pc, pc64: make mtrr() callable from interrupt context and before mpinit

[plan9front.git] / sys / src / 9 / pc / screen.c

diff --git a/sys/src/9/pc/screen.c b/sys/src/9/pc/screen.c
index f076b44311d2ebbfbd2450fd860a6ca11ca3802f..494c6e908909c2b39da3bd50a578c494ee18bac9 100644 (file)
--- a/sys/src/9/pc/screen.c
+++ b/sys/src/9/pc/screen.c
@@ -512,13 +512,7 @@ vgalinearaddr0(VGAscr *scr, ulong paddr, int size)
        scr->paddr = paddr;
        scr->apsize = nsize;
 
-       if(up != nil){
-               /* let mtrr harmlessly fail on old CPUs, e.g., P54C */
-               if(!waserror()){
-                       mtrr(npaddr, nsize, "wc");
-                       poperror();
-               }
-       }
+       mtrr(npaddr, nsize, "wc");
 
        return nil;
 }