Use MSR to map framebuffer as WC (write-combining) = huge speed diff on real HW

2026-03-19 19:34:31 +01:00
parent 6a82d581fb
commit 424b4c4632
6 changed files with 133 additions and 2 deletions
--- a/include/arch/x86.h
+++ b/include/arch/x86.h
@@ -0,0 +1,13 @@
+#ifndef X86_H
+#define X86_H
+
+#include <stdbool.h>
+#include <stdint.h>
+
+uint64_t rdmsr(uint32_t msr);
+void cpuid(uint32_t leaf, uint32_t* eax, uint32_t* ebx, uint32_t* ecx, uint32_t* edx);
+void wrmsr(uint32_t msr, uint64_t value);
+bool x86_has_msr();
+void x86_arch_init();
+
+#endif