From: Maarten Lankhorst <dev@lankhorst.se>
To: intel-xe@lists.freedesktop.org
Cc: Maarten Lankhorst <dev@lankhorst.se>
Subject: [PATCH v7 03/12] drm/xe: Add xe_ggtt_node_addr() to avoid dereferencing xe_ggtt_node
Date: Wed, 15 Oct 2025 09:47:12 +0200 [thread overview]
Message-ID: <20251015074708.1654014-17-dev@lankhorst.se> (raw)
In-Reply-To: <20251015074708.1654014-14-dev@lankhorst.se>
This function makes it possible to add an offset that is applied to
all xe_ggtt_node's, and hides the internals from all its users.
Signed-off-by: Maarten Lankhorst <dev@lankhorst.se>
---
drivers/gpu/drm/xe/xe_bo.h | 8 +++++---
drivers/gpu/drm/xe/xe_ggtt.c | 11 +++++++++++
drivers/gpu/drm/xe/xe_ggtt.h | 2 ++
3 files changed, 18 insertions(+), 3 deletions(-)
diff --git a/drivers/gpu/drm/xe/xe_bo.h b/drivers/gpu/drm/xe/xe_bo.h
index 353d607d301da..dd67a6f40a16d 100644
--- a/drivers/gpu/drm/xe/xe_bo.h
+++ b/drivers/gpu/drm/xe/xe_bo.h
@@ -9,6 +9,7 @@
#include <drm/ttm/ttm_tt.h>
#include "xe_bo_types.h"
+#include "xe_ggtt.h"
#include "xe_macros.h"
#include "xe_validation.h"
#include "xe_vm_types.h"
@@ -251,13 +252,14 @@ static inline u32
__xe_bo_ggtt_addr(struct xe_bo *bo, u8 tile_id)
{
struct xe_ggtt_node *ggtt_node = bo->ggtt_node[tile_id];
+ u64 offset;
if (XE_WARN_ON(!ggtt_node))
return 0;
- XE_WARN_ON(ggtt_node->base.size > xe_bo_size(bo));
- XE_WARN_ON(ggtt_node->base.start + ggtt_node->base.size > (1ull << 32));
- return ggtt_node->base.start;
+ offset = xe_ggtt_node_addr(ggtt_node);
+ XE_WARN_ON(offset + xe_bo_size(bo) > (1ull << 32));
+ return offset;
}
static inline u32
diff --git a/drivers/gpu/drm/xe/xe_ggtt.c b/drivers/gpu/drm/xe/xe_ggtt.c
index 42e3caa3a6d9c..05515037e2d6a 100644
--- a/drivers/gpu/drm/xe/xe_ggtt.c
+++ b/drivers/gpu/drm/xe/xe_ggtt.c
@@ -1079,3 +1079,14 @@ u64 xe_ggtt_read_pte(struct xe_ggtt *ggtt, u64 offset)
{
return ioread64(ggtt->gsm + (offset / XE_PAGE_SIZE));
}
+
+/**
+ * xe_ggtt_node_addr - Get @node offset in GGTT.
+ * @node: &xe_ggtt_node
+ *
+ * Get the GGTT offset for allocated node.
+ */
+u64 xe_ggtt_node_addr(const struct xe_ggtt_node *node)
+{
+ return node->base.start;
+}
diff --git a/drivers/gpu/drm/xe/xe_ggtt.h b/drivers/gpu/drm/xe/xe_ggtt.h
index d54a2ae2b4aa8..4a8ef1b824156 100644
--- a/drivers/gpu/drm/xe/xe_ggtt.h
+++ b/drivers/gpu/drm/xe/xe_ggtt.h
@@ -58,4 +58,6 @@ void xe_ggtt_might_lock(struct xe_ggtt *ggtt);
u64 xe_ggtt_encode_pte_flags(struct xe_ggtt *ggtt, struct xe_bo *bo, u16 pat_index);
u64 xe_ggtt_read_pte(struct xe_ggtt *ggtt, u64 offset);
+u64 xe_ggtt_node_addr(const struct xe_ggtt_node *node);
+
#endif
--
2.51.0
next prev parent reply other threads:[~2025-10-15 7:47 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-10-15 7:47 [PATCH v7 00/12] drm/xe: Make all xe_ggtt structs private Maarten Lankhorst
2025-10-15 7:47 ` [PATCH v7 01/12] drm/xe: Start using ggtt->start in preparation of balloon removal Maarten Lankhorst
2025-10-15 7:47 ` [PATCH v7 02/12] drm/xe: Convert xe_fb_pin to use a callback for insertion into GGTT Maarten Lankhorst
2025-10-15 7:47 ` Maarten Lankhorst [this message]
2025-10-15 21:49 ` [PATCH v7 03/12] drm/xe: Add xe_ggtt_node_addr() to avoid dereferencing xe_ggtt_node Matthew Brost
2025-10-16 6:13 ` Maarten Lankhorst
2025-10-17 20:53 ` Matthew Brost
2025-10-15 7:47 ` [PATCH v7 04/12] drm/xe/display: Avoid " Maarten Lankhorst
2025-10-15 21:53 ` Matthew Brost
2025-10-15 7:47 ` [PATCH v7 05/12] drm/xe: Do not dereference ggtt_node in xe_bo.c Maarten Lankhorst
2025-10-15 21:58 ` Matthew Brost
2025-10-16 6:33 ` Maarten Lankhorst
2025-10-17 20:54 ` Matthew Brost
2025-10-15 7:47 ` [PATCH v7 06/12] drm/xe: Improve xe_gt_sriov_pf_config GGTT handling Maarten Lankhorst
2025-10-15 22:04 ` Matthew Brost
2025-10-16 8:50 ` Michal Wajdeczko
2025-10-16 13:46 ` Maarten Lankhorst
2025-10-16 13:58 ` Michal Wajdeczko
2025-10-15 7:47 ` [PATCH v7 07/12] drm/xe: Privatize xe_ggtt_node Maarten Lankhorst
2025-10-15 22:05 ` Matthew Brost
2025-10-15 7:47 ` [PATCH v7 08/12] drm/xe: Make xe_ggtt_node offset relative to starting offset Maarten Lankhorst
2025-10-15 22:38 ` Matthew Brost
2025-10-16 6:40 ` Maarten Lankhorst
2025-10-15 7:47 ` [PATCH v7 09/12] drm/xe: Rewrite GGTT VF initialisation Maarten Lankhorst
2025-10-16 0:30 ` Matthew Brost
2025-10-15 7:47 ` [PATCH v7 10/12] drm/xe: Move struct xe_ggtt to xe_ggtt.c Maarten Lankhorst
2025-10-15 7:47 ` [PATCH v7 11/12] drm/xe: Make xe_ggtt_node_insert return a node Maarten Lankhorst
2025-10-15 22:44 ` Matthew Brost
2025-10-15 7:47 ` [PATCH v7 12/12] drm/xe: Remove xe_ggtt_node_allocated Maarten Lankhorst
2025-10-15 22:41 ` Matthew Brost
2025-10-15 9:47 ` ✗ CI.checkpatch: warning for drm/xe: Make all xe_ggtt structs private. (rev2) Patchwork
2025-10-15 9:49 ` ✓ CI.KUnit: success " Patchwork
2025-10-15 11:03 ` ✓ Xe.CI.BAT: " Patchwork
2025-10-15 19:55 ` ✗ Xe.CI.Full: failure " Patchwork
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