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[PATCH] Fix UML on non-standard VM split hosts
This fixes UML on hosts with non-standard VM splits. We had changed the config variable that controls UML behavior on such hosts, but not propogated the change everywhere. In particular, the values of STUB_CODE and STUB_DATA relied on the old variable. I also reformatted the HOST_VMSPLIT_3G help to make it more standard. Spotted by uml@flonatel.org. Signed-off-by: Jeff Dike <jdike@addtoit.com> Cc: Blaisorblade <blaisorblade@yahoo.it> Cc: Pravin <shindepravin@gmail.com> Cc: <uml@flonatel.org> Cc: <stable@kernel.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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@ -19,22 +19,22 @@ config SEMAPHORE_SLEEPERS
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choice
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prompt "Host memory split"
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default HOST_VMSPLIT_3G
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---help---
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This is needed when the host kernel on which you run has a non-default
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(like 2G/2G) memory split, instead of the customary 3G/1G. If you did
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not recompile your own kernel but use the default distro's one, you can
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safely accept the "Default split" option.
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help
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This is needed when the host kernel on which you run has a non-default
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(like 2G/2G) memory split, instead of the customary 3G/1G. If you did
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not recompile your own kernel but use the default distro's one, you can
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safely accept the "Default split" option.
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It can be enabled on recent (>=2.6.16-rc2) vanilla kernels via
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CONFIG_VM_SPLIT_*, or on previous kernels with special patches (-ck
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patchset by Con Kolivas, or other ones) - option names match closely the
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host CONFIG_VM_SPLIT_* ones.
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It can be enabled on recent (>=2.6.16-rc2) vanilla kernels via
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CONFIG_VM_SPLIT_*, or on previous kernels with special patches (-ck
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patchset by Con Kolivas, or other ones) - option names match closely the
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host CONFIG_VM_SPLIT_* ones.
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A lower setting (where 1G/3G is lowest and 3G/1G is higher) will
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tolerate even more "normal" host kernels, but an higher setting will be
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stricter.
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A lower setting (where 1G/3G is lowest and 3G/1G is higher) will
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tolerate even more "normal" host kernels, but an higher setting will be
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stricter.
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So, if you do not know what to do here, say 'Default split'.
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So, if you do not know what to do here, say 'Default split'.
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config HOST_VMSPLIT_3G
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bool "Default split (3G/1G user/kernel host split)"
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@ -67,13 +67,13 @@ config 3_LEVEL_PGTABLES
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config STUB_CODE
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hex
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default 0xbfffe000 if !HOST_2G_2G
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default 0x7fffe000 if HOST_2G_2G
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default 0xbfffe000 if !HOST_VMSPLIT_2G
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default 0x7fffe000 if HOST_VMSPLIT_2G
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config STUB_DATA
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hex
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default 0xbffff000 if !HOST_2G_2G
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default 0x7ffff000 if HOST_2G_2G
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default 0xbffff000 if !HOST_VMSPLIT_2G
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default 0x7ffff000 if HOST_VMSPLIT_2G
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config STUB_START
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hex
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