From 34dfaf5b8c74e6a0cb4d7babcd44930748d3d8a3 Mon Sep 17 00:00:00 2001 From: Mingcong Bai Date: Wed, 4 Jun 2025 10:57:57 +0800 Subject: [PATCH 3/5] drm/xe/regs: fix RING_CTL_SIZE(size) calculation This is a backported patch, so from the point of view of the most recent kernels, it is incomplete. --- drivers/gpu/drm/xe/regs/xe_engine_regs.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/xe/regs/xe_engine_regs.h b/drivers/gpu/drm/xe/regs/xe_engine_regs.h index 192e571348f6..f3514c74a109 100644 --- a/drivers/gpu/drm/xe/regs/xe_engine_regs.h +++ b/drivers/gpu/drm/xe/regs/xe_engine_regs.h @@ -52,7 +52,7 @@ #define RING_START(base) XE_REG((base) + 0x38) #define RING_CTL(base) XE_REG((base) + 0x3c) -#define RING_CTL_SIZE(size) ((size) - PAGE_SIZE) /* in bytes -> pages */ +#define RING_CTL_SIZE(size) ((size) - SZ_4K) /* in bytes -> pages */ #define RING_START_UDW(base) XE_REG((base) + 0x48) -- 2.47.2