[PATCH] i386: i386 add X86_FEATURE_PEBS and detection
Here is a patch (used by perfmon2) to detect the presence of the Precise Event
Based Sampling (PEBS) feature for i386. The patch also adds the cpu_has_pebs
macro.
[PATCH] i386: i386 rename X86_FEATURE_DTES to X86_FEATURE_DS
Here is a patch (used by perfmon2) that renames X86_FEATURE_DTES to
X86_FEATURE_DS to match Intel's documentation for the Debug Store save area on
i386. The patch also adds cpu_has_ds.
- rename X86_FEATURE_DTES to X86_FEATURE_DS to match documentation
[PATCH] x86-64: add X86_FEATURE_PEBS and detection
Here is a patch (used by perfmon2) to detect the presence of the
Precise Event Based Sampling (PEBS) feature for Intel 64-bit processors.
The patch also adds the cpu_has_pebs macro.
changelog:
- adds X86_FEATURE_PEBS
- adds cpu_has_pebs to test for X86_FEATURE_PEBS
[PATCH] x86-64: x86_64 rename X86_FEATURE_DTES to X86_FEATURE_DS
Here is a patch (used by perfmon2) that renamed X86_FEATURE_DTES
to X86_FEATURE_DS to match Intel's documentation for the Debug Store
save area. The patch also adds cpu_has_ds.
changelog:
- rename X86_FEATURE_DTES to X86_FEATURE_DS to match documentation
- adds cpu_has_ds to test for X86_FEATURE_DS
Dave Jones [Thu, 7 Dec 2006 01:14:00 +0000 (02:14 +0100)]
[PATCH] i386: remove pointless printk from i386 oops output
This just got removed on x86-64, do the same on 32bit.
It always annoyed me when this ate a line of oops output pushing
interesting stuff off the screen.
Signed-off-by: Dave Jones <davej@redhat.com> Signed-off-by: Andi Kleen <ak@suse.de>
Andi Kleen [Thu, 7 Dec 2006 01:14:00 +0000 (02:14 +0100)]
[PATCH] x86: Compress stack unwinder output
The unwinder has some extra newlines, which eat up loads of screen
space when it spews. (See https://bugzilla.redhat.com/bugzilla/attachment.cgi?id=137900
for a nasty example).
warning_symbol-> and warning-> already printk a newline, so don't add one
in the strings passed to them.
[AK: redone for new code]
Signed-off-by: Dave Jones <davej@redhat.com> Signed-off-by: Andi Kleen <ak@suse.de>
Andreas Mohr [Thu, 7 Dec 2006 01:14:00 +0000 (02:14 +0100)]
[PATCH] i386: fix buggy MTRR address checks
Fix checks that failed to realize that values are 4-kB-unit-sized (note the
format strings in this same diff context which *do* realize the unit size,
via appended "000"!). Also fix an incorrect below-1MB area check (as
gathered from Jan Beulich's unapplied patch at
http://www.ussg.iu.edu/hypermail/linux/kernel/0411.1/1378.html ) Update
mtrr_add_page() docu to make 4-kB-sized calculation more obvious.
Given several further items mentioned in Jan's patch mail, all in all MTRR
code seems surprisingly buggy, for a surprisingly long period of time (many
years). Further work/investigation would be useful.
TBD Note that my patch is pretty much UNTESTED, since I can only verify that it
TBD successfully boots my machine, but I cannot test against actual buggy
TBD hardware which would require these (formerly broken) checks. Long -mm
TBD simmering would make sense, especially since these now-working checks might
TBD turn out to have adverse effects on unaffected hardware.
Signed-off-by: Andreas Mohr <andi@lisas.de> Signed-off-by: Andi Kleen <ak@suse.de> Acked-by: Jan Beulich <jbeulich@novell.com> Cc: Andi Kleen <ak@muc.de> Signed-off-by: Andrew Morton <akpm@osdl.org>
Ed Lin [Tue, 5 Dec 2006 01:49:42 +0000 (17:49 -0800)]
[SCSI] stex: change wait loop code
The original wait loop may be much longer than intended time.
