[00/15] arm64: KVM: add SPE profiling support for guest

Message

Sudeep Holla May 23, 2019, 10:34 a.m. UTC

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