Re: your mail

andrew banman
2016-09-20T22:23:25Z

Subject line got dropped the first time around. Will send again.

Apologies for the chatter,

Andrew

On Tue, Sep 20, 2016 at 05:21:06PM -0500, Andrew Banman wrote:
> From Andrew Banman <abanman@sgi.com> # This line is ignored.
> From: Andrew Banman <abanman@sgi.com>
> Subject: [PATCH 0/9] arch/x86/platform/uv: add UV4 support to BAU
> In-Reply-To:
>
> The following patch set adds support for UV4 architecture to the Broadcast
> Assist Unit (BAU). Major hardware changes to the BAU require these fixes to
> ensure correct operation and to avoid illegal MMR writes.
>
> arch/x86/include/asm/uv/uv_bau.h | 45 ++----------------------------
> arch/x86/platform/uv/tlb_uv.c | 114 ++++++++++++++++++++++++---------------------------------------
> -------------
>
> The patch set can be thought of in three logical groups:
>
> 1) General cleanup.
>
> [PATCH 1/9] arch/x86/platform/uv: BAU cleanup: update printks
> [PATCH 2/9] arch/x86/platform/uv: BAU cleanup: pq_init
> [PATCH 3/9] arch/x86/platform/uv: BAU replace uv_physnodeaddr
>
> These housekeeping patches make the subsequent UV4 patches clearer,
> and they should be done in any case.
>
>
> 2) Implement a new scheme to abstract UV version-specific functions.
>
> [PATCH 4/9] arch/x86/platform/uv: BAU add generic function pointers
> [PATCH 5/9] arch/x86/platform/uv: BAU use generic function pointers
>
> We add a struct of function pointers to define version-specific BAU
> operations. The philosophy is to abstract functions that perform the same
> operation on all UV versions but have different implementations. This will
> simplify their use in the body of the driver code and greatly simplify the
> UV4 patches to follow.
>
>
> 3) Add UV4 functionality.
>
> [PATCH 6/9] arch/x86/platform/uv: BAU UV4 populate uvhub_version
> [PATCH 7/9] arch/x86/platform/uv: BAU UV4 disable software timeout
> [PATCH 8/9] arch/x86/platform/uv: BAU UV4 fix payload queue setup
> [PATCH 9/9] arch/x86/platform/uv: BAU UV4 add version-specific
>
> These patches feature a minimal set of changes to make the BAU on UV4
> operational.
>
>
> This patch set has been tested for regressions on pre-UV4 architectures and
> for correct functionality on UV4. The patches apply cleanly to 4.8-rc7.
> Fine-tuned performance tweaking for UV4 will come in a future patch set.
>
>
> Thank you,
>
> Andrew Banman