Re: [Xen-devel] [PATCH v3 0/9] xen/arm: vgic: Support 32-bit access for 64-bit register

[Julien Grall <julien.grall@xxxxxxxxxx>]

Hi Ian,

It looks like there is only comment on patch #7. Would it be possible to
apply #1-#6? I will resend the last 3 patches after I agree with Stefano
about the chosen behavior in #7.

Regards,

On 07/10/15 15:41, Julien Grall wrote:
> Hi all,
> 
> This series aims to fixc the 32-bit access on 64-bit register. Some guest
> OS such as FreeBSD and Linux (only in ITS) use 32-bit access and will crash
> at boot time.
> 
> I took the opportunity to go further and optimize the way Xen is storing
> registers such as GICD_IPRIORITYR, GICD_ITARGETSR and GICD_IROUTER.
> 
> For all changes see in each patch.
> 
> A branch has been pushed based on the latest staging:
> 
> git://xenbits.xen.org/people/julieng/xen-unstable.git branch gicv3-32bit-v2
> 
> 
> Julien Grall (9):
>   xen/arm: io: remove mmio_check_t typedef
>   xen/arm: io: Extend write/read handler to pass the register in
>     parameter
>   xen/arm: io: Support sign-extension for every read access
>   xen/arm: vgic: ctlr stores a 32-bit hardware register so use uint32_t
>   xen/arm: vgic: Optimize the way to store GICD_IPRIORITYR in the rank
>   xen/arm: vgic: Introduce a new field to store the rank index and use
>     it
>   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/io.c            |  34 ++++-
>  xen/arch/arm/vgic-v2.c       | 308 +++++++++++++++++++------------------
>  xen/arch/arm/vgic-v3.c       | 353 
> +++++++++++++++++++++++--------------------
>  xen/arch/arm/vgic.c          |  70 +++++++--
>  xen/arch/arm/vuart.c         |  20 ++-
>  xen/include/asm-arm/domain.h |   2 +-
>  xen/include/asm-arm/mmio.h   |   7 +-
>  xen/include/asm-arm/vgic.h   | 151 ++++++++++++++----
>  8 files changed, 582 insertions(+), 363 deletions(-)
> 


-- 
Julien Grall

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