Messages in this thread Patch in this message | | | Date | Wed, 9 Jul 2003 11:43:00 +0200 | From | Aurelien Jarno <> | Subject | Patch preempt and win4lin |
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Hi all,
I am maintaining the Debian package containing the preemptible kernel from Robert Love.
A user told me that win4lin stops working when the preemptible patch is used. He sent me a patch (see below); I have tested it on my computer it seems to work, however I don't understand exactly what it does.
Could anybody can give me some comments on this patch and the possible consequences it could generate?
Thanks Aurelien
## # This patch will apply to a 2.4.18 tree that has been patched with # preempt-kernel-rml-2.4.18-5.patch # --- linux-2.4.18-orig/arch/i386/kernel/entry.S Mon Feb 25 12:37:53 2002 ++++ linux-2.4.18/arch/i386/kernel/entry.S Wed Feb 27 07:16:58 2002 @@ -293,9 +293,8 @@ jnz restore_all cmpl $0,need_resched(%ebx) jz restore_all - movl SYMBOL_NAME(irq_stat)+irq_stat_local_bh_count CPU_INDX,%ecx - addl SYMBOL_NAME(irq_stat)+irq_stat_local_irq_count CPU_INDX,%ecx - jnz restore_all + testl $IF_MASK,EFLAGS(%esp) # Ints off (execption path) ? + jz restore_all incl preempt_count(%ebx) sti call SYMBOL_NAME(preempt_schedule) - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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