[haiku-development] Re: Haiku on PowerPC - try 2. SUCCESS - PATCH attached REVISION3
- From: Alexander von Gluck <kallisti5@xxxxxxxxxxx>
- To: <haiku-development@xxxxxxxxxxxxx>
- Date: Wed, 22 Jul 2009 21:36:35 -0500
On Wed, 22 Jul 2009 21:16:09 -0500, Alexander von Gluck
<kallisti5@xxxxxxxxxxx> wrote:
> On Wed, 22 Jul 2009 20:47:48 -0500, Alexander von Gluck
> <kallisti5@xxxxxxxxxxx> wrote:
>> I got the info on running asm sync and asm isync by looking at a similar
>> bit of code in the
>> XNU kernel (124.1). We need to make sure that the PPC cpu does not
>> prefetch any operations
>> while we populate the contexts.
>
> Seems there are some conflicts with that previous patch that I missed.
> I've re-created the patch and made it a little simpler.
man.. worst patch release ever..
here is final.. final.. final.
i forgot to take out the old isync();
Index: src/system/boot/platform/openfirmware/arch/ppc/mmu.cpp
===================================================================
--- src/system/boot/platform/openfirmware/arch/ppc/mmu.cpp (revision 31707)
+++ src/system/boot/platform/openfirmware/arch/ppc/mmu.cpp (working copy)
@@ -970,7 +970,10 @@
// set up new page table and turn on translation again
for (int32 i = 0; i < 16; i++) {
+ asm volatile ("isync");
ppc_set_segment_register((void *)(i * 0x10000000),
sSegments[i]);
+ asm volatile ("sync");
// one segment describes 256 MB of memory
}
--
Thanks!
Alexander von Gluck
http://unixzen.com
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