Print a loud warning message if we run out of MTRRs.
Signed-off-by: Carl-Daniel Hailfinger <[email protected]>
==================================================================
--- corebootv2/src/cpu/x86/mtrr/mtrr.c (revision 3935)
+++ corebootv2/src/cpu/x86/mtrr/mtrr.c (working copy)
@@ -228,9 +228,14 @@
unsigned long range_startk, unsigned long range_sizek,
unsigned long next_range_startk, unsigned char type, unsigned
address_bits)
{
- if (!range_sizek || (reg >= BIOS_MTRRS)) {
+ if (!range_sizek) {
+ printk_debug("range_to_mtrr called for empty range\n");
return reg;
}
+ if (reg >= BIOS_MTRRS) {
+ printk_emerg("Running out of variable MTRRs!\n");
+ return reg;
+ }
while(range_sizek) {
unsigned long max_align, align;
unsigned long sizek;
@@ -249,8 +254,10 @@
set_var_mtrr(reg++, range_startk, sizek, type, address_bits);
range_startk += sizek;
range_sizek -= sizek;
- if (reg >= BIOS_MTRRS)
+ if (reg >= BIOS_MTRRS) {
+ printk_emerg("Running out of variable MTRRs!\n");
break;
+ }
}
return reg;
}
--
http://www.hailfinger.org/
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