| Commit message (Collapse) | Author | Age | Files | Lines |
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Pull MIPS updates from Ralf Baechle:
"MIPS updates:
- All the things that didn't make 3.10.
- Removes the Windriver PPMC platform. Nobody will miss it.
- Remove a workaround from kernel/irq/irqdomain.c which was there
exclusivly for MIPS. Patch by Grant Likely.
- More small improvments for the SEAD 3 platform
- Improvments on the BMIPS / SMP support for the BCM63xx series.
- Various cleanups of dead leftovers.
- Platform support for the Cavium Octeon-based EdgeRouter Lite.
Two large KVM patchsets didn't make it for this pull request because
their respective authors are vacationing"
* 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus: (124 commits)
MIPS: Kconfig: Add missing MODULES dependency to VPE_LOADER
MIPS: BCM63xx: CLK: Add dummy clk_{set,round}_rate() functions
MIPS: SEAD3: Disable L2 cache on SEAD-3.
MIPS: BCM63xx: Enable second core SMP on BCM6328 if available
MIPS: BCM63xx: Add SMP support to prom.c
MIPS: define write{b,w,l,q}_relaxed
MIPS: Expose missing pci_io{map,unmap} declarations
MIPS: Malta: Update GCMP detection.
Revert "MIPS: make CAC_ADDR and UNCAC_ADDR account for PHYS_OFFSET"
MIPS: APSP: Remove <asm/kspd.h>
SSB: Kconfig: Amend SSB_EMBEDDED dependencies
MIPS: microMIPS: Fix improper definition of ISA exception bit.
MIPS: Don't try to decode microMIPS branch instructions where they cannot exist.
MIPS: Declare emulate_load_store_microMIPS as a static function.
MIPS: Fix typos and cleanup comment
MIPS: Cleanup indentation and whitespace
MIPS: BMIPS: support booting from physical CPU other than 0
MIPS: Only set cpu_has_mmips if SYS_SUPPORTS_MICROMIPS
MIPS: GIC: Fix gic_set_affinity infinite loop
MIPS: Don't save/restore OCTEON wide multiplier state on syscalls.
...
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CAVIUM_OCTEON_SOC most place we used to use CPU_CAVIUM_OCTEON. This
allows us to CPU_CAVIUM_OCTEON in places where we have no OCTEON SOC.
Remove CAVIUM_OCTEON_SIMULATOR as it doesn't really do anything, we can
get the same configuration with CAVIUM_OCTEON_SOC.
Signed-off-by: David Daney <david.daney@cavium.com>
Cc: linux-mips@linux-mips.org
Cc: linux-ide@vger.kernel.org
Cc: linux-edac@vger.kernel.org
Cc: linux-i2c@vger.kernel.org
Cc: netdev@vger.kernel.org
Cc: spi-devel-general@lists.sourceforge.net
Cc: devel@driverdev.osuosl.org
Cc: linux-usb@vger.kernel.org
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Acked-by: Wolfram Sang <wsa@the-dreams.de>
Acked-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Patchwork: https://patchwork.linux-mips.org/patch/5295/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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Pull AMD EDAC update from Borislav Petkov:
"Add MCE signatures for family 0x15, models 30-3f"
* tag 'edac_for_3.11' of git://git.kernel.org/pub/scm/linux/kernel/git/bp/bp:
EDAC, MCE, AMD: Add an MCE signature for new Fam15h models
EDAC: Replace strict_strtoul() with kstrtoul()
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Add a new error signature for Family 15h, models 30h-3fh. Patch has been
tested on Fam15h using mce_amd_inj facility and has been verified to
work correctly.
Signed-off-by: Aravind Gopalakrishnan <aravind.gopalakrishnan@amd.com>
[ cleanup commit message and error string ]
Signed-off-by: Borislav Petkov <bp@suse.de>
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The usage of strict_strtoul() is not preferred, because strict_strtoul()
is obsolete. Thus, kstrtoul() should be used.
Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
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Ever since commit 45f035ab9b8f ("CONFIG_HOTPLUG should be always on"),
it has been basically impossible to build a kernel with CONFIG_HOTPLUG
turned off. Remove all the remaining references to it.
Cc: Russell King <linux@arm.linux.org.uk>
Cc: Doug Thompson <dougthompson@xmission.com>
Cc: Bjorn Helgaas <bhelgaas@google.com>
Cc: Steven Whitehouse <swhiteho@redhat.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Pavel Machek <pavel@ucw.cz>
Cc: "Rafael J. Wysocki" <rjw@sisk.pl>
Cc: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Acked-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Acked-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Fix yet another issue caught by 8f46baaa7ec6c ("base: core: WARN() about
bogus permissions on device attributes").
Signed-off-by: Borislav Petkov <bp@suse.de>
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git://git.kernel.org/pub/scm/linux/kernel/git/bp/bp
Pull two small EDAC fixes from Borislav Petkov.
