[Xen-devel] [PATCH v4 0/5] xen/arm: vgic: Support 32-bit access for 64-bit register

[Julien Grall <julien.grall@xxxxxxxxxx>]

Hi all,

This series aims to fix the 32-bit access on 64-bit register. Some guest
OS such as FreeBSD and Linux (ITS and recently 32-bit guest using GICv3)
use 32-bit access and will crash at boot time.

Major changes in v4:
    - Patch #1-#6 of the previous version has been applied
    - Split "Optimize the way to store the target vCPU in the rank" in 3
    patchs to avoiding fixing a bug (byte access), changing behavior
    (handle zero write), and the actual optimizing in a single patch.

Sincerely yours,

Julien Grall (5):
  xen/arm: vgic-v2: Handle correctly byte write in ITARGETSR
  xen/arm: vgic-v2: Don't ignore a write in ITARGETSR if one field is 0
  xen/arm: vgic: Optimize the way to store the target vCPU in the rank
  xen/arm: vgic: Introduce helpers to extract/update/clear/set vGIC
    register ...
  xen/arm: vgic-v3: Support 32-bit access for 64-bit registers

 xen/arch/arm/vgic-v2.c     | 276 +++++++++++++++++++++++++++------------------
 xen/arch/arm/vgic-v3.c     | 264 +++++++++++++++++++++++++++----------------
 xen/arch/arm/vgic.c        |  45 ++++++--
 xen/include/asm-arm/vgic.h | 129 +++++++++++++++++----
 4 files changed, 474 insertions(+), 240 deletions(-)

-- 
2.1.4


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