linux_dsm_epyc7002/Documentation/virtual/kvm
Christian Borntraeger b9e5dc8d45 KVM: provide synchronous registers in kvm_run
On some cpus the overhead for virtualization instructions is in the same
range as a system call. Having to call multiple ioctls to get set registers
will make certain userspace handled exits more expensive than necessary.
Lets provide a section in kvm_run that works as a shared save area
for guest registers.
We also provide two 64bit flags fields (architecture specific), that will
specify
1. which parts of these fields are valid.
2. which registers were modified by userspace

Each bit for these flag fields will define a group of registers (like
general purpose) or a single register.

Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
2012-03-05 14:52:22 +02:00
..
api.txt KVM: provide synchronous registers in kvm_run 2012-03-05 14:52:22 +02:00
cpuid.txt
locking.txt
mmu.txt KVM: MMU: Adjust shadow paging to work when SMEP=1 and CR0.WP=0 2011-07-12 13:16:26 +03:00
msr.txt KVM: KVM Steal time guest/host interface 2011-07-12 13:17:03 +03:00
nested-vmx.txt KVM: nVMX: Documentation 2011-07-12 13:15:22 +03:00
ppc-pv.txt KVM: PPC: e500: enable magic page 2011-07-12 13:16:37 +03:00
review-checklist.txt Correct occurrences of 2011-05-06 09:27:55 -07:00
timekeeping.txt