* tag 'edac_fixes_for_3.10' of git://git.kernel.org/pub/scm/linux/kernel/git/bp/bp:
EDAC: Don't give write permission to read-only files
EDAC, mc_sysfs.c: Fix string array pointer types
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I get the following warning on boot:
------------[ cut here ]------------
WARNING: at drivers/base/core.c:575 device_create_file+0x9a/0xa0()
Hardware name: -[8737R2A]-
Write permission without 'store'
...
</snip>
Drilling down, this is related to dynamic channel ce_count attribute
files sporting a S_IWUSR mode without a ->store() function. Looking
around, it appears that they aren't supposed to have a ->store()
function. So remove the bogus write permission to get rid of the
warning.
Signed-off-by: Srivatsa S. Bhat <srivatsa.bhat@linux.vnet.ibm.com>
Cc: Mauro Carvalho Chehab <mchehab@redhat.com>
Cc: <stable@vger.kernel.org> # 3.[89]
[ shorten commit message ]
Signed-off-by: Borislav Petkov <bp@suse.de>
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Those should be const ptr to a const string, fix them.
Signed-off-by: Borislav Petkov <bp@suse.de>
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git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-edac
Pull edac fixes from Mauro Carvalho Chehab:
"Two edac fixes:
- i7300_edac currently reports a wrong number of DIMMs when the
memory controller is in single channel mode
- on some Sandy Bridge machines, the EDAC driver bails out as one of
the PCI IDs used by the driver is hidden by BIOS. As the driver
uses it only to detect the type of memory, make it optional at the
driver"
* 'linux_next' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-edac:
edac: sb_edac.c should not require prescence of IMC_DDRIO device
i7300_edac: Fix memory detection in single mode
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The Sandy Bridge EDAC driver uses a register in the IMC_DDRIO CSR
space to determine the type of DIMMs (registered or unregistered).
But this device does not exist on some single socket Sandy Bridge
servers. While the type of DIMMs is nice to know, it is not essential
for this driver's other functions. So it seems harsh to have it
refuse to load at all when it cannot find this device.
Make the check for this device be optional. If it isn't present
just report the memory type as "MEM_UNKNOWN".
Signed-off-by: Tony Luck <tony.luck@intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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When the machine is on single mode, only branch 0 channel 0
is valid. However, the code is not honouring it:
[ 1952.639341] EDAC DEBUG: i7300_get_mc_regs: Memory controller operating on single mode
...
[ 1952.639351] EDAC DEBUG: i7300_init_csrows: AMB-present CH0 = 0x1:
[ 1952.639353] EDAC DEBUG: i7300_init_csrows: AMB-present CH1 = 0x0:
[ 1952.639355] EDAC DEBUG: i7300_init_csrows: AMB-present CH2 = 0x0:
[ 1952.639358] EDAC DEBUG: i7300_init_csrows: AMB-present CH3 = 0x0:
...
[ 1952.639360] EDAC DEBUG: decode_mtr: MTR0 CH0: DIMMs are Present (mtr)
[ 1952.639362] EDAC DEBUG: decode_mtr: WIDTH: x8
[ 1952.639363] EDAC DEBUG: decode_mtr: ELECTRICAL THROTTLING is enabled
[ 1952.639364] EDAC DEBUG: decode_mtr: NUMBANK: 4 bank(s)
[ 1952.639366] EDAC DEBUG: decode_mtr: NUMRANK: single
[ 1952.639367] EDAC DEBUG: decode_mtr: NUMROW: 16,384 - 14 rows
[ 1952.639368] EDAC DEBUG: decode_mtr: NUMCOL: 1,024 - 10 columns
[ 1952.639370] EDAC DEBUG: decode_mtr: SIZE: 512 MB
[ 1952.639371] EDAC DEBUG: decode_mtr: ECC code is 8-byte-over-32-byte SECDED+ code
[ 1952.639373] EDAC DEBUG: decode_mtr: Scrub algorithm for x8 is on enhanced mode
[ 1952.639374] EDAC DEBUG: decode_mtr: MTR0 CH1: DIMMs are Present (mtr)
[ 1952.639376] EDAC DEBUG: decode_mtr: WIDTH: x8
[ 1952.639377] EDAC DEBUG: decode_mtr: ELECTRICAL THROTTLING is enabled
[ 1952.639379] EDAC DEBUG: decode_mtr: NUMBANK: 4 bank(s)
[ 1952.639380] EDAC DEBUG: decode_mtr: NUMRANK: single
[ 1952.639381] EDAC DEBUG: decode_mtr: NUMROW: 16,384 - 14 rows
[ 1952.639383] EDAC DEBUG: decode_mtr: NUMCOL: 1,024 - 10 columns
[ 1952.639384] EDAC DEBUG: decode_mtr: SIZE: 512 MB
[ 1952.639385] EDAC DEBUG: decode_mtr: ECC code is 8-byte-over-32-byte SECDED+ code
[ 1952.639387] EDAC DEBUG: decode_mtr: Scrub algorithm for x8 is on enhanced mode
...
