[kvmtool,v3,0/9] arm64: Pointer Authentication and SVE support

Message

Dave Martin May 30, 2019, 3:13 p.m. UTC

This series, based on kvmtool master [1], implements basic support for
pointer authentication and SVE for guests.

A git tree is also available [2].

For pointer auth, I include Amit's v10 patch [3], with some additional
refactoring to sit nicely alongside SVE, and some cosmetic / diagnostic
tidyups discussed during review on-list.  (I've kept the extra changes
separate for easier review, but they could be folded if desired.)

[Maintainer note: I'd like Amit to comment on my changes on top of his
pointer auth patch, but the first 4 patches just re-sync headers and
could be pulled earlier if you feel like it.]


This series has been tested against Linux v5.2-rc1.

If people have a strong view on the --sve-vls parameter, I'd be
interested to discuss what that should look like.  Since this is
primarily a debug/experimentation option, the current implementation is
probably good enough though.

[1] 
git://git.kernel.org/pub/scm/linux/kernel/git/will/kvmtool.git master
https://git.kernel.org/pub/scm/linux/kernel/git/will/kvmtool.git/log/
eaeaf60808d6 ("virtio/blk: Avoid taking pointer to packed struct")

[2] [PATCH v10 3/5] KVM: arm64: Add userspace flag to enable pointer authentication
https://lore.kernel.org/linux-arm-kernel/[e-mail]/

[3]
git://linux-arm.org/kvmtool-dm.git sve/v3/head
http://linux-arm.org/git?p=kvmtool-dm.git;a=shortlog;h=refs/heads/sve/v3/head


Amit Daniel Kachhap (1):
  KVM: arm/arm64: Add a vcpu feature for pointer authentication

Dave Martin (8):
  update_headers.sh: Add missing shell quoting
  update_headers.sh: Cleanly report failure on error
  update_headers.sh: arm64: Copy sve_context.h if available
  update_headers: Sync kvm UAPI headers with linux v5.1-rc1
  arm/arm64: Factor out ptrauth vcpu feature setup
  arm64: Make ptrauth enable/disable diagnostics more user-friendly
  arm64: Add SVE support
  arm64: Select SVE vector lengths via the command line

 arm/aarch32/include/kvm/kvm-cpu-arch.h    |   7 ++
 arm/aarch64/include/asm/kvm.h             |  43 +++++++++
 arm/aarch64/include/asm/sve_context.h     |  53 +++++++++++
 arm/aarch64/include/kvm/kvm-config-arch.h |  16 +++-
 arm/aarch64/include/kvm/kvm-cpu-arch.h    |   3 +
 arm/aarch64/kvm-cpu.c                     | 148 ++++++++++++++++++++++++++++++
 arm/include/arm-common/kvm-config-arch.h  |   5 +
 arm/kvm-cpu.c                             |   5 +
 include/linux/kvm.h                       |  15 ++-
 powerpc/include/asm/kvm.h                 |  48 ++++++++++
 util/update_headers.sh                    |  25 +++--
 x86/include/asm/kvm.h                     |   1 +
 12 files changed, 360 insertions(+), 9 deletions(-)
 create mode 100644 arm/aarch64/include/asm/sve_context.h