Hi,
This series implements support for allowing KVM guests to use the Arm
Statistical Profiling Extension (SPE).
The patches are also available on a branch[1]. The last two extra
patches are for the kvmtool if someone wants to play with it.
Regards,
Sudeep
v1->v2:
- Rebased on v5.2-rc1
- Adjusted sysreg_elx_s macros with merged clang build support
[1] git://git.kernel.org/pub/scm/linux/kernel/git/sudeep.holla/linux.git kvm_spe
Sudeep Holla (15):
KVM: arm64: add {read,write}_sysreg_elx_s versions for new registers
dt-bindings: ARM SPE: highlight the need for PPI partitions on
heterogeneous systems
arm64: KVM: reset E2PB correctly in MDCR_EL2 when exiting the
guest(VHE)
arm64: KVM: define SPE data structure for each vcpu
arm64: KVM: add access handler for SPE system registers
arm64: KVM/VHE: enable the use PMSCR_EL12 on VHE systems
arm64: KVM: split debug save restore across vm/traps activation
arm64: KVM/debug: drop pmscr_el1 and use sys_regs[PMSCR_EL1] in
kvm_cpu_context
arm64: KVM: add support to save/restore SPE profiling buffer controls
arm64: KVM: enable conditional save/restore full SPE profiling buffer
controls
arm64: KVM/debug: trap all accesses to SPE controls at EL1
KVM: arm64: add a new vcpu device control group for SPEv1
KVM: arm64: enable SPE support
KVMTOOL: update_headers: Sync kvm UAPI headers with linux v5.2-rc1
KVMTOOL: kvm: add a vcpu feature for SPEv1 support
.../devicetree/bindings/arm/spe-pmu.txt | 5 +-
Documentation/virtual/kvm/devices/vcpu.txt | 28 +++
arch/arm64/boot/dts/arm/rtsm_ve-aemv8a.dts | 185 +++++++++++-------
arch/arm64/configs/defconfig | 6 +
arch/arm64/include/asm/kvm_host.h | 19 +-
arch/arm64/include/asm/kvm_hyp.h | 26 ++-
arch/arm64/include/uapi/asm/kvm.h | 4 +
arch/arm64/kvm/Kconfig | 7 +
arch/arm64/kvm/Makefile | 1 +
arch/arm64/kvm/guest.c | 9 +
arch/arm64/kvm/hyp/debug-sr.c | 98 +++++++---
arch/arm64/kvm/hyp/switch.c | 18 +-
arch/arm64/kvm/reset.c | 3 +
arch/arm64/kvm/sys_regs.c | 35 ++++
include/kvm/arm_spe.h | 71 +++++++
include/uapi/linux/kvm.h | 1 +
virt/kvm/arm/arm.c | 5 +
virt/kvm/arm/spe.c | 163 +++++++++++++++
18 files changed, 570 insertions(+), 114 deletions(-)
create mode 100644 include/kvm/arm_spe.h
create mode 100644 virt/kvm/arm/spe.c
--
2.17.1
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