[ 1952.639449] EDAC DEBUG: print_dimm_size: channel 0 | channel 1 | channel 2 | channel 3 |
[ 1952.639451] EDAC DEBUG: print_dimm_size: -------------------------------------------------------------
[ 1952.639453] EDAC DEBUG: print_dimm_size: csrow/SLOT 0 512 MB | 512 MB | 0 MB | 0 MB |
[ 1952.639456] EDAC DEBUG: print_dimm_size: csrow/SLOT 1 0 MB | 0 MB | 0 MB | 0 MB |
[ 1952.639458] EDAC DEBUG: print_dimm_size: csrow/SLOT 2 0 MB | 0 MB | 0 MB | 0 MB |
[ 1952.639460] EDAC DEBUG: print_dimm_size: csrow/SLOT 3 0 MB | 0 MB | 0 MB | 0 MB |
[ 1952.639462] EDAC DEBUG: print_dimm_size: csrow/SLOT 4 0 MB | 0 MB | 0 MB | 0 MB |
[ 1952.639464] EDAC DEBUG: print_dimm_size: csrow/SLOT 5 0 MB | 0 MB | 0 MB | 0 MB |
[ 1952.639466] EDAC DEBUG: print_dimm_size: csrow/SLOT 6 0 MB | 0 MB | 0 MB | 0 MB |
[ 1952.639468] EDAC DEBUG: print_dimm_size: csrow/SLOT 7 0 MB | 0 MB | 0 MB | 0 MB |
[ 1952.639470] EDAC DEBUG: print_dimm_size: -------------------------------------------------------------
Instead of detecting a single memory at channel 0, it is showing
twice the memory.
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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Add code to handle DRAM ECC errors decoding for Fam16h.
Tested on Fam16h with ECC turned on using the mce_amd_inj facility and
works fine.
Signed-off-by: Aravind Gopalakrishnan <Aravind.Gopalakrishnan@amd.com>
[ Boris: cleanups and clarifications ]
Signed-off-by: Borislav Petkov <bp@suse.de>
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Both mci.mem_is_per_rank and mci.csbased denote the same thing: the
memory controller is csrows based. Merge both fields into one.
There's no need for the driver to actually fill it, as the core detects
it by checking if one of the layers has the csrows type as part of the
memory hierarchy:
if (layers[i].type == EDAC_MC_LAYER_CHIP_SELECT)
per_rank = true;
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
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We were filling the csrow size with a wrong value. 16a528ee3975 ("EDAC:
Fix csrow size reported in sysfs") tried to address the issue. It fixed
the report with the old API but not with the new one. Correct it for the
new API too.
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
[ make it a per-csrow accounting regardless of ->channel_count ]
Signed-off-by: Borislav Petkov <bp@suse.de>
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Fixes lots of sparse warnings here.
Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
Signed-off-by: Borislav Petkov <bp@suse.de>
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git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-edac
Pull EDAC fixes and ghes-edac from Mauro Carvalho Chehab:
"For:
- Some fixes at edac drivers (i7core_edac, sb_edac, i3200_edac);
- error injection support for i5100, when EDAC debug is enabled;
- fix edac when it is loaded builtin (early init for the subsystem);
- a "Firmware First" EDAC driver, allowing ghes to report errors via
EDAC (ghes-edac).
With regards to ghes-edac, this fixes a longstanding BZ at Red Hat
that happens with Nehalem and Sandy Bridge CPUs: when both GHES and
i7core_edac or sb_edac are running, the error reports are
unpredictable, as both BIOS and OS race to access the registers. With
ghes-edac, the EDAC core will refuse to register any other concurrent
memory error driver.
This patchset moves the ghes struct definitions to a separate header
file (include/acpi/ghes.h) and adds 3 hooks at apei/ghes.c to
register/unregister and to report errors via ghes-edac. Those changes
were acked by ghes driver maintainer (Huang)."
* 'linux_next' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-edac: (30 commits)
i5100_edac: convert to use simple_open()
ghes_edac: fix to use list_for_each_entry_safe() when delete list items
ghes_edac: Fix RAS tracing
ghes_edac: Make it compliant with UEFI spec 2.3.1
ghes_edac: Improve driver's printk messages
ghes_edac: Don't credit the same memory dimm twice
ghes_edac: do a better job of filling EDAC DIMM info
ghes_edac: add support for reporting errors via EDAC
ghes_edac: Register at EDAC core the BIOS report
ghes: add the needed hooks for EDAC error report
ghes: move structures/enum to a header file
edac: add support for error type "Info"
edac: add support for raw error reports
edac: reduce stack pressure by using a pre-allocated buffer
edac: lock module owner to avoid error report conflicts
edac: remove proc_name from mci structure
edac: add a new memory layer type
edac: initialize the core earlier
edac: better report error conditions in debug mode
i5100_edac: Remove two checkpatch warnings
...
