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linux-next/drivers/kvm
Avi Kivity bccf2150fe KVM: Per-vcpu inodes
Allocate a distinct inode for every vcpu in a VM.  This has the following
benefits:

 - the filp cachelines are no longer bounced when f_count is incremented on
   every ioctl()
 - the API and internal code are distinctly clearer; for example, on the
   KVM_GET_REGS ioctl, there is no need to copy the vcpu number from
   userspace and then copy the registers back; the vcpu identity is derived
   from the fd used to make the call

Right now the performance benefits are completely theoretical since (a) we
don't support more than one vcpu per VM and (b) virtualization hardware
inefficiencies completely everwhelm any cacheline bouncing effects.  But
both of these will change, and we need to prepare the API today.

Signed-off-by: Avi Kivity <avi@qumranet.com>
2007-03-04 11:12:42 +02:00
..
Kconfig [PATCH] KVM: Put KVM in a new Virtualization menu 2006-12-13 09:05:46 -08:00
kvm_main.c KVM: Per-vcpu inodes 2007-03-04 11:12:42 +02:00
kvm_svm.h KVM: Use ARRAY_SIZE macro instead of manual calculation. 2007-03-04 11:12:39 +02:00
kvm_vmx.h [PATCH] KVM: Replace __x86_64__ with CONFIG_X86_64 2006-12-13 09:05:46 -08:00
kvm.h KVM: Per-vcpu inodes 2007-03-04 11:12:42 +02:00
Makefile [PATCH] kvm: userspace interface 2006-12-10 09:57:22 -08:00
mmu.c KVM: Use page_private()/set_page_private() apis 2007-03-04 11:12:39 +02:00
paging_tmpl.h KVM: Cosmetics 2007-03-04 11:12:39 +02:00
segment_descriptor.h [PATCH] kvm: userspace interface 2006-12-10 09:57:22 -08:00
svm.c KVM: Per-vcpu inodes 2007-03-04 11:12:42 +02:00
svm.h [PATCH] kvm: userspace interface 2006-12-10 09:57:22 -08:00
vmx.c KVM: Per-vcpu inodes 2007-03-04 11:12:42 +02:00
vmx.h [PATCH] kvm: vmx: handle triple faults by returning EXIT_REASON_SHUTDOWN to userspace 2007-02-12 09:48:40 -08:00
x86_emulate.c [PATCH] KVM: x86 emulator: fix bit string instructions 2007-01-23 07:52:06 -08:00
x86_emulate.h [PATCH] KVM: Replace __x86_64__ with CONFIG_X86_64 2006-12-13 09:05:46 -08:00