Yinghai Lu 7ab073b6e0 x86: max_low_pfn_mapped fix, #1 ...

fix crash on Ingo's big box:

calling  pci_iommu_init+0x0/0x17
PCI-DMA: Disabling AGP.
PCI-DMA: aperture base @ d0000000 size 65536 KB
PCI-DMA: using GART IOMMU.
PCI-DMA: Reserving 64MB of IOMMU area in the AGP aperture
BUG: unable to handle kernel paging request at ffff88000003be88
IP: [<ffffffff8026d377>] __alloc_pages_internal+0xc3/0x3f2
PGD 202063 PUD 206063 PMD 22fc00163 PTE 3b162
Oops: 0000 [1] SMP

and e820 is:

 BIOS-e820: 0000000000000000 - 000000000009ac00 (usable)
 BIOS-e820: 000000000009ac00 - 00000000000a0000 (reserved)
 BIOS-e820: 00000000000ca000 - 0000000000100000 (reserved)
 BIOS-e820: 0000000000100000 - 000000007ff70000 (usable)
 BIOS-e820: 000000007ff70000 - 000000007ff86000 (ACPI data)
 BIOS-e820: 000000007ff86000 - 0000000080000000 (ACPI NVS)
 BIOS-e820: 0000000080000000 - 00000000cfe00000 (usable)
 BIOS-e820: 00000000cfe00000 - 00000000d0000000 (reserved)
 BIOS-e820: 00000000e0000000 - 00000000f0000000 (reserved)
 BIOS-e820: 00000000fec00000 - 00000000fec10000 (reserved)
 BIOS-e820: 00000000fee00000 - 00000000fee01000 (reserved)
 BIOS-e820: 00000000fff80000 - 0000000100000000 (reserved)
 BIOS-e820: 0000000100000000 - 0000000830000000 (usable)

system has 32 GB RAM installed.

max_low_pfn_mapped is 0xcfe00, and GART aperture is not mapped.

So try to use init_memory_mapping to map that area, because the iommu
thinks that area is ram ...

Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com>
Cc: Suresh Siddha <suresh.b.siddha@intel.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

2008-07-13 08:19:15 +02:00

..

alpha

Alpha Linux kernel fails with inconsistent kallsyms data

2008-07-04 10:40:09 -07:00

arm

[ARM] 5131/1: Annotate platform_secondary_init with trace_hardirqs_off

2008-06-30 19:08:53 +01:00

avr32

avr32: Fix cpufreq oops when ondemand governor is default

2008-05-27 09:37:42 +02:00

blackfin

Blackfin arch: fix up section mismatch warning

2008-06-25 12:41:51 +08:00

cris

[PATCH] take init_files to fs/file.c

2008-05-16 17:22:20 -04:00

frv

Fix various old email addresses for dwmw2

2008-06-06 11:29:10 -07:00

h8300

[PATCH] take init_files to fs/file.c

2008-05-16 17:22:20 -04:00

ia64

[IA64] export account_system_vtime

2008-06-30 15:06:48 -07:00

m32r

[PATCH] take init_files to fs/file.c

2008-05-16 17:22:20 -04:00

m68k

m68k: enable CONFIG_COMPAT_BRK by default

2008-06-06 11:29:09 -07:00

m68knommu

m68knommu: init coldfire timer TRR with n - 1, not n

2008-06-12 18:05:40 -07:00

mips

[MIPS] Fix 32bit kernels on R4k with 128 byte cache line size

2008-07-08 19:33:46 +01:00

mn10300

mn10300: provide __ucmpdi2() for MN10300

2008-07-04 10:40:07 -07:00

parisc

parisc: fix off by one in setup_sigcontext32

2008-06-13 10:49:55 -04:00

powerpc

powerpc: Add missing reference to coherent_dma_mask

2008-07-08 21:06:35 -07:00

ppc

[POWERPC] Export empty_zero_page and copy_page in arch/ppc

2008-05-31 17:08:28 +10:00

s390

Merge branch 'kvm-updates-2.6.26' of git://git.kernel.org/pub/scm/linux/kernel/git/avi/kvm

2008-06-11 10:35:44 -07:00

sh

sh: Add -mno-fdpic to default flags.

2008-06-09 16:49:43 +09:00

sparc

sparc: switch /proc/led to seq_file

2008-06-03 15:21:21 -07:00

sparc64

sparc64: Prevent stack backtrace false positives on trap frames.

2008-05-21 21:50:01 -07:00

um

[UML] fix gcc ICEs and unresolved externs

2008-07-07 10:53:10 -07:00

v850

[PATCH] take init_files to fs/file.c

2008-05-16 17:22:20 -04:00

x86

x86: max_low_pfn_mapped fix, #1

2008-07-13 08:19:15 +02:00

xtensa

[PATCH] take init_files to fs/file.c

2008-05-16 17:22:20 -04:00

.gitignore

arch: Ignore arch/i386 and arch/x86_64

2008-01-19 21:29:39 -08:00

Kconfig

dma: add dma_*map*_attrs() interfaces

2008-04-29 08:06:11 -07:00