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This removes an open coded simple_open() function and
replaces file operations references to the function
with simple_open() instead.
Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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Since we will remove items off the list using list_del() we need
to use a safe version of the list_for_each_entry() macro aptly named
list_for_each_entry_safe().
Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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With the current version of CPER, there's no way to associate an
error with the memory error. So, the error location in EDAC
layers is unused.
As CPER has its own idea about memory architectural layers, just
output whatever is there inside the driver's detail at the RAS
tracepoint.
The EDAC location keeps untouched, in the case that, in some future,
we could actually map the error into the dimm labels.
Now, the error message:
[ 72.396625] {1}[Hardware Error]: Hardware error from APEI Generic Hardware Error Source: 0
[ 72.396627] {1}[Hardware Error]: APEI generic hardware error status
[ 72.396628] {1}[Hardware Error]: severity: 2, corrected
[ 72.396630] {1}[Hardware Error]: section: 0, severity: 2, corrected
[ 72.396632] {1}[Hardware Error]: flags: 0x01
[ 72.396634] {1}[Hardware Error]: primary
[ 72.396635] {1}[Hardware Error]: section_type: memory error
[ 72.396637] {1}[Hardware Error]: error_status: 0x0000000000000400
[ 72.396638] {1}[Hardware Error]: node: 3
[ 72.396639] {1}[Hardware Error]: card: 0
[ 72.396640] {1}[Hardware Error]: module: 0
[ 72.396641] {1}[Hardware Error]: device: 0
[ 72.396643] {1}[Hardware Error]: error_type: 18, unknown
[ 72.396666] EDAC MC0: 1 CE reserved error (18) on unknown label (node:3 card:0 module:0 page:0x0 offset:0x0 grain:0 syndrome:0x0 - status(0x0000000000000400): Storage error in DRAM memory)
Is properly represented on the trace event:
kworker/0:2-584 [000] .... 72.396657: mc_event: 1 Corrected error: reserved error (18) on unknown label (mc:0 location:-1:-1:-1 address:0x00000000 grain:1 syndrome:0x00000000 APEI location: node:3 card:0 module:0 status(0x0000000000000400): Storage error in DRAM memory)
Tested on a 4 sockets E5-4650 Sandy Bridge machine.
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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The UEFI spec defines the memory error types ans the bits that
validate each field on the memory error record, at
Appendix N om items N.2.5 (Memory Error Section) and
N.2.11 (Error Status). Make the error description compliant with
it, only showing the valid fields.
The EDAC error log is now properly reporting the error:
[ 281.556854] mce: [Hardware Error]: Machine check events logged
[ 281.557042] {2}[Hardware Error]: Hardware error from APEI Generic Hardware Error Source: 0
[ 281.557044] {2}[Hardware Error]: APEI generic hardware error status
[ 281.557046] {2}[Hardware Error]: severity: 2, corrected
[ 281.557048] {2}[Hardware Error]: section: 0, severity: 2, corrected
[ 281.557050] {2}[Hardware Error]: flags: 0x01
[ 281.557052] {2}[Hardware Error]: primary
[ 281.557053] {2}[Hardware Error]: section_type: memory error
[ 281.557055] {2}[Hardware Error]: error_status: 0x0000000000000400
[ 281.557056] {2}[Hardware Error]: node: 3
[ 281.557057] {2}[Hardware Error]: card: 0
[ 281.557058] {2}[Hardware Error]: module: 1
[ 281.557059] {2}[Hardware Error]: device: 0
[ 281.557061] {2}[Hardware Error]: error_type: 18, unknown
[ 281.557067] EDAC DEBUG: ghes_edac_report_mem_error: error validation_bits: 0x000040b9
[ 281.557084] EDAC MC0: 1 CE reserved error (18) on unknown label (node:3 card:0 module:1 page:0x0 offset:0x0 grain:0 syndrome:0x0 - status(0x0000000000000400): Storage error in DRAM memory)
Tested on a 4 CPUs E5-4650 Sandy Bridge machine.
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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Provide a better infrastructure for printk's inside the driver:
- use edac_dbg() for debug messages;
- standardize the usage of pr_info();
- provide warning about the risk of relying on this
driver.