Use more accurate timer_after for it. Also adjust wait value to
avoid unnecessary long waiting.
Signed-off-by: Ed Lin <ed.lin@promise.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Ed Lin [Tue, 5 Dec 2006 01:49:36 +0000 (17:49 -0800)]
[SCSI] stex: update device id info
- add comments for various devices
- remove unused device ids(0xf350, 0x4301, 0x8301, 0x8302)
- add new device id(0xe350)
- fix vendor id of st_vsc
- modify Kconfig help info
Signed-off-by: Ed Lin <ed.lin@promise.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Jeff Garzik [Mon, 4 Dec 2006 01:49:23 +0000 (20:49 -0500)]
[SCSI] megaraid: fix MMIO casts
megaraid's MMIO RD*/WR* macros directly call readl() and writel() with
an 'unsigned long' argument. This throws a warning, but is otherwise OK
because the 'unsigned long' is really the result of ioremap(). This
setup is also OK because the variable can hold an ioremap cookie /or/ a
PCI I/O port (PIO).
However, to fix the warning thrown when readl() and writel() are passed
an unsigned long cookie, I introduce 'void __iomem *mmio_base', holding
the same value as 'base'. This will silence the warnings, and also
cause an oops whenever these MMIO-only functions are ever accidentally
passed an I/O address.
Signed-off-by: Jeff Garzik <jeff@garzik.org> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
akpm@osdl.org [Tue, 5 Dec 2006 07:06:48 +0000 (23:06 -0800)]
[SCSI] tgt: fix undefined flush_dcache_page() problem
drivers/scsi/scsi_tgt_if.c: In function 'tgt_uspace_send_event':
drivers/scsi/scsi_tgt_if.c:88: warning: implicit declaration of function 'flush_dcache_page'
Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Matthew Wilcox [Mon, 4 Dec 2006 10:38:31 +0000 (03:38 -0700)]
[PATCH] Centralise definitions of sector_t and blkcnt_t
CONFIG_LBD and CONFIG_LSF are spread into asm/types.h for no particularly
good reason.
Centralising the definition in linux/types.h means that arch maintainers
don't need to bother adding it, as well as fixing the problem with
x86-64 users being asked to make a decision that has absolutely no
effect.
The H8/300 porters seem particularly confused since I'm not aware of any
microcontrollers that need to support 2TB filesystems.
Signed-off-by: Matthew Wilcox <matthew@wil.cx> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Al Viro [Mon, 4 Dec 2006 22:05:09 +0000 (22:05 +0000)]
[PATCH] remote memory corruptor in ibmtr.c
ip_summed changes last summer had missed that one. As the result,
we have ip_summed interpreted as CHECKSUM_PARTIAL now. IOW,
->csum is interpreted as offset of checksum in the packet. net/core/*
will both read and modify the value as that offset, with obvious
reasons. At the very least it's a remote memory corruptor.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* master.kernel.org:/pub/scm/linux/kernel/git/paulus/powerpc: (194 commits)
[POWERPC] Add missing EXPORTS for mpc52xx support
[POWERPC] Remove obsolete PPC_52xx and update CLASSIC32 comment
[POWERPC] ps3: add a default zImage target
[POWERPC] Add of_platform_bus support to mpc52xx psc uart driver
[POWERPC] typo fix and whitespace cleanup on mpc52xx-uart driver
[POWERPC] Fix debug printks for 32-bit resources in the PCI code
[POWERPC] Replace kmalloc+memset with kzalloc
[POWERPC] Linkstation / kurobox support
[POWERPC] Add the e300c3 core to the CPU table.
