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Fix the memory scaling bug when basemem was converted to Kbytes from

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bytes for AMD64.  Otherwise the AP will be started at 640K which
won't work.  Bug found on a Xeon 64bit system.
This commit is contained in:
ambrisko 2004-08-13 22:30:55 +00:00
parent 927adfff57
commit 30b952654a
1 changed files with 1 additions and 1 deletions
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2
sys/amd64/amd64/mp_machdep.c
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@ -198,7 +198,7 @@ mp_bootaddress(u_int basemem)
bootMP_size = mptramp_end - mptramp_start;
boot_address = trunc_page(basemem * 1024); /* round down to 4k boundary */
if ((basemem - boot_address) < bootMP_size)
if (((basemem * 1024) - boot_address) < bootMP_size)
boot_address -= PAGE_SIZE; /* not enough, lower by 4k */
/* 3 levels of page table pages */
mptramp_pagetables = boot_address - (PAGE_SIZE * 3);