Messages in this thread | | | Date | Fri, 11 Jul 2014 14:23:52 +0800 | From | Tang Chen <> | Subject | Re: [PATCH v2 0/5] kvm, mem-hotplug: Do not pin ept identity pagetable and apic access page. |
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hi Gleb, Marcelo, Nadav,
Would you please help to review these patches ?
Thanks. :)
On 07/08/2014 09:01 PM, Tang Chen wrote: > ept identity pagetable and apic access page in kvm are pinned in memory. > As a result, they cannot be migrated/hot-removed. > > But actually they don't need to be pinned in memory. > > [For ept identity page] > Just do not pin it. When it is migrated, guest will be able to find the > new page in the next ept violation. > > [For apic access page] > The hpa of apic access page is stored in VMCS APIC_ACCESS_ADDR pointer. > When apic access page is migrated, we update VMCS APIC_ACCESS_ADDR pointer > for each vcpu in addition. > > Change log v1 -> v2: > 1. Add [PATCH 4/5] to remove unnecessary kvm_arch->ept_identity_pagetable. > 2. In [PATCH 3/5], only introduce KVM_REQ_APIC_PAGE_RELOAD request. > 3. In [PATCH 3/5], add set_apic_access_page_addr() for svm. > > > Tang Chen (5): > kvm: Add gfn_to_page_no_pin() to translate gfn to page without > pinning. > kvm: Use APIC_DEFAULT_PHYS_BASE macro as the apic access page address. > kvm, mem-hotplug: Do not pin ept identity pagetable in memory. > kvm: Remove ept_identity_pagetable from struct kvm_arch. > kvm, mem-hotplug: Do not pin apic access page in memory. > > arch/x86/include/asm/kvm_host.h | 2 +- > arch/x86/kvm/mmu.c | 11 +++++++++++ > arch/x86/kvm/svm.c | 9 ++++++++- > arch/x86/kvm/vmx.c | 40 ++++++++++++++++++++++------------------ > arch/x86/kvm/x86.c | 16 ++++++++++++++-- > include/linux/kvm_host.h | 3 +++ > virt/kvm/kvm_main.c | 29 ++++++++++++++++++++++++++++- > 7 files changed, 87 insertions(+), 23 deletions(-) >
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