While here, changes the size of a fake memory to 1 page. This is
as good or as bad as 1000 pages, but it is easier for userspace to
detect, as I don't expect that any machine implementing GHES would
provide just 1 page available ;)
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Conflicts:
drivers/edac/ghes_edac.c
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On my tests on a 4xE5-4650 CPU's system, the GHES
EDAC driver is called twice. As the SMBIOS DMI enumeration
call will seek for the entire DIMM sockets in the system, on
this machine, equipped with 128 GB of RAM, the memory is
displayed twice:
+-----------------------+
| mc0 | mc1 |
----------+-----------------------+
memory45: | 8192 MB | 8192 MB |
memory44: | 0 MB | 0 MB |
----------+-----------------------+
memory43: | 0 MB | 0 MB |
memory42: | 8192 MB | 8192 MB |
----------+-----------------------+
memory41: | 0 MB | 0 MB |
memory40: | 0 MB | 0 MB |
----------+-----------------------+
memory39: | 8192 MB | 8192 MB |
memory38: | 0 MB | 0 MB |
----------+-----------------------+
memory37: | 0 MB | 0 MB |
memory36: | 8192 MB | 8192 MB |
----------+-----------------------+
memory35: | 0 MB | 0 MB |
memory34: | 0 MB | 0 MB |
----------+-----------------------+
memory33: | 8192 MB | 8192 MB |
memory32: | 0 MB | 0 MB |
----------+-----------------------+
memory31: | 0 MB | 0 MB |
memory30: | 8192 MB | 8192 MB |
----------+-----------------------+
memory29: | 0 MB | 0 MB |
memory28: | 0 MB | 0 MB |
----------+-----------------------+
memory27: | 8192 MB | 8192 MB |
memory26: | 0 MB | 0 MB |
----------+-----------------------+
memory25: | 0 MB | 0 MB |
memory24: | 8192 MB | 8192 MB |
----------+-----------------------+
memory23: | 0 MB | 0 MB |
memory22: | 0 MB | 0 MB |
----------+-----------------------+
memory21: | 8192 MB | 8192 MB |
memory20: | 0 MB | 0 MB |
----------+-----------------------+
memory19: | 0 MB | 0 MB |
memory18: | 8192 MB | 8192 MB |
----------+-----------------------+
memory17: | 0 MB | 0 MB |
memory16: | 0 MB | 0 MB |
----------+-----------------------+
memory15: | 8192 MB | 8192 MB |
memory14: | 0 MB | 0 MB |
----------+-----------------------+
memory13: | 0 MB | 0 MB |
memory12: | 8192 MB | 8192 MB |
----------+-----------------------+
memory11: | 0 MB | 0 MB |
memory10: | 0 MB | 0 MB |
----------+-----------------------+
memory9: | 8192 MB | 8192 MB |
memory8: | 0 MB | 0 MB |
----------+-----------------------+
memory7: | 0 MB | 0 MB |
memory6: | 8192 MB | 8192 MB |
----------+-----------------------+
memory5: | 0 MB | 0 MB |
memory4: | 0 MB | 0 MB |
----------+-----------------------+
memory3: | 8192 MB | 8192 MB |
memory2: | 0 MB | 0 MB |
----------+-----------------------+
memory1: | 0 MB | 0 MB |
memory0: | 8192 MB | 8192 MB |
----------+-----------------------+
Total sum of 256 GB.
As there's no reliable way to credit DIMMS to the right memory
controller, just put everything on memory controller 0 (with should
always exist).
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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Instead of just faking a random value for the DIMM data, get
the information that it is available via DMI table.
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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Now that the EDAC core is capable of just forward the errors via
the userspace API, add a report mechanism for the GHES errors.
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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Register GHES at EDAC MC core, in order to avoid other
drivers to also handle errors and mangle with error data.
The edac core will warrant that just one driver will be used,
so the first one to register (BIOS first) will be the one that
will be reporting the hardware errors.
For now, the EDAC driver does nothing but to register at the
EDAC core, preventing the hardware-driven mechanism to
interfere with GHES.
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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That allows APEI GHES driver to report errors directly, using
the EDAC error report API.
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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The number of variables at the stack is too big.
Reduces the stack usage by using a pre-allocated error
buffer.
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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APEI GHES and i7core_edac/sb_edac currently can be loaded at
the same time, but those are Highlander modules:
"There can be only one".
There are two reasons for that:
1) Each driver assumes that it is the only one registering at
the EDAC core, as it is driver's responsibility to number
the memory controllers, and all of them start from 0;
2) If BIOS is handling the memory errors, the OS can't also be
doing it, as one will mangle with the other.
So, we need to add an module owner's lock at the EDAC core,
in order to avoid having two different modules handling memory
errors at the same time. The best way for doing this lock seems
to use the driver's name, as this is unique, and won't require
changes on every driver.
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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There are some cases where the memory controller layout is
completely hidden. This is the case of firmware-driven error
code, like the one provided by GHES. Add a new layer to be
used on such memory error report mechanisms.
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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In order for it to work with it builtin, the EDAC core should
be initialized earlier, otherwise the ghes_edac driver initializes
before edac_mc_sysfs_init() being called:
...
[ 4.998373] EDAC MC0: Giving out device to 'ghes_edac.c' 'ghes_edac': DEV ghes
...
[ 4.998373] EDAC MC1: Giving out device to 'ghes_edac.c' 'ghes_edac': DEV ghes
[ 6.519495] EDAC MC: Ver: 3.0.0
[ 6.523749] EDAC DEBUG: edac_mc_sysfs_init: device mc created
The net result is that no EDAC sysfs nodes will appear.
