linux-kernel - Re: [PATCH v4] Documentation/gpu: VM

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Message-ID: <ZVYVk8KutkQE0RDU@archie.me>
Date:   Thu, 16 Nov 2023 20:13:55 +0700
From:   Bagas Sanjaya <bagasdotme@...il.com>
To:     Thomas Hellström 
        <thomas.hellstrom@...ux.intel.com>, intel-xe@...ts.freedesktop.org
Cc:     Rodrigo Vivi <rodrigo.vivi@...el.com>,
        Matthew Brost <matthew.brost@...el.com>,
        Danilo Krummrich <dakr@...hat.com>,
        Joonas Lahtinen <joonas.lahtinen@...ux.intel.com>,
        Oak Zeng <oak.zeng@...el.com>, Daniel Vetter <daniel@...ll.ch>,
        Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
        Francois Dugast <francois.dugast@...el.com>,
        Boris Brezillon <boris.brezillon@...labora.com>,
        Linux DRI Development <dri-devel@...ts.freedesktop.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Linux Documentation <linux-doc@...r.kernel.org>
Subject: Re: [PATCH v4] Documentation/gpu: VM_BIND locking document

On Wed, Nov 15, 2023 at 01:49:37PM +0100, Thomas Hellström wrote:
> +TODO: Pointer to the gpuvm code implementation if this iteration and

"... implementation of this iteration ..."

> +Using a MMU notifier for device DMA (and other methods) is described in
> +`this document
> +<https://docs.kernel.org/core-api/pin_user_pages.html#case-3-mmu-notifier-registration-with-or-without-page-faulting-hardware>`_.

You can use internal linking instead:

---- >8 ----
diff --git a/Documentation/core-api/pin_user_pages.rst b/Documentation/core-api/pin_user_pages.rst
index d3c1f6d8c0e0ec..6b5f7e6e7155fb 100644
--- a/Documentation/core-api/pin_user_pages.rst
+++ b/Documentation/core-api/pin_user_pages.rst
@@ -153,6 +153,8 @@ NOTE: Some pages, such as DAX pages, cannot be pinned with longterm pins. That's
 because DAX pages do not have a separate page cache, and so "pinning" implies
 locking down file system blocks, which is not (yet) supported in that way.
 
+.. _mmu-notifier-registration-case:
+
 CASE 3: MMU notifier registration, with or without page faulting hardware
 -------------------------------------------------------------------------
 Device drivers can pin pages via get_user_pages*(), and register for mmu
diff --git a/Documentation/gpu/drm-vm-bind-locking.rst b/Documentation/gpu/drm-vm-bind-locking.rst
index bc701157cb3414..08b6a47a6e592f 100644
--- a/Documentation/gpu/drm-vm-bind-locking.rst
+++ b/Documentation/gpu/drm-vm-bind-locking.rst
@@ -366,8 +366,7 @@ need to care about, but so far it has proven difficult to exclude
 certain notifications.
 
 Using a MMU notifier for device DMA (and other methods) is described in
-`this document
-<https://docs.kernel.org/core-api/pin_user_pages.html#case-3-mmu-notifier-registration-with-or-without-page-faulting-hardware>`_.
+:ref:`pin_user_pages() documentation <mmu-notifier-registration-case>`.
 
 Now the method of obtaining struct page references using
 get_user_pages() unfortunately can't be used under a dma_resv lock

Thanks.

-- 
An old man doll... just what I always wanted! - Clara