INIT handler return does not work

INIT handler return does not work

[Francois WELLENREITER]

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                                           Hi everyone,


          first of all, my best wishes for this new year 2006.

Second, I have worked on INIT handler code for BULL NovaScale machines
and it appeared that return code do not work well due to a false argument
returned by OS_INIT function (in fact the pal_min_state pointer
physical address [recorded in r22 register] is not uncached as it is
specified).
The reason is that the computation of this register is not well done,
we have a virtual address in region 6 (souding like 0xC00000007F.....)
to be converted into an uncached physical address (0x800000007F....).
I think that the patch in attachment with this mail may correct this error.
Best regards,


                                              Francois WELLENREITER

[-- Attachment #2: correct_init_return.patch --]
[-- Type: text/x-patch, Size: 446 bytes --]

--- linux-2.6.15_reference/arch/ia64/kernel/mca_asm.S	2006-01-03 04:21:10.000000000 +0100
+++ linux-2.6.15_modified/arch/ia64/kernel/mca_asm.S	2006-01-10 16:10:31.000000000 +0100
@@ -847,7 +847,7 @@
 	;;
 	mov cr.iim=temp3
 	mov cr.iha=temp4
-	dep r22=0,r22,62,2	// pal_min_state, physical, uncached
+	dep r22=0,r22,62,1	// pal_min_state, physical, uncached
 	mov IA64_KR(CURRENT)=r21
 	ld8 r8=[temp1]		// os_status
 	ld8 r10=[temp2]		// context