path: root/linux/syslinux.c
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authorH. Peter Anvin <hpa@zytor.com>2009-05-18 18:34:55 -0700
committerH. Peter Anvin <hpa@zytor.com>2009-05-18 18:34:55 -0700
commit905cad0bf5201bddb99675687bab9b6666b88f71 (patch)
treeb244863340b648a20015c660423d1bb5f2d639b8 /linux/syslinux.c
parent2b31eb4386fbea9dd44fc0b1d427dfdf20dd90ae (diff)
pxelinux: revert to a separate stack implementation
Return to using a private stack, except immediately around a pxenv call. The systems on which this broke has been lost in time, and with more code in 32-bit space there is a risk of deeper stacks (due to more mode-switch calls.) It is still a single configuration variable to flip back to the unified 16-bit stack, however. If most of the code is in 32-bit mode and there is small likelihood of several transitions, it might still be the best option in the end. Note: the PXE stack is 1.5K in size (and we must account for the possibility of receiving an interrupt.) Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Diffstat (limited to 'linux/syslinux.c')
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