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From: Chris Wilson <chris@chris-wilson.co.uk>
To: linux-kernel@vger.kernel.org, intel-gfx@lists.freedesktop.org
Cc: linux-mm@kvack.org, Chris Wilson <chris@chris-wilson.co.uk>,
	Pavel Machek <pavel@ucw.cz>,
	Andrew Morton <akpm@linux-foundation.org>,
	Joerg Roedel <jroedel@suse.de>,
	Linus Torvalds <torvalds@linux-foundation.org>,
	Dave Airlie <airlied@redhat.com>,
	Joonas Lahtinen <joonas.lahtinen@linux.intel.com>,
	Rodrigo Vivi <rodrigo.vivi@intel.com>,
	stable@vger.kernel.org
Subject: [PATCH 2/4] drm/i915/gem: Sync the vmap PTEs upon construction
Date: Fri, 21 Aug 2020 09:50:09 +0100	[thread overview]
Message-ID: <20200821085011.28878-2-chris@chris-wilson.co.uk> (raw)
In-Reply-To: <20200821085011.28878-1-chris@chris-wilson.co.uk>

Since synchronising the PTE after assignment is a manual step, use the
newly exported interface to flush the PTE after assigning via
alloc_vm_area().

Reported-by: Pavel Machek <pavel@ucw.cz>
References: 2ba3e6947aed ("mm/vmalloc: track which page-table levels were modified")
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Joerg Roedel <jroedel@suse.de>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Dave Airlie <airlied@redhat.com>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Cc: Pavel Machek <pavel@ucw.cz>
Cc: <stable@vger.kernel.org> # v5.8+
---
 drivers/gpu/drm/i915/gem/i915_gem_pages.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/gpu/drm/i915/gem/i915_gem_pages.c b/drivers/gpu/drm/i915/gem/i915_gem_pages.c
index 7050519c87a4..0fee67f34d74 100644
--- a/drivers/gpu/drm/i915/gem/i915_gem_pages.c
+++ b/drivers/gpu/drm/i915/gem/i915_gem_pages.c
@@ -304,6 +304,7 @@ static void *i915_gem_object_map(struct drm_i915_gem_object *obj,
 		for_each_sgt_daddr(addr, iter, sgt)
 			**ptes++ = iomap_pte(iomap, addr, pgprot);
 	}
+	flush_vm_area(area);
 
 	if (mem != stack)
 		kvfree(mem);
-- 
2.20.1


WARNING: multiple messages have this Message-ID (diff)
From: Chris Wilson <chris@chris-wilson.co.uk>
To: linux-kernel@vger.kernel.org, intel-gfx@lists.freedesktop.org
Cc: Joerg Roedel <jroedel@suse.de>,
	stable@vger.kernel.org, Chris Wilson <chris@chris-wilson.co.uk>,
	linux-mm@kvack.org, Pavel Machek <pavel@ucw.cz>,
	Dave Airlie <airlied@redhat.com>,
	Andrew Morton <akpm@linux-foundation.org>,
	Linus Torvalds <torvalds@linux-foundation.org>
Subject: [Intel-gfx] [PATCH 2/4] drm/i915/gem: Sync the vmap PTEs upon construction
Date: Fri, 21 Aug 2020 09:50:09 +0100	[thread overview]
Message-ID: <20200821085011.28878-2-chris@chris-wilson.co.uk> (raw)
In-Reply-To: <20200821085011.28878-1-chris@chris-wilson.co.uk>

Since synchronising the PTE after assignment is a manual step, use the
newly exported interface to flush the PTE after assigning via
alloc_vm_area().

Reported-by: Pavel Machek <pavel@ucw.cz>
References: 2ba3e6947aed ("mm/vmalloc: track which page-table levels were modified")
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Joerg Roedel <jroedel@suse.de>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Dave Airlie <airlied@redhat.com>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Cc: Pavel Machek <pavel@ucw.cz>
Cc: <stable@vger.kernel.org> # v5.8+
---
 drivers/gpu/drm/i915/gem/i915_gem_pages.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/gpu/drm/i915/gem/i915_gem_pages.c b/drivers/gpu/drm/i915/gem/i915_gem_pages.c
index 7050519c87a4..0fee67f34d74 100644
--- a/drivers/gpu/drm/i915/gem/i915_gem_pages.c
+++ b/drivers/gpu/drm/i915/gem/i915_gem_pages.c
@@ -304,6 +304,7 @@ static void *i915_gem_object_map(struct drm_i915_gem_object *obj,
 		for_each_sgt_daddr(addr, iter, sgt)
 			**ptes++ = iomap_pte(iomap, addr, pgprot);
 	}
+	flush_vm_area(area);
 
