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loader: Bump the limit to 560,000 bytes for BIOS loader

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Further experience suggests we do not need as much margin. This was
mistakenly bumped to 570,000 in a prior commit, so this undoes that.

Sponsored by:		Netflix
This commit is contained in:
Warner Losh 2024-02-15 21:12:52 -07:00
parent 26c8dedef1
commit e5d1a21e50
1 changed files with 2 additions and 3 deletions
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5
stand/i386/loader/Makefile
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@ -1,4 +1,3 @@
HAVE_ZFS= ${MK_LOADER_ZFS}
LOADER_NET_SUPPORT?= yes
@ -23,7 +22,7 @@ VERSION_FILE= ${.CURDIR}/../loader/version
# non-random survey suggests that 20k-25k is a good value for 'most' machines.
# We also need to subtract maximum stack usage (20-25k).
#
# So 640k - 40k - 25k - 25k = 550k = 563,200 bytes, but use 550,000 below for
# So 640k - 40k - 25k - 25k = 550k = 563,200 bytes, but use 560,000 below for
# some extra buffer for more complex setups and/or wider BIOS lomem variation.
#
# Some systems use more stack or have BIOS reserve more RAM (or both), and will
@ -33,7 +32,7 @@ VERSION_FILE= ${.CURDIR}/../loader/version
#
# will tell you how many kiB of lomem are available.
#
LOADERSIZE?= 570000 # Largest known safe size for loader.bin
LOADERSIZE?= 560000 # Largest known safe size for loader.bin
.PATH: ${BOOTSRC}/i386/loader