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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It is hard to find what's wrong without a proper error
report. Improve it, in debug mode.
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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The last changeset introduced a few checkpatch warnings:
WARNING: debugfs_remove_recursive(NULL) is safe this check is probably not required
261: FILE: drivers/edac/i5100_edac.c:1207:
+ if (priv->debugfs)
+ debugfs_remove_recursive(priv->debugfs);
WARNING: debugfs_remove(NULL) is safe this check is probably not required
290: FILE: drivers/edac/i5100_edac.c:1250:
+ if (i5100_debugfs)
+ debugfs_remove(i5100_debugfs);
Get rid of them.
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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Create a debugfs direcotry i5100_edac/mcX for each memory controller and
add nodes to control how fault injection is preformed.
After configuring an injection using inject_channel, inject_deviceptr1,
inject_deviceptr2, inject_eccmask1, inject_eccmask2 and inject_hlinesel
trigger the injection by writing anything to inject_enable.
Example of a CE injection:
echo 0 > /sys/kernel/debug/i5100_edac/mc0/inject_channel
echo 1 > /sys/kernel/debug/i5100_edac/mc0/inject_hlinesel
echo 61440 > /sys/kernel/debug/i5100_edac/mc0/inject_eccmask1
echo 1 > /sys/kernel/debug/i5100_edac/mc0/inject_enable
Example of UE injection:
echo 0 > /sys/kernel/debug/i5100_edac/mc0/inject_channel
echo 2 > /sys/kernel/debug/i5100_edac/mc0/inject_hlinesel
echo 65535 > /sys/kernel/debug/i5100_edac/mc0/inject_eccmask1
echo 65535 > /sys/kernel/debug/i5100_edac/mc0/inject_eccmask2
echo 17 > /sys/kernel/debug/i5100_edac/mc0/inject_deviceptr1
echo 0 > /sys/kernel/debug/i5100_edac/mc0/inject_deviceptr2
echo 1 > /sys/kernel/debug/i5100_edac/mc0/inject_enable
Sometimes it is needed to enable the injection more then once (echo to
the inject_enable node) for the injection to happen, I am not sure why.
Signed-off-by: Niklas Söderlund <niklas.soderlund@ericsson.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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Add fault injection based on information datasheet for i5100, see 1. In
addition to the i5100 datasheet some missing information on injection
functions where found through experimentation and the i7300 datasheet,
see 2.
[1] Intel 5100 Memory Controller Hub Chipset
Doc.Nr: 318378
http://www.intel.com/content/dam/doc/datasheet/5100-
memory-controller-hub-chipset-datasheet.pdf
[2] Intel 7300 Chipset MemoryController Hub (MCH)
Doc.Nr: 318082
http://www.intel.com/assets/pdf/datasheet/318082.pdf
Signed-off-by: Niklas Söderlund <niklas.soderlund@ericsson.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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Probe and store the device handle for the device 19 function 0 during
driver initialization. The device is used during fault injection.
Signed-off-by: Niklas Söderlund <niklas.soderlund@ericsson.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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Currently, sdram_scrub_rate sysfs node is created even if the device
doesn't support get/set the scub rate. Change the logic to only
create this device node when the operation is supported.
Reported-by: Felipe Balbi <balbi@ti.com>
Acked-by: Borislav Petkov <bp@suse.de>
Reviewed-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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After running a series of tests on an HP DL320, filled with different
memory sizes, it was noticed that, when filled with just one DIMM
on such hardware, the driver wrongly detects twice the memory, and
thinks that both channels 0 and 1 are filled.
It seems to be partially caused by the BIOS and partially by the driver.
The i3200_edac current logic would be working fine if the BIOS were
disabling the unused second channel when just one DIMM is connected,
in order to do power-saving, as recommended on this chipset's datasheet.
However, the BIOS on this particular machine doesn't do it:
[ 16.741421] EDAC DEBUG: how_many_channels: In dual channel mode
[ 16.741424] EDAC DEBUG: how_many_channels: 2 DIMMS per channel enabled
So, the driver were assuming that 2 channels are enabled (well, they are,
but the second is unused).
Combined with that, I found two issues at the logic that creates the
EDAC data, that were failing when the two channels are not equally
filled (AFAICT, that happens only when just 1 DIMM is plugged).
The first one is that a 0 at DRB means that nothing is filled. The
driver's logic, however, do some calculation with that.
The second one is that the logic that fills the DIMM data currently
assumes that both channels are equally filled.
