STRUCT VMW_DIFF_CPY(9)

✨ NAME ✨

okay bestie, welcome to the struct vmw_diff_cpy(9) page in the Kernel API Manual 💅 this one is all about struct vmw_diff_cpy — the CPU blit information structure. it's the lil' struct holding the deets for a CPU blit, and yes, we're gonna get into every field 🫶

🌸 SYNOPSIS 🌸

here's the exact struct, no cap — keep every line and character exactly like this:

       struct vmw_diff_cpy {
           struct drm_rect rect;
           size_t line;
           size_t line_offset;
           int cpp;
           void (*do_cpy)(struct vmw_diff_cpy *diff, u8 *dest, const u8 *src,
       size_t n);
        };

🎀 Members 🎀

• rect — the output bounding box rectangle. that's the rectangle the blit is working with, fr 🫶
• line — the current line of the blit ✨
• line_offset — offset of the current line segment 👑
• cpp — bytes per pixel — aka the granularity information 🎀
• do_cpy — which memcpy function to use. the function-pointer bestie handling the copy 💅

💖 SEE ALSO 💖

the kernel file is ./drivers/gpu/drm/vmwgfx/vmwgfx_drv.h, and it's giving "go check these out next" energy:

• struct vmw_resource(9)
• struct vmw_surface_metadata(9)
• struct vmw_surface(9)
• struct vmw_res_cache_entry(9)
• enum vmw_dma_map_mode(9)
• struct vmw_sg_table(9)
• struct vmw_piter(9)
• struct vmw_sw_context(9)
• enum vmw_sm_type(9)
• has_sm4_context(9)
• has_sm4_1_context(9)
• has_sm5_context(9)
• has_gl43_context(9)
• vmw_resource_mob_attached(9)
• vmw_fifo_caps(9)
• vmw_is_cursor_bypass3_enabled(9)
• vmw_piter_next(9)
• vmw_piter_dma_addr(9)
• vmw_piter_page(9)
• VMW_DEBUG_USER(9)
• VMW_DEBUG_KMS(9)
• vmw_fifo_mem_read(9)
• vmw_fifo_mem_write(9)

with all my love from ./drivers/gpu/drm/vmwgfx, October 2026 — manual: struct vmw_diff_cpy(9) 💖🫶✨