Commit b7c0d01719 for qemu.org

commit b7c0d0171950012e366eb046b792f407b749dd2e
Author: BALATON Zoltan <balaton@eik.bme.hu>
Date:   Sat Mar 21 17:30:16 2026 +0100

    ati-vga: Fix display updates in non-32 bit modes

    The memory_region_set_dirty used to mark changes should use stride
    value in vram which is normally only the same as surface_stride in 32
    bit modes. This caused missed updates in 8 and 16 bit modes.

    Signed-off-by: BALATON Zoltan <balaton@eik.bme.hu>
    Reviewed-by: Chad Jablonski <chad@jablonski.xyz>
    Message-ID: <6e1b83ef3fe7a1ebc246b474eb2b0c7cd05d5deb.1774110169.git.balaton@eik.bme.hu>
    Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>

diff --git a/hw/display/ati_2d.c b/hw/display/ati_2d.c
index cf2d4a08e2..23527b2c50 100644
--- a/hw/display/ati_2d.c
+++ b/hw/display/ati_2d.c
@@ -70,6 +70,7 @@ static void ati_set_dirty(VGACommonState *vga, const ATI2DCtx *ctx)
 {
     DisplaySurface *ds = qemu_console_surface(vga->con);

+    (void)ds;
     DPRINTF("%p %u ds: %p %d %d rop: %x\n", vga->vram_ptr, vga->vbe_start_addr,
             surface_data(ds), surface_stride(ds), surface_bits_per_pixel(ds),
             ctx->rop3 >> 16);
@@ -78,8 +79,8 @@ static void ati_set_dirty(VGACommonState *vga, const ATI2DCtx *ctx)
         vga->vbe_regs[VBE_DISPI_INDEX_YRES] * vga->vbe_line_offset) {
         memory_region_set_dirty(&vga->vram,
                                 vga->vbe_start_addr + ctx->dst_offset +
-                                ctx->dst.y * surface_stride(ds),
-                                ctx->dst.height * surface_stride(ds));
+                                ctx->dst.y * ctx->dst_stride,
+                                ctx->dst.height * ctx->dst_stride);
     }
 }