mp_machdep.c (was Re: [Fwd: Re: Bug reports requested - acpi])

[Nate Lawson]

John Baldwin wrote:
> It's probably cleaner to use pmap_invalidate_range().  Something like:
> 
> Index: mp_machdep.c
> ===================================================================
> RCS file: /usr/cvs/src/sys/i386/i386/mp_machdep.c,v
> retrieving revision 1.238
> diff -u -r1.238 mp_machdep.c
> --- mp_machdep.c	1 Sep 2004 06:42:01 -0000	1.238
> +++ mp_machdep.c	20 Sep 2004 20:50:35 -0000
> @@ -738,15 +738,19 @@
>  	int     x;
>  	int     size = *(int *) ((u_long) & bootMP_size);
>  	u_char *src = (u_char *) ((u_long) bootMP);
> -	u_char *dst = (u_char *) boot_address + KERNBASE;
> +	u_char *dst;
>  	u_int   boot_base = (u_int) bootMP;
>  	u_int8_t *dst8;
>  	u_int16_t *dst16;
>  	u_int32_t *dst32;
> +	vm_offset_t va;
>  
>  	POSTCODE(INSTALL_AP_TRAMP_POST);
>  
> -	pmap_kenter(boot_address + KERNBASE, boot_address);
> +	va = boot_address + KERNBASE;
> +	pmap_kenter(va, boot_address);
> +	pmap_invalidate_range(kernel_pmap, va, va + size);
> +	dst = (u_char *)va;
>  	for (x = 0; x < size; ++x)
>  		*dst++ = *src++;
>  
> It seems odd that this is needed though.  Does it go away if you use 
> DISABLE_PSE or DISABLE_PGE?

He's on a Pentium 2 or something.


-- 
Nate