Here is v2 of the TPR access optimization. Changes:
- plug race between patching and running VCPUs accessing the same TPR
instruction by stopping VCPUs during patch process
- realized forward/backward check in evaluate_tpr_instruction via a
table but kept patch_instruction as is (too much variations for a
table-driven approach)
- dropped smp_cpus == 1 special case from get_kpcr_number
- fixed comment why R/W ROM alias has to be page-aligned
The series is also available at
git://git.kiszka.org/qemu-kvm.git queues/kvm-tpr
Please review/apply.
CC: Paolo Bonzini <pbonzini@xxxxxxxxxx>
Jan Kiszka (8):
kvm: Set cpu_single_env only once
Allow to use pause_all_vcpus from VCPU context
target-i386: Add infrastructure for reporting TPR MMIO accesses
kvmvapic: Add option ROM
kvmvapic: Introduce TPR access optimization for Windows guests
kvmvapic: Simplify mp/up_set_tpr
optionsrom: Reserve space for checksum
kvmvapic: Use optionrom helpers
.gitignore | 1 +
Makefile | 2 +-
Makefile.target | 3 +-
cpu-all.h | 3 +-
cpus.c | 13 +
hw/apic.c | 126 ++++++-
hw/apic.h | 2 +
hw/apic_common.c | 68 ++++-
hw/apic_internal.h | 27 ++
hw/kvm/apic.c | 32 ++
hw/kvmvapic.c | 774 +++++++++++++++++++++++++++++++++++++++++
kvm-all.c | 5 -
pc-bios/optionrom/Makefile | 2 +-
pc-bios/optionrom/kvmvapic.S | 335 ++++++++++++++++++
pc-bios/optionrom/optionrom.h | 3 +-
target-i386/cpu.h | 9 +
target-i386/helper.c | 19 +
target-i386/kvm.c | 24 ++-
18 files changed, 1423 insertions(+), 25 deletions(-)
create mode 100644 hw/kvmvapic.c
create mode 100644 pc-bios/optionrom/kvmvapic.S
--
1.7.3.4
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