I tested the system already with the current configuration and my
patch and it is now working fine. So, for a 2R single DIMM 2Gb memory
at dimm slot 01 (channel 0), it is now displaying:
[ 16.741406] EDAC DEBUG: i3200_get_drbs: drb[0][0] = 16, drb[1][0] = 0
[ 16.741410] EDAC DEBUG: i3200_get_drbs: drb[0][1] = 32, drb[1][1] = 0
[ 16.741413] EDAC DEBUG: i3200_get_drbs: drb[0][2] = 32, drb[1][2] = 0
[ 16.741416] EDAC DEBUG: i3200_get_drbs: drb[0][3] = 32, drb[1][3] = 0
...
[ 16.741896] EDAC DEBUG: i3200_probe1: csrow 0, channel 0, size = 1024 Mb
[ 16.741899] EDAC DEBUG: i3200_probe1: csrow 1, channel 0, size = 1024 Mb
and the corresponding sysfs nodes are now properly filled.
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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Currently, it is not possible to know, when debug is enabled,
if the driver is using 2 DIMMS per channel mode or not. It is
not possible to know the values of the drbs registers, used
to identify the memory rank sizes.
Add debug for both, as it helps to track issues on the driver.
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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Linux 3.8-rc7
* tag 'v3.8-rc7': (12052 commits)
Linux 3.8-rc7
net: sctp: sctp_endpoint_free: zero out secret key data
net: sctp: sctp_setsockopt_auth_key: use kzfree instead of kfree
atm/iphase: rename fregt_t -> ffreg_t
ARM: 7641/1: memory: fix broken mmap by ensuring TASK_UNMAPPED_BASE is aligned
ARM: DMA mapping: fix bad atomic test
ARM: realview: ensure that we have sufficient IRQs available
ARM: GIC: fix GIC cpumask initialization
net: usb: fix regression from FLAG_NOARP code
l2tp: dont play with skb->truesize
net: sctp: sctp_auth_key_put: use kzfree instead of kfree
netback: correct netbk_tx_err to handle wrap around.
xen/netback: free already allocated memory on failure in xen_netbk_get_requests
xen/netback: don't leak pages on failure in xen_netbk_tx_check_gop.
xen/netback: shutdown the ring if it contains garbage.
drm/ttm: fix fence locking in ttm_buffer_object_transfer, 2nd try
virtio_console: Don't access uninitialized data.
net: qmi_wwan: add more Huawei devices, including E320
net: cdc_ncm: add another Huawei vendor specific device
ipv6/ip6_gre: fix error case handling in ip6gre_tunnel_xmit()
...
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It is easy to trigger this crash on 3.7.0:
root@intel_westmere_ep-3:~# modprobe -r i7core_edac
EDAC PCI: Removed device 0 for i7core_edac EDAC PCI controller: DEV 0000:fe:03.0
EDAC MC: Removed device 1 for i7core_edac.c i7 core #1: DEV 0000:fe:03.0
EDAC PCI: Removed device 1 for i7core_edac EDAC PCI controller: DEV 0000:ff:03.0
EDAC MC: Removed device 0 for i7core_edac.c i7 core #0: DEV 0000:ff:03.0
BUG: unable to handle kernel NULL pointer dereference at 0000000000000110
IP: [<ffffffff82069ee9>] __blocking_notifier_call_chain+0x29/0x80
PGD 1eaae7067 PUD 1e96e4067 PMD 0
Oops: 0000 [#1] PREEMPT SMP
Modules linked in: minix acpi_cpufreq freq_table mperf ioatdma processor edac_core(-) iTCO_wdt coretemp evdev hwmon lpc_ich dca mfd_core crc32c_intel ioapic [last unloaded: i7core_edac]
CPU 3
Pid: 1268, comm: modprobe Not tainted 3.7.0-WR5.0.1.0_standard+ #30 Intel Corporation S5520HC/S5520HC
RIP: 0010:[<ffffffff82069ee9>] [<ffffffff82069ee9>] __blocking_notifier_call_chain+0x29/0x80
RSP: 0018:ffff8801eb12de28 EFLAGS: 00010246
RAX: 0000000000000000 RBX: 00000000000000f0 RCX: 00000000ffffffff
RDX: ffff88012b452800 RSI: 0000000000000002 RDI: 00000000000000f0
RBP: ffff8801eb12de68 R08: 0000000000000000 R09: ffffea0004ad1118
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: ffff8801eb12dee8 R14: ffff88012b452800 R15: 000000000060e518
FS: 00007f9ea95a9700(0000) GS:ffff8801efc20000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b
CR2: 0000000000000110 CR3: 00000001262f1000 CR4: 00000000000007e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Process modprobe (pid: 1268, threadinfo ffff8801eb12c000, task ffff8801e8421690)
Stack:
ffff88012c802a00 ffff88012b445ec0 ffff88012c802300 ffff88012b452800
0000000000000000 ffff8801eb12dee8 000000000060e080 000000000060e518
ffff8801eb12de78 ffffffff82069f56 ffff8801eb12dea8 ffffffff824ead7c
Call Trace:
[<ffffffff82069f56>] blocking_notifier_call_chain+0x16/0x20
[<ffffffff824ead7c>] device_del+0x3c/0x1d0
[<ffffffffa00095a8>] edac_mc_sysfs_exit+0x1c/0x2f [edac_core]
[<ffffffffa000961c>] edac_exit+0x4f/0x56 [edac_core]
[<ffffffff820a3d2a>] sys_delete_module+0x17a/0x240
[<ffffffff8212da7c>] ? vm_munmap+0x5c/0x80
[<ffffffff82877682>] system_call_fastpath+0x16/0x1b
Code: 90 90 55 48 89 e5 48 83 ec 40 48 89 5d d8 4c 89 65 e0 4c 89 6d e8 4c 89 75 f0 4c 89 7d f8 66 66 66 66 90 31 c0 49 89 d6 48 89 fb <48> 8b 57 20 49 89 f5 41 89 cf 4c 8d 67 20 48 85 d2 74 2c 4c 89
RIP [<ffffffff82069ee9>] __blocking_notifier_call_chain+0x29/0x80
RSP <ffff8801eb12de28>
CR2: 0000000000000110
---[ end trace b69acf12ccad1c0d ]---
Usually, edac_subsys is grabbed one time by pci at initialization.
