similar to: [PATCH v2 0/6] KVM: arm64: VCPU preempted check support

Displaying 20 results from an estimated 500 matches similar to: "[PATCH v2 0/6] KVM: arm64: VCPU preempted check support"

2019 Dec 17
10
[PATCH 0/5] KVM: arm64: vcpu preempted check support
From: Zengruan Ye <yezengruan at huawei.com> This patch set aims to support the vcpu_is_preempted() functionality under KVM/arm64, which allowing the guest to obtain the vcpu is currently running or not. This will enhance lock performance on overcommitted hosts (more runnable vcpus than physical cpus in the system) as doing busy waits for preempted vcpus will hurt system performance far
2019 Dec 17
10
[PATCH 0/5] KVM: arm64: vcpu preempted check support
From: Zengruan Ye <yezengruan at huawei.com> This patch set aims to support the vcpu_is_preempted() functionality under KVM/arm64, which allowing the guest to obtain the vcpu is currently running or not. This will enhance lock performance on overcommitted hosts (more runnable vcpus than physical cpus in the system) as doing busy waits for preempted vcpus will hurt system performance far
2019 Dec 26
0
[PATCH 3/5] KVM: arm64: Support pvlock preempted via shared structure
Hi Steve, On 2019/12/17 22:33, Steven Price wrote: > On Tue, Dec 17, 2019 at 01:55:47PM +0000, yezengruan at huawei.com wrote: >> From: Zengruan Ye <yezengruan at huawei.com> >> >> Implement the service call for configuring a shared structure between a >> vcpu and the hypervisor in which the hypervisor can tell the vcpu is >> running or not. >>
2019 Dec 26
0
[PATCH 5/5] KVM: arm64: Support the vcpu preemption check
Hi Steve, On 2019/12/17 22:40, Steven Price wrote: > On Tue, Dec 17, 2019 at 01:55:49PM +0000, yezengruan at huawei.com wrote: >> From: Zengruan Ye <yezengruan at huawei.com> >> >> Support the vcpu_is_preempted() functionality under KVM/arm64. This will >> enhance lock performance on overcommitted hosts (more runnable vcpus >> than physical cpus in the
2019 Dec 19
0
[PATCH 2/5] KVM: arm64: Implement PV_LOCK_FEATURES call
Hi Steve, On 2019/12/17 22:28, Steven Price wrote: > On Tue, Dec 17, 2019 at 01:55:46PM +0000, yezengruan at huawei.com wrote: >> From: Zengruan Ye <yezengruan at huawei.com> >> >> This provides a mechanism for querying which paravirtualized lock >> features are available in this hypervisor. >> >> Also add the header file which defines the ABI for the
2019 Dec 17
0
[PATCH 2/5] KVM: arm64: Implement PV_LOCK_FEATURES call
From: Zengruan Ye <yezengruan at huawei.com> This provides a mechanism for querying which paravirtualized lock features are available in this hypervisor. Also add the header file which defines the ABI for the paravirtualized lock features we're about to add. Signed-off-by: Zengruan Ye <yezengruan at huawei.com> --- arch/arm64/include/asm/pvlock-abi.h | 16 ++++++++++++++++
2019 Dec 19
0
[PATCH 1/5] KVM: arm64: Document PV-lock interface
Hi Steve, On 2019/12/17 22:21, Steven Price wrote: > On Tue, Dec 17, 2019 at 01:55:45PM +0000, yezengruan at huawei.com wrote: >> From: Zengruan Ye <yezengruan at huawei.com> >> >> Introduce a paravirtualization interface for KVM/arm64 to obtain the vcpu >> is currently running or not. >> >> A hypercall interface is provided for the guest to
2019 Dec 26
1
[PATCH v2 5/6] KVM: arm64: Add interface to support VCPU preempted check
Hi Zengruan, Thank you for the patch! Yet something to improve: [auto build test ERROR on kvmarm/next] [also build test ERROR on kvm/linux-next linus/master v5.5-rc3 next-20191220] [cannot apply to arm64/for-next/core] [if your patch is applied to the wrong git tree, please drop us a note to help improve the system. BTW, we also suggest to use '--base' option to specify the base tree in
2019 Dec 26
0
[PATCH v2 5/6] KVM: arm64: Add interface to support VCPU preempted check
This is to fix some lock holder preemption issues. Some other locks implementation do a spin loop before acquiring the lock itself. Currently kernel has an interface of bool vcpu_is_preempted(int cpu). It takes the CPU as parameter and return true if the CPU is preempted. Then kernel can break the spin loops upon the retval of vcpu_is_preempted. As kernel has used this interface, So lets support
2016 Oct 19
3
[PATCH v4 5/5] x86, kvm: support vcpu preempted check
2016-10-19 06:20-0400, Pan Xinhui: > This is to fix some lock holder preemption issues. Some other locks > implementation do a spin loop before acquiring the lock itself. > Currently kernel has an interface of bool vcpu_is_preempted(int cpu). It > takes the cpu as parameter and return true if the cpu is preempted. Then > kernel can break the spin loops upon on the retval of
