointer on the stack Christoffer Dall 2018-02-15 21:02 ` Christoffer Dall 2018-02-19 15:50 ` Julien Grall 2018-02-19 15:50 ` Julien Grall 2018-02-22 8:43 ` Christoffer Dall 2018-02-22 8:43 ` Christoffer Dall 2018-02-21 11:34 ` Marc Zyngier 2018-02-21 11:34 ` Marc Zyngier 2018-02-22 9:02 ` Christoffer Dall 2018-02-22 9:02 ` Christoffer Dall 2018-02-22 9:35 ` Marc Zyngier 2018-02-22 9:35 ` Marc Zyngier 2018-02-22 9:49 ` Andrew Jones 2018-02-22 9:49 ` Andrew Jones 2018-02-21 17:32 ` Andrew Jones 2018-02-21 17:32 ` Andrew Jones 2018-02-22 9:10 ` Christoffer Dall [this message] 2018-02-22 9:10 ` Christoffer Dall 2018-02-22 9:56 ` Andrew Jones 2018-02-22 9:56 ` Andrew Jones 2018-02-22 10:24 ` Christoffer Dall 2018-02-22 10:24 ` Christoffer Dall 2018-02-15 21:02 ` [PATCH v4 04/40] KVM: arm64: Rework hyp_panic for VHE and non-VHE Christoffer Dall 2018-02-15 21:02 ` Christoffer Dall 2018-02-21 17:32 ` Andrew Jones 2018-02-21 17:32 ` Andrew Jones 2018-02-15 21:02 ` [PATCH v4 05/40] KVM: arm64: Move HCR_INT_OVERRIDE to default HCR_EL2 guest flag Christoffer Dall 2018-02-15 21:02 ` Christoffer Dall 2018-02-15 21:02 ` [PATCH v4 06/40] KVM: arm/arm64: Get rid of vcpu->arch.irq_lines Christoffer Dall 2018-02-15 21:02 ` Christoffer Dall 2018-02-15 21:02 ` [PATCH v4 07/40] KVM: arm/arm64: Add kvm_vcpu_load_sysregs and kvm_vcpu_put_sysregs Christoffer Dall 2018-02-15 21:02 ` Christoffer Dall 2018-02-15 21:03 ` [PATCH v4 08/40] KVM: arm/arm64: Introduce vcpu_el1_is_32bit Christoffer Dall 2018-02-15 21:03 ` Christoffer Dall 2018-02-21 12:05 ` Marc Zyngier 2018-02-21 12:05 ` Marc Zyngier 2018-02-22 9:11 ` Christoffer Dall 2018-02-22 9:11 ` Christoffer Dall 2018-02-21 17:34 ` Andrew Jones 2018-02-21 17:34 ` Andrew Jones 2018-02-15 21:03 ` [PATCH v4 09/40] KVM: arm64: Move debug dirty flag calculation out of world switch Christoffer Dall 2018-02-15 21:03 ` Christoffer Dall 2018-02-21 17:35 ` Andrew Jones 2018-02-21 17:35 ` Andrew Jones 2018-02-15 21:03 ` [PATCH v4 10/40] KVM: arm64: Slightly improve debug save/restore functions Christoffer Dall 2018-02-15 21:03 ` Christoffer Dall 2018-02-21 17:39 ` Andrew Jones 2018-02-21 17:39 ` Andrew Jones 2018-02-21 17:52 ` Marc Zyngier 2018-02-21 17:52 ` Marc Zyngier 2018-02-22 8:05 ` Andrew Jones 2018-02-22 8:05 ` Andrew Jones 2018-02-24 18:32 ` Christoffer Dall 2018-02-24 18:32 ` Christoffer Dall 2018-02-24 20:16 ` Marc Zyngier 2018-02-24 20:16 ` Marc Zyngier 2018-02-15 21:03 ` [PATCH v4 11/40] KVM: arm64: Improve debug register save/restore flow Christoffer Dall 2018-02-15 21:03 ` Christoffer Dall 2018-02-21 17:40 ` Andrew Jones 2018-02-21 17:40 ` Andrew Jones 2018-02-15 21:03 ` [PATCH v4 12/40] KVM: arm64: Factor out fault info population and gic workarounds Christoffer Dall 2018-02-15 21:03 ` Christoffer Dall 2018-02-21 17:41 ` Andrew Jones 2018-02-21 17:41 ` Andrew Jones 2018-02-15 21:03 ` [PATCH v4 13/40] KVM: arm64: Introduce VHE-specific kvm_vcpu_run Christoffer Dall 2018-02-15 21:03 ` Christoffer Dall 2018-02-21 17:43 ` Andrew Jones 2018-02-21 17:43 ` Andrew Jones 2018-02-21 18:18 ` Andrew Jones 2018-02-21 18:18 ` Andrew Jones 2018-02-22 9:16 ` Christoffer Dall 2018-02-22 9:16 ` Christoffer Dall 2018-02-15 21:03 ` [PATCH v4 14/40] KVM: arm64: Remove kern_hyp_va() use in VHE switch function Christoffer Dall 2018-02-15 21:03 ` Christoffer Dall 2018-02-15 21:03 ` [PATCH v4 15/40] KVM: arm64: Don't deactivate VM on VHE systems Christoffer Dall 2018-02-15 21:03 ` Christoffer Dall 2018-02-15 21:03 ` [PATCH v4 16/40] KVM: arm64: Remove noop calls to timer save/restore from VHE switch Christoffer Dall 2018-02-15 21:03 ` Christoffer Dall 2018-02-21 17:43 ` Andrew Jones 2018-02-21 17:43 ` Andrew Jones 2018-02-15 21:03 ` [PATCH v4 17/40] KVM: arm64: Move userspace system registers into separate function Christoffer Dall 2018-02-15 21:03 ` Christoffer Dall 2018-02-19 17:21 ` Julien Grall 2018-02-19 17:21 ` Julien Grall 2018-02-22 9:18 ` Christoffer Dall 2018-02-22 9:18 ` Christoffer Dall 2018-02-21 12:21 ` Marc Zyngier 2018-02-21 12:21 ` Marc Zyngier 2018-02-15 21:03 ` [PATCH v4 18/40] KVM: arm64: Rewrite sysreg alternatives to static keys Christoffer Dall 2018-02-15 21:03 ` Christoffer Dall 2018-02-21 17:44 ` Andrew Jones 2018-02-21 17:44 ` Andrew Jones 2018-02-15 21:03 ` [PATCH v4 19/40] KVM: arm64: Introduce separate VHE/non-VHE sysreg save/restore functions Christoffer Dall 2018-02-15 21:03 ` Christoffer Dall 2018-02-15 21:03 ` [PATCH v4 20/40] KVM: arm/arm64: Remove leftover comment from kvm_vcpu_run_vhe Christoffer Dall 2018-02-15 21:03 ` Christoffer Dall 2018-02-21 17:47 ` Andrew Jones 2018-02-21 17:47 ` Andrew Jones 2018-02-15 21:03 ` [PATCH v4 21/40] KVM: arm64: Unify non-VHE host/guest sysreg save and restore functions Christoffer Dall 2018-02-15 21:03 ` Christoffer Dall 2018-02-15 21:03 ` [PATCH v4 22/40] KVM: arm64: Don't save the host ELR_EL2 and SPSR_EL2 on VHE systems Christoffer Dall 2018-02-15 21:03 ` Christoffer Dall 2018-02-21 17:49 ` Andrew Jones 2018-02-21 17:49 ` Andrew Jones 2018-02-15 21:03 ` [PATCH v4 23/40] KVM: arm64: Change 32-bit handling of VM system registers Christoffer Dall 2018-02-15 21:03 ` Christoffer Dall 2018-02-15 21:03 ` [PATCH v4 24/40] KVM: arm64: Rewrite system register accessors to read/write functions Christoffer Dall 2018-02-15 21:03 ` Christoffer Dall 2018-02-19 18:12 ` Julien Grall 2018-02-19 18:12 ` Julien Grall 2018-02-22 9:18 ` Christoffer Dall 2018-02-22 9:18 ` Christoffer Dall 2018-02-21 13:32 ` Marc Zyngier 2018-02-21 13:32 ` Marc Zyngier 2018-02-22 9:22 ` Christoffer Dall 2018-02-22 9:22 ` Christoffer Dall 2018-02-22 10:48 ` Marc Zyngier 2018-02-22 10:48 ` Marc Zyngier 2018-02-22 11:10 ` Christoffer Dall 2018-02-22 11:10 ` Christoffer Dall 2018-02-22 13:26 ` Marc Zyngier 2018-02-22 13:26 ` Marc Zyngier 2018-02-22 13:34 ` Andrew Jones 2018-02-22 13:34 ` Andrew Jones 2018-02-22 14:35 ` Christoffer Dall 2018-02-22 14:35 ` Christoffer Dall 2018-02-22 15:11 ` Andrew Jones 2018-02-22 15:11 ` Andrew Jones 2018-02-22 15:58 ` Christoffer Dall 2018-02-22 15:58 ` Christoffer Dall 2018-02-15 21:03 ` [PATCH v4 25/40] KVM: arm64: Introduce framework for accessing deferred sysregs Christoffer Dall 2018-02-15 21:03 ` Christoffer Dall 2018-02-21 14:16 ` Marc Zyngier 2018-02-21 14:16 ` Marc Zyngier 2018-02-22 13:40 ` Andrew Jones 2018-02-22 13:40 ` Andrew Jones 2018-02-22 14:56 ` Christoffer Dall 2018-02-22 14:56 ` Christoffer Dall 2018-02-22 17:40 ` Julien Grall 2018-02-22 17:40 ` Julien Grall 2018-02-15 21:03 ` [PATCH v4 26/40] KVM: arm/arm64: Prepare to handle deferred save/restore of SPSR_EL1 Christoffer Dall 2018-02-15 21:03 ` Christoffer Dall 2018-02-21 14:47 ` Marc Zyngier 2018-02-21 14:47 ` Marc Zyngier 2018-02-22 9:25 ` Christoffer Dall 2018-02-22 9:25 ` Christoffer Dall 2018-02-22 13:49 ` Andrew Jones 2018-02-22 13:49 ` Andrew Jones 2018-02-15 21:03 ` [PATCH v4 27/40] KVM: arm64: Prepare to handle deferred save/restore of ELR_EL1 Christoffer Dall 2018-02-15 21:03 ` Christoffer Dall 2018-02-21 15:08 ` Marc Zyngier 2018-02-21 15:08 ` Marc Zyngier 2018-02-22 13:51 ` Andrew Jones 2018-02-22 13:51 ` Andrew Jones 2018-02-15 21:03 ` [PATCH v4 28/40] KVM: arm64: Defer saving/restoring 64-bit sysregs to vcpu load/put on VHE Christoffer Dall 2018-02-15 21:03 ` Christoffer Dall 2018-02-21 15:33 ` Marc Zyngier 2018-02-21 15:33 ` Marc Zyngier 2018-02-23 18:05 ` Christoffer Dall 2018-02-23 18:05 ` Christoffer Dall 2018-02-22 14:04 ` Andrew Jones 2018-02-22 14:04 ` Andrew Jones 2018-02-22 18:30 ` Julien Grall 2018-02-22 18:30 ` Julien Grall 2018-02-22 18:31 ` Julien Grall 2018-02-22 18:31 ` Julien Grall 2018-02-22 19:49 ` Christoffer Dall 2018-02-22 19:49 ` Christoffer Dall 2018-02-22 19:48 ` Christoffer Dall 2018-02-22 19:48 ` Christoffer Dall 2018-02-15 21:03 ` [PATCH v4 29/40] KVM: arm64: Prepare to handle deferred save/restore of 32-bit registers Christoffer Dall 2018-02-15 21:03 ` Christoffer Dall 2018-02-21 15:44 ` Marc Zyngier 2018-02-21 15:44 ` Marc Zyngier 2018-02-22 14:30 ` Andrew Jones 2018-02-22 14:30 ` Andrew Jones 2018-02-23 11:35 ` Julien Grall 2018-02-23 11:35 ` Julien Grall 2018-02-15 21:03 ` [PATCH v4 30/40] KVM: arm64: Defer saving/restoring 32-bit sysregs to vcpu load/put Christoffer Dall 2018-02-15 21:03 ` Christoffer Dall 2018-02-21 16:27 ` Marc Zyngier 2018-02-21 16:27 ` Marc Zyngier 2018-02-22 18:15 ` Christoffer Dall 2018-02-22 18:15 ` Christoffer Dall 2018-02-22 14:35 ` Andrew Jones 2018-02-22 14:35 ` Andrew Jones 2018-02-22 14:58 ` Christoffer Dall 2018-02-22 14:58 ` Christoffer Dall 2018-02-15 21:03 ` [PATCH v4 31/40] KVM: arm64: Move common VHE/non-VHE trap config in separate functions Christoffer Dall 2018-02-15 21:03 ` Christoffer Dall 2018-02-21 17:59 ` Marc Zyngier 2018-02-21 17:59 ` Marc Zyngier 2018-02-22 18:17 ` Christoffer Dall 2018-02-22 18:17 ` Christoffer Dall 2018-02-25 21:27 ` Christoffer Dall 2018-02-25 21:27 ` Christoffer Dall 2018-02-22 15:34 ` Andrew Jones 2018-02-22 15:34 ` Andrew Jones 2018-02-23 14:30 ` Julien Grall 2018-02-23 14:30 ` Julien Grall 2018-02-23 17:48 ` Christoffer Dall 2018-02-23 17:48 ` Christoffer Dall 2018-02-25 21:29 ` Christoffer Dall 2018-02-25 21:29 ` Christoffer Dall 2018-02-15 21:03 ` [PATCH v4 32/40] KVM: arm64: Directly call VHE and non-VHE FPSIMD enabled functions Christoffer Dall 2018-02-15 21:03 ` Christoffer Dall 2018-02-21 18:11 ` Marc Zyngier 2018-02-21 18:11 ` Marc Zyngier 2018-02-22 15:38 ` Andrew Jones 2018-02-22 15:38 ` Andrew Jones 2018-02-15 21:03 ` [PATCH v4 33/40] KVM: arm64: Configure c15, PMU, and debug register traps on cpu load/put for VHE Christoffer Dall 2018-02-15 21:03 ` Christoffer Dall 2018-02-21 18:20 ` Marc Zyngier 2018-02-21 18:20 ` Marc Zyngier 2018-02-22 18:57 ` Christoffer Dall 2018-02-22 18:57 ` Christoffer Dall 2018-02-22 15:51 ` Andrew Jones 2018-02-22 15:51 ` Andrew Jones 2018-02-15 21:03 ` [PATCH v4 34/40] KVM: arm64: Cleanup __activate_traps and __deactive_traps for VHE and non-VHE Christoffer Dall 2018-02-15 21:03 ` Christoffer Dall 2018-02-21 18:26 ` Marc Zyngier 2018-02-21 18:26 ` Marc Zyngier 2018-02-22 19:04 ` Christoffer Dall 2018-02-22 19:04 ` Christoffer Dall 2018-02-22 15:54 ` Andrew Jones 2018-02-22 15:54 ` Andrew Jones 2018-02-15 21:03 ` [PATCH v4 35/40] KVM: arm/arm64: Get rid of vgic_elrsr Christoffer Dall 2018-02-15 21:03 ` Christoffer Dall 2018-02-22 9:45 ` Marc Zyngier 2018-02-22 9:45 ` Marc Zyngier 2018-02-23 14:44 ` Julien Grall 2018-02-23 14:44 ` Julien Grall 2018-02-23 17:50 ` Christoffer Dall 2018-02-23 17:50 ` Christoffer Dall 2018-02-15 21:03 ` [PATCH v4 36/40] KVM: arm/arm64: Handle VGICv2 save/restore from the main VGIC code Christoffer Dall 2018-02-15 21:03 ` Christoffer Dall 2018-02-15 21:03 ` [PATCH v4 37/40] KVM: arm/arm64: Move arm64-only vgic-v2-sr.c file to arm64 Christoffer Dall 2018-02-15 21:03 ` Christoffer Dall 2018-02-22 12:33 ` Marc Zyngier 2018-02-22 12:33 ` Marc Zyngier 2018-02-22 14:37 ` Christoffer Dall 2018-02-22 14:37 ` Christoffer Dall 2018-02-15 21:03 ` [PATCH v4 38/40] KVM: arm/arm64: Handle VGICv3 save/restore from the main VGIC code on VHE Christoffer Dall 2018-02-15 21:03 ` Christoffer Dall 2018-02-22 12:32 ` Marc Zyngier 2018-02-22 12:32 ` Marc Zyngier 2018-02-22 14:42 ` Christoffer Dall 2018-02-22 14:42 ` Christoffer Dall 2018-02-22 15:01 ` Marc Zyngier 2018-02-22 15:01 ` Marc Zyngier 2018-02-22 16:02 ` Christoffer Dall 2018-02-22 16:02 ` Christoffer Dall 2018-02-22 17:21 ` Marc Zyngier 2018-02-22 17:21 ` Marc Zyngier 2018-02-22 19:28 ` Christoffer Dall 2018-02-22 19:28 ` Christoffer Dall 2018-02-15 21:03 ` [PATCH v4 39/40] KVM: arm/arm64: Move VGIC APR save/restore to vgic put/load Christoffer Dall 2018-02-15 21:03 ` Christoffer Dall 2018-02-22 13:11 ` Marc Zyngier 2018-02-22 13:11 ` Marc Zyngier 2018-02-22 14:44 ` Christoffer Dall 2018-02-22 14:44 ` Christoffer Dall 2018-02-15 21:03 ` [PATCH v4 40/40] KVM: arm/arm64: Avoid VGICv3 save/restore on VHE with no IRQs Christoffer Dall 2018-02-15 21:03 ` Christoffer Dall
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