[PATCH 4/5] gxt4500: Use write-combining for framebuffer

Use write-combining for framebuffer to greatly improve performance on x86. Signed-off-by: Ondrej Zary --- drivers/video/fbdev/gxt4500.c |8 ++-- 1 file changed, 6 insertions(+), 2 deletions(-) diff --git a/drivers/video/fbdev/gxt4500.c b/drivers/video/fbdev/gxt4500.c index 442b07c..e0d1

[PATCH 4/5] gxt4500: Use write-combining for framebuffer (PAT and MTRR)

Use write-combining for framebuffer to greatly improve performance on x86. Add both ioremap_wc (for systems with PAT) and MTRR setup for non-PAT systems. Signed-off-by: Ondrej Zary --- drivers/video/fbdev/gxt4500.c | 32 ++-- 1 file changed, 30 insertions(+), 2 dele