Luca Tettamanti wrote:
> With GOOD_APIC apic_read_around is a nop, while apic_write_around is a
> normal write. With !GOOD_APIC apic_write_around writes to the APIC reg
> using xchg. With !GOOD_APIC and this patch:
>
> --- include/asm-i386/apic.h~ 2007-04-26 05:08:32.000000000 +0200
> +++ include/asm-i386/apic.h 2007-06-13 22:35:00.000000000 +0200
> @@ -56,7 +56,8 @@
> static __inline fastcall void native_apic_write_atomic(unsigned long reg,
> unsigned long v)
> {
> - xchg((volatile unsigned long *)(APIC_BASE+reg), v);
> +// xchg((volatile unsigned long *)(APIC_BASE+reg), v);
> + *((volatile unsigned long *)(APIC_BASE+reg)) = v;
> }
>
> static __inline fastcall unsigned long native_apic_read(unsigned long reg)
>
> The kernel boots fine.
>
Looking at the xchg emulation code, it seems fine, but clearly it
isn't. Can you add logging to the kernel apic driver and to the qemu
device emulation (qemu/hw/apic.c, apic_mem_readl()/apic_mem_writel())
and compare the results?
--
error compiling committee.c: too many arguments to function
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