2016 Oct 19
3
[PATCH v4 5/5] x86, kvm: support vcpu preempted check
2016-10-19 06:20-0400, Pan Xinhui: > This is to fix some lock holder preemption issues. Some other locks > implementation do a spin loop before acquiring the lock itself. > Currently kernel has an interface of bool vcpu_is_preempted(int cpu). It > takes the cpu as parameter and return true if the cpu is preempted. Then > kernel can break the spin loops upon on the retval of
2016 Oct 20
15
[PATCH v5 0/9] implement vcpu preempted check
change from v4: spilt x86 kvm vcpu preempted check into two patches. add documentation patch. add x86 vcpu preempted check patch under xen add s390 vcpu preempted check patch change from v3: add x86 vcpu preempted check patch change from v2: no code change, fix typos, update some comments change from v1: a simplier definition of default vcpu_is_preempted skip mahcine type check on ppc,
2016 Oct 20
15
[PATCH v5 0/9] implement vcpu preempted check
change from v4: spilt x86 kvm vcpu preempted check into two patches. add documentation patch. add x86 vcpu preempted check patch under xen add s390 vcpu preempted check patch change from v3: add x86 vcpu preempted check patch change from v2: no code change, fix typos, update some comments change from v1: a simplier definition of default vcpu_is_preempted skip mahcine type check on ppc,
2016 Nov 02
13
[PATCH v7 00/11] implement vcpu preempted check
change from v6: fix typos and remove uncessary comments. change from v5: spilt x86/kvm patch into guest/host part. introduce kvm_write_guest_offset_cached. fix some typos. rebase patch onto 4.9.2 change from v4: spilt x86 kvm vcpu preempted check into two patches. add documentation patch. add x86 vcpu preempted check patch under xen add s390 vcpu preempted check patch change from v3:
2016 Nov 02
13
[PATCH v7 00/11] implement vcpu preempted check
change from v6: fix typos and remove uncessary comments. change from v5: spilt x86/kvm patch into guest/host part. introduce kvm_write_guest_offset_cached. fix some typos. rebase patch onto 4.9.2 change from v4: spilt x86 kvm vcpu preempted check into two patches. add documentation patch. add x86 vcpu preempted check patch under xen add s390 vcpu preempted check patch change from v3:
2016 Oct 19
10
[PATCH v4 0/5] implement vcpu preempted check
change from v3: add x86 vcpu preempted check patch change from v2: no code change, fix typos, update some comments change from v1: a simplier definition of default vcpu_is_preempted skip mahcine type check on ppc, and add config. remove dedicated macro. add one patch to drop overload of rwsem_spin_on_owner and mutex_spin_on_owner. add more comments thanks boqun and Peter's suggestion.
2016 Oct 19
10
[PATCH v4 0/5] implement vcpu preempted check
change from v3: add x86 vcpu preempted check patch change from v2: no code change, fix typos, update some comments change from v1: a simplier definition of default vcpu_is_preempted skip mahcine type check on ppc, and add config. remove dedicated macro. add one patch to drop overload of rwsem_spin_on_owner and mutex_spin_on_owner. add more comments thanks boqun and Peter's suggestion.
2016 Oct 28
16
[PATCH v6 00/11] implement vcpu preempted check
change from v5: spilt x86/kvm patch into guest/host part. introduce kvm_write_guest_offset_cached. fix some typos. rebase patch onto 4.9.2 change from v4: spilt x86 kvm vcpu preempted check into two patches. add documentation patch. add x86 vcpu preempted check patch under xen add s390 vcpu preempted check patch change from v3: add x86 vcpu preempted check patch change from v2: no code
2016 Oct 28
16
[PATCH v6 00/11] implement vcpu preempted check
change from v5: spilt x86/kvm patch into guest/host part. introduce kvm_write_guest_offset_cached. fix some typos. rebase patch onto 4.9.2 change from v4: spilt x86 kvm vcpu preempted check into two patches. add documentation patch. add x86 vcpu preempted check patch under xen add s390 vcpu preempted check patch change from v3: add x86 vcpu preempted check patch change from v2: no code
2019 Dec 23
0
[PATCH 1/5] KVM: arm64: Document PV-lock interface
Hi Markus, On 2019/12/20 22:32, Markus Elfring wrote: > ? >> +++ b/Documentation/virt/kvm/arm/pvlock.rst > ? >> +Paravirtualized lock support for arm64 >> +====================================== >> + >> +KVM/arm64 provids some ? > ? > > I suggest to avoid a typo here. Thanks for posting this. > > Regards, > Markus > Thanks, Zengruan