 	if (mem != stack)
 		kvfree(mem);
-- 
2.20.1

_______________________________________________
Intel-gfx mailing list
Intel-gfx@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/intel-gfx

  reply	other threads:[~2020-08-21  8:50 UTC|newest]

Thread overview: 40+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-08-21  8:50 [PATCH 1/4] mm: Export flush_vm_area() to sync the PTEs upon construction Chris Wilson
2020-08-21  8:50 ` [Intel-gfx] " Chris Wilson
2020-08-21  8:50 ` Chris Wilson [this message]
2020-08-21  8:50   ` [Intel-gfx] [PATCH 2/4] drm/i915/gem: Sync the vmap " Chris Wilson
2020-08-21 12:41   ` Linus Torvalds
2020-08-21 12:41     ` [Intel-gfx] " Linus Torvalds
2020-08-21 12:41     ` Linus Torvalds
2020-08-21 13:01     ` Chris Wilson
2020-08-21 13:01       ` [Intel-gfx] " Chris Wilson
2020-08-21  8:50 ` [PATCH 3/4] drm/i915/gem: Use set_pte_at() for assigning the vmapped PTE Chris Wilson
2020-08-21  8:50   ` [Intel-gfx] " Chris Wilson
2020-08-21  8:50 ` [PATCH 4/4] drm/i915/gem: Replace reloc chain with terminator on error unwind Chris Wilson
2020-08-21  8:50   ` [Intel-gfx] " Chris Wilson
2020-08-21  9:14 ` [Intel-gfx] ✗ Fi.CI.CHECKPATCH: warning for series starting with [1/4] mm: Export flush_vm_area() to sync the PTEs upon construction Patchwork
2020-08-21  9:16 ` [Intel-gfx] ✗ Fi.CI.SPARSE: " Patchwork
2020-08-21  9:29 ` [Intel-gfx] ✓ Fi.CI.BAT: success " Patchwork
2020-08-21  9:51 ` [PATCH 1/4] " Joerg Roedel
2020-08-21  9:51   ` [Intel-gfx] " Joerg Roedel
2020-08-21  9:54   ` Chris Wilson
2020-08-21  9:54     ` [Intel-gfx] " Chris Wilson
2020-08-21 10:22     ` Joerg Roedel
2020-08-21 10:22       ` [Intel-gfx] " Joerg Roedel
2020-08-21 10:36       ` Chris Wilson
2020-08-21 10:36         ` [Intel-gfx] " Chris Wilson
2020-08-21 10:09 ` [PATCH] mm: Track page table modifications in __apply_to_page_range() construction Joerg Roedel
2020-08-21 10:09   ` [Intel-gfx] " Joerg Roedel
2020-08-21 10:13   ` Chris Wilson
2020-08-21 10:13     ` [Intel-gfx] " Chris Wilson
2020-08-21 10:23     ` Joerg Roedel
2020-08-21 10:23       ` [Intel-gfx] " Joerg Roedel
2020-08-21 10:39       ` Chris Wilson
2020-08-21 10:39         ` [Intel-gfx] " Chris Wilson
2020-08-21 11:38         ` Chris Wilson
2020-08-21 11:38           ` [Intel-gfx] " Chris Wilson
2020-08-21 12:18           ` Joerg Roedel
2020-08-21 12:18             ` [Intel-gfx] " Joerg Roedel
2020-08-21 10:53   ` Greg KH
2020-08-21 10:53     ` [Intel-gfx] " Greg KH
2020-08-21 10:27 ` [Intel-gfx] ✗ Fi.CI.BUILD: failure for series starting with mm: Track page table modifications in __apply_to_page_range() construction (rev2) Patchwork
2020-08-21 11:33 ` [Intel-gfx] ✓ Fi.CI.IGT: success for series starting with [1/4] mm: Export flush_vm_area() to sync the PTEs upon construction Patchwork

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