[lkml]   [2006]   [Nov]   [15]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
SubjectRe: [PATCH] i386-pda UP optimization
Eric Dumazet wrote:
> I wish Jeremy give us patches for UP machines so that %gs can be let untouched
> in entry.S (syscall entry/exit). A lot of ia32 machines are still using one
> CPU.
Unfortunately that would add cruft in a number of places. At the
moment, context switch, ptrace and vm86 all assume entry.S has saved %gs
into pt_regs, so they can treat it like any other register. If this
were conditional, it would require multiple places to add #ifndef
CONFIG_SMP code, which is not something I'd like to do without a good

To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to
More majordomo info at
Please read the FAQ at

 \ /
  Last update: 2006-11-15 18:55    [W:0.079 / U:4.492 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site