From: Michael Ellerman <mpe@ellerman.id.au>
To: Christian Zigotzky <chzigotzky@xenosoft.de>,
"Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com>,
Darren Stevens <darren@stevens-zone.net>,
Benjamin Herrenschmidt <benh@kernel.crashing.org>,
linuxppc-dev@lists.ozlabs.org,
Michael Ellerman <michaele@au1.ibm.com>,
Julian Margetson <runaway@candw.ms>,
Adrian Cox <adrian@humboldt.co.uk>,
"R.T.Dickinson" <rtd@a-eon.com>,
"R.T.Dickinson" <rtd2@xtra.co.nz>, Pat Wall <pjwall@mac.com>,
Pat Wall <pjwall@me.com>,
"contact@a-eon.com" <contact@a-eon.com>,
Matthew Leaman <matthew@a-eon.biz>,
luigi burdo <intermediadc@hotmail.com>,
Christian Zigotzky <info@xenosoft.de>
Subject: Re: Kernel 4.7: PAGE_GUARDED and _PAGE_NO_CACHE
Date: Thu, 09 Jun 2016 21:15:10 +1000 [thread overview]
Message-ID: <1465470910.31662.10.camel@ellerman.id.au> (raw)
In-Reply-To: <bab57839-0160-ae01-3cfb-6950067652c0@xenosoft.de>
On Thu, 2016-06-09 at 10:48 +0200, Christian Zigotzky wrote:
> Shall I modify the workaround? Is the workaround for lack of the device
> tree the problem?
I don't think so.
You could try this patch to try and isolate it:
diff --git a/arch/powerpc/include/asm/book3s/64/pgtable.h b/arch/powerpc/include/asm/book3s/64/pgtable.h
index 88a5ecaa157b..ae2f2705e8a0 100644
--- a/arch/powerpc/include/asm/book3s/64/pgtable.h
+++ b/arch/powerpc/include/asm/book3s/64/pgtable.h
@@ -251,7 +251,7 @@ extern unsigned long ioremap_bot;
* PHB_IO_BASE = ISA_IO_BASE + 64K to ISA_IO_BASE + 2G, PHB IO spaces
* IOREMAP_BASE = ISA_IO_BASE + 2G to VMALLOC_START + PGTABLE_RANGE
*/
-#define KERN_IO_START (KERN_VIRT_START + (KERN_VIRT_SIZE >> 1))
+#define KERN_IO_START (H_KERN_VIRT_START + (H_KERN_VIRT_SIZE >> 1))
#define FULL_IO_SIZE 0x80000000ul
#define ISA_IO_BASE (KERN_IO_START)
#define ISA_IO_END (KERN_IO_START + 0x10000ul)
cheers
next prev parent reply other threads:[~2016-06-09 11:15 UTC|newest]
Thread overview: 45+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-05-23 4:38 PAGE_GUARDED Christian Zigotzky
2016-05-23 8:01 ` PAGE_GUARDED Benjamin Herrenschmidt
2016-05-24 10:48 ` PAGE_GUARDED Christian Zigotzky
2016-05-24 11:16 ` PAGE_GUARDED Benjamin Herrenschmidt
2016-05-24 13:37 ` PAGE_GUARDED Christian Zigotzky
2016-05-24 15:37 ` PAGE_GUARDED Aneesh Kumar K.V
2016-05-25 6:58 ` PAGE_GUARDED Christian Zigotzky
2016-05-25 11:44 ` PAGE_GUARDED Christian Zigotzky
2016-06-04 7:19 ` Kernel 4.7: PAGE_GUARDED and _PAGE_NO_CACHE Christian Zigotzky
2016-06-04 7:40 ` Christian Zigotzky
2016-06-04 11:08 ` Christian Zigotzky
2016-06-04 14:46 ` Aneesh Kumar K.V
2016-06-04 15:13 ` Christian Zigotzky
2016-06-04 15:25 ` Christian Zigotzky
2016-06-05 16:09 ` Christian Zigotzky
2016-06-06 0:57 ` Michael Ellerman
2016-06-06 1:23 ` Julian Margetson
2016-06-06 2:00 ` Michael Ellerman
2016-06-06 8:59 ` Julian Margetson
2016-06-06 0:54 ` Michael Ellerman
2016-06-04 14:42 ` Aneesh Kumar K.V
2016-06-04 15:07 ` Christian Zigotzky
2016-06-06 0:51 ` Michael Ellerman
2016-06-06 5:21 ` Christian Zigotzky
2016-06-07 20:17 ` Christian Zigotzky
2016-06-07 22:14 ` Christian Zigotzky
2016-06-08 1:51 ` Michael Ellerman
2016-06-08 2:52 ` Michael Ellerman
2016-06-08 10:58 ` Christian Zigotzky
2016-06-08 11:30 ` Michael Ellerman
2016-06-08 12:50 ` Christian Zigotzky
2016-06-08 11:33 ` Darren Stevens
2016-06-08 13:24 ` Christian Zigotzky
2016-06-08 13:51 ` Christian Zigotzky
2016-06-08 13:52 ` Michael Ellerman
2016-06-08 15:11 ` Aneesh Kumar K.V
2016-06-08 15:47 ` Christian Zigotzky
2016-06-09 8:48 ` Christian Zigotzky
2016-06-09 11:15 ` Michael Ellerman [this message]
2016-06-09 13:13 ` Christian Zigotzky
2016-06-13 8:14 ` Christian Zigotzky
2016-06-13 8:19 ` Benjamin Herrenschmidt
2016-06-13 18:09 ` Christian Zigotzky
2016-06-22 19:07 ` Christian Zigotzky
2016-06-22 19:58 ` luigi burdo
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