- 16 1月, 2015 1 次提交
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由 Mario Smarduch 提交于
This patch enables ARMv8 ditry page logging support. Plugs ARMv8 into generic layer through Kconfig symbol, and drops earlier ARM64 constraints to enable logging at architecture layer. Reviewed-by: NChristoffer Dall <christoffer.dall@linaro.org> Signed-off-by: NMario Smarduch <m.smarduch@samsung.com>
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- 07 1月, 2015 1 次提交
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由 Pranith Kumar 提交于
SRCU is not necessary to be compiled by default in all cases. For tinification efforts not compiling SRCU unless necessary is desirable. The current patch tries to make compiling SRCU optional by introducing a new Kconfig option CONFIG_SRCU which is selected when any of the components making use of SRCU are selected. If we do not select CONFIG_SRCU, srcu.o will not be compiled at all. text data bss dec hex filename 2007 0 0 2007 7d7 kernel/rcu/srcu.o Size of arch/powerpc/boot/zImage changes from text data bss dec hex filename 831552 64180 23944 919676 e087c arch/powerpc/boot/zImage : before 829504 64180 23952 917636 e0084 arch/powerpc/boot/zImage : after so the savings are about ~2000 bytes. Signed-off-by: NPranith Kumar <bobby.prani@gmail.com> CC: Paul E. McKenney <paulmck@linux.vnet.ibm.com> CC: Josh Triplett <josh@joshtriplett.org> CC: Lai Jiangshan <laijs@cn.fujitsu.com> Signed-off-by: NPaul E. McKenney <paulmck@linux.vnet.ibm.com> [ paulmck: resolve conflict due to removal of arch/ia64/kvm/Kconfig. ]
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- 28 12月, 2013 1 次提交
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由 Anup Patel 提交于
Current max VCPUs per-Guest is set to 4 which is preventing us from creating a Guest (or VM) with 8 VCPUs on Host (e.g. X-Gene Storm SOC) with 8 Host CPUs. The correct value of max VCPUs per-Guest should be same as the max CPUs supported by GICv2 which is 8 but, increasing value of max VCPUs per-Guest can make things slower hence we add Kconfig option to let KVM users select appropriate max VCPUs per-Guest. Signed-off-by: NAnup Patel <anup.patel@linaro.org> Signed-off-by: NPranavkumar Sawargaonkar <pranavkumar@linaro.org> Signed-off-by: NMarc Zyngier <marc.zyngier@arm.com>
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- 30 10月, 2013 1 次提交
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由 Marc Zyngier 提交于
On an (even slightly) oversubscribed system, spinlocks are quickly becoming a bottleneck, as some vcpus are spinning, waiting for a lock to be released, while the vcpu holding the lock may not be running at all. The solution is to trap blocking WFEs and tell KVM that we're now spinning. This ensures that other vpus will get a scheduling boost, allowing the lock to be released more quickly. Also, using CONFIG_HAVE_KVM_CPU_RELAX_INTERCEPT slightly improves the performance when the VM is severely overcommited. Acked-by: NChristoffer Dall <christoffer.dall@linaro.org> Signed-off-by: NMarc Zyngier <marc.zyngier@arm.com>
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- 04 7月, 2013 1 次提交
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由 Marc Zyngier 提交于
Finally plug KVM/arm64 into the config system, making it possible to enable KVM support on AArch64 CPUs. Signed-off-by: NMarc Zyngier <marc.zyngier@arm.com> Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>
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