STRUCT VMW_BO_BLIT_LINE_DATA(9)

💅 struct vmw_bo_blit_line_data(9) — Kernel API Manual, bestie edition 🎀

okay so this is a page from the Linux Kernel API manual, and it's literally about struct vmw_bo_blit_line_data — the convenience argument to vmw_bo_cpu_blit_line. it's giving "tiny struct, big responsibilities," and honestly? we're obsessed. 🦋

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✨ NAME ✨

struct vmw_bo_blit_line_data — the convenience argument to vmw_bo_cpu_blit_line. that's it, that's the whole vibe. 🫶

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🌸 SYNOPSIS 🌸

here's the whole struct, exactly as it lives, no cap:

struct vmw_bo_blit_line_data {
    u32 mapped_dst;
    u8 *dst_addr;
    struct page **dst_pages;
    u32 dst_num_pages;
    pgprot_t dst_prot;
    u32 mapped_src;
    u8 *src_addr;
    struct page **src_pages;
    u32 src_num_pages;
    pgprot_t src_prot;
    struct vmw_diff_cpy *diff;
 };

like look at it. it's a whole little bundle of field energy. 💜

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👑 Members 👑

welcome to the member-by-member tour, bestie, keep up 🧚

• mapped_dst — already mapped destination page index in dst_pages. so it's like "we already did this one, she's mapped, move along." ⭐
• dst_addr — kernel virtual address of the mapped destination page. the address. of the destination. of the mapped one. iconic. 📍
• dst_pages — array of destination bo pages. very "a group chat, but for pages." 🌈
• dst_num_pages — number of destination bo pages. yes, it counts them. someone has to. 💅
• dst_prot — destination bo page protection. protection! as in pgprot_t, not as in a bodyguard. keep up. 🛡️
• mapped_src — already mapped source page index in dst_pages. (yes, the original literally says dst_pages here — we're not touching it, that's exactly what the page says, periodt. 🔥)
• src_addr — kernel virtual address of the mapped source page. source edition. same energy, different side. 🌸
• src_pages — array of source bo pages. the source group chat. 😭
• src_num_pages — number of source bo pages. math queen. 👑
• src_prot — source bo page protection. pgprot_t again, obviously. 💖
• diff — struct vmw_diff_cpy, and in the end it gets forwarded to the memcpy routine. so it's the passenger who rides all the way to the memcpy routine and hops out there. lowkey cute. 🎀

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🔥 SEE ALSO 🔥

go read these next, bestie, they're all connected iykyk:

• Kernel file ./drivers/gpu/drm/vmwgfx/vmwgfx_blit.c
• vmw_find_first_diff(9)
• vmw_find_last_diff(9)
• vmw_memcpy(9)
• vmw_adjust_rect(9)
• vmw_diff_memcpy(9)
• vmw_bo_cpu_blit_line(9)
• vmw_bo_cpu_blit(9)

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that's the whole page, no notes. this one lives in ./drivers/gpu/drm/vmwgfx, dated October 2026 — so mark your calendar, screenshot it, send it to the group chat, and slay your blit lines responsibly. 💅✨💖