But edac_subsys may be released several times if multiple pci MCs exist.
The fix just makes the operations balanced.
Signed-off-by: Lans Zhang <jia.zhang@windriver.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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Remove size from lookup arrays and mark them as const.
Reviewed-by: Jesper Juhl <jj@chaosbits.net>
Signed-off-by: Niklas Söderlund <niso@kth.se>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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[ 17.024963] EDAC DEBUG: get_memory_layout: TOHM: 132.160 GB (0x0000002043ffffff)<7>[ 17.024971] EDAC DEBUG: get_memory_layout: SAD#0 DRAM up to 33.792 GB (0x0000000840000000) Interleave: 8:6 reg=0x000083c3
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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There are no more embedded kobjects in struct mem_ctl_info. Remove a header and
a comment that does not reflect the code anymore.
Signed-off-by: Shaun Ruffell <sruffell@digium.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core
Pull driver core patches from Greg Kroah-Hartman:
"Here is the big driver core merge for 3.9-rc1
There are two major series here, both of which touch lots of drivers
all over the kernel, and will cause you some merge conflicts:
- add a new function called devm_ioremap_resource() to properly be
able to check return values.
- remove CONFIG_EXPERIMENTAL
Other than those patches, there's not much here, some minor fixes and
updates"
Fix up trivial conflicts
* tag 'driver-core-3.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (221 commits)
base: memory: fix soft/hard_offline_page permissions
drivercore: Fix ordering between deferred_probe and exiting initcalls
backlight: fix class_find_device() arguments
TTY: mark tty_get_device call with the proper const values
driver-core: constify data for class_find_device()
firmware: Ignore abort check when no user-helper is used
firmware: Reduce ifdef CONFIG_FW_LOADER_USER_HELPER
firmware: Make user-mode helper optional
firmware: Refactoring for splitting user-mode helper code
Driver core: treat unregistered bus_types as having no devices
watchdog: Convert to devm_ioremap_resource()
thermal: Convert to devm_ioremap_resource()
spi: Convert to devm_ioremap_resource()
power: Convert to devm_ioremap_resource()
mtd: Convert to devm_ioremap_resource()
mmc: Convert to devm_ioremap_resource()
mfd: Convert to devm_ioremap_resource()
media: Convert to devm_ioremap_resource()
iommu: Convert to devm_ioremap_resource()
drm: Convert to devm_ioremap_resource()
...
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The CONFIG_EXPERIMENTAL config item has not carried much meaning for a
while now and is almost always enabled by default. As agreed during the
Linux kernel summit, remove it from any "depends on" lines in Kconfigs.
Acked-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Pull EDAC updates from Borislav Petkov:
"Mostly AMD's side of EDAC. It is basically a new family enablement
stuff: AMD F16h MCE decoding enablement from Jacob Shin. The rest is
trivial cleanups."
* tag 'edac_3.9' of git://git.kernel.org/pub/scm/linux/kernel/git/bp/bp:
mpc85xx_edac: Fix typo
EDAC, MCE, AMD: Remove unneeded exports
EDAC, MCE, AMD: Add MCE decoding support for Family 16h
EDAC, MCE, AMD: Make MC2 decoding per-family
amd64_edac: Remove dead code
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Correct typos.
Signed-off-by: Baruch Siach <baruch@tkos.co.il>
Cc: Dave Jiang <djiang@mvista.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
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Initially, those strings describing different parts of an MCE message
were shared with amd64_edac and were therefore exported to modules.
However, all except pp_msgs are used only in one place right now so hide
them and make them static.
No functionality change.
Reported-by: Fengguang Wu <fengguang.wu@intel.com>
Signed-off-by: Borislav Petkov <bp@alien8.de>
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