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pc, pc64: ignore the 64-bit bar flag when reserving membar

a bar with bit 3 set means the bar is the low half of
a 64-bit wide bar.

--- a/sys/src/9/pc/pci.c

+++ b/sys/src/9/pc/pci.c

@@ -1083,7 +1083,7 @@

 	 */

 	for(p=pciroot; p; p=p->list)

 		for(i=0; i<nelem(p->mem); i++)

-			if(p->mem[i].bar && (p->mem[i].bar&1) == 0)

+			if((p->mem[i].bar&~4) != 0 && (p->mem[i].bar&1) == 0)

 				upareserve(p->mem[i].bar&~0x0F, p->mem[i].size);

 }

-- 

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