From: Christian Zigotzky <chzigotzky@xenosoft.de>
To: "Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com>,
Darren Stevens <darren@stevens-zone.net>,
Michael Ellerman <mpe@ellerman.id.au>,
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>
Subject: Kernel 4.7: PAGE_GUARDED and _PAGE_NO_CACHE
Date: Wed, 8 Jun 2016 17:47:23 +0200 [thread overview]
Message-ID: <d3753fa2-d88b-2e31-7d0d-d8952c29a12b@xenosoft.de> (raw)
In-Reply-To: <87r3c71zs9.fsf@skywalker.in.ibm.com>
Hi Aneesh,
We use it only in the file "pci-common.c".
Part of the Nemo patch with ISA_IO_BASE:
diff -rupN linux-4.7/arch/powerpc/kernel/pci-common.c
linux-4.7-nemo/arch/powerpc/kernel/pci-common.c
--- linux-4.7/arch/powerpc/kernel/pci-common.c 2016-05-20
10:23:06.588299920 +0200
+++ linux-4.7-nemo/arch/powerpc/kernel/pci-common.c 2016-05-20
10:21:28.652296699 +0200
@@ -723,6 +723,19 @@ void pci_process_bridge_OF_ranges(struct
isa_io_base =
(unsigned long)hose->io_base_virt;
#endif /* CONFIG_PPC32 */
+
+
+#ifdef CONFIG_PPC_PASEMI_SB600
+ /* Workaround for lack of device tree. New for
kernel 3.17: range.cpu_addr instead of cpu_addr and range.size instead
of size Ch. Zigotzky */
+ if (primary) {
+ __ioremap_at(range.cpu_addr, (void
*)ISA_IO_BASE,
+ range.size,
pgprot_val(pgprot_noncached(__pgprot(0))));
+ hose->io_base_virt = (void *)_IO_BASE;
+ /* _IO_BASE needs unsigned long long for the kernel 3.17
Ch. Zigotzky */
+ printk("Initialised io_base_virt 0x%lx _IO_BASE
0x%llx\n", (unsigned long)hose->io_base_virt, (unsigned long long)_IO_BASE);
+ }
+#endif
+
Cheers,
Christian
On 08 June 2016 at 5:11 PM, Aneesh Kumar K.V wrote:
>
> Can you check the value of ISA_IO_BASE where you are
> using it. If you are calling it early, you will find wrong value in
> that. With the latest kernel it is a variable and is initialized in
> hash__early_init_mmu();
>
> -aneesh
>
>
next prev parent reply other threads:[~2016-06-08 15:47 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 [this message]
2016-06-09 8:48 ` Christian Zigotzky
2016-06-09 11:15 ` Michael Ellerman
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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