[POWERPC] ppc: m48t35 add missing bracket
[POWERPC] iSeries: don't build head_64.o unnecessarily
[POWERPC] iSeries: stop dt_mod.o being rebuilt unnecessarily
[POWERPC] Fix cputable.h for combined build
[POWERPC] Allow CONFIG_BOOTX_TEXT on iSeries
[POWERPC] Allow xmon to build on legacy iSeries
[POWERPC] Change ppc64_defconfig to use AUTOFS_V4 not V3
[POWERPC] Tell firmware we can handle POWER6 compatible mode
[POWERPC] Clean images in arch/powerpc/boot
[POWERPC] Fix OF pci flags parsing
[POWERPC] defconfig for lite5200 board
...
Andrew Victor [Mon, 4 Dec 2006 10:26:36 +0000 (12:26 +0200)]
[PATCH] pcmcia: at91_cf update
This is an update to the AT91 CompactFlash driver.
We replace the hard-coded "chip select 4" with the chip-select value
passed via platform_data. The configuration of the EBI memory
controller to enable Compact Flash access is now also handled in the
platform setup code and not in the driver.
Signed-off-by: Andrew Victor <andrew@sanpeople.com> Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
Andrew Victor [Mon, 6 Nov 2006 13:56:07 +0000 (15:56 +0200)]
[PATCH] pcmcia: at91_cf update
This is an update to the AT91RM9200 CompactFlash driver.
The changes include:
- Use the I/O memory address passed via the platform_device resources
instead of constant global values.
- The IRQ should not be used as a random'ness source.
- Return errors if ioremap() or request_mem_region() fails.
Signed-off-by: Andrew Victor <andrew@sanpeople.com> Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
[PATCH] pcmcia: conf.ConfigBase and conf.Present consolidation
struct pcmcia_device *p_dev->conf.ConfigBase and .Present are set in almost
all PCMICA driver right at the beginning, using the same calls but slightly
different implementations. Unfiy this in the PCMCIA core.
Includes a small bugfix ("drivers/net/pcmcia/xirc2ps_cs.c: remove unused
label") from and Signed-off-by Adrian Bunk <bunk@stusta.de>
As we read out the product information strings (VERS_1) from the PCMCIA device
in the PCMCIA core, and device drivers can access those reliably in struct
pcmcia_device's fields prod_id[], remove additional product information string
detection logic from PCMCIA device drivers.
[PATCH] pcmcia: remove manf_id and card_id indirection
As we read out the manufactor and card_id from the PCMCIA device in the
PCMCIA core, and device drivers can access those reliably in struct
pcmcia_device's fields manf_id and card_id, remove additional (and partly
broken) manf_id and card_id detection logic from PCMCIA device drivers.
Tony Olech [Wed, 29 Nov 2006 08:54:51 +0000 (08:54 +0000)]
[PATCH] pcmcia: IDs for Elan serial PCMCIA devcies
Add IDs for Elan serial PCMCIA devices. In addition, move the
pdaudio_cf driver from matching based on manf_id and card_id to
the more specific prod_id1 and prod_id2 to avoid false
positives.
Signed-off-by: Tony Olech <tony.olech@elandigitalsystems.com> Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
s->functions needs to be initialized earlier, for the "let's see
how high it increases" approach means that pcmcia_request_irq()
(which makes use of this value) is confused, and might request
an exclusive IRQ first even though it is not supposed to.
Also, a CIS override autoloaded using the firmware loader may
allow for the use of more or less functions in a multifunction
card. Therefore, we may need to schedule a call to add this
second function later on, or simply remove the other function
(it's always the first -valid- function which reaches this
codepath).
Many thanks to Fabrice Bellet for debugging and testing patches.
Akinobu Mita [Tue, 17 Oct 2006 06:25:59 +0000 (15:25 +0900)]
[PATCH] cm4000_cs: fix return value check
The return value of class_create() need to be checked with IS_ERR().
And register_chrdev() returns errno on failure.
This patch includes these fixes for cm4000_cs and cm4040_cs.
Signed-off-by: Akinbou Mita <akinobu.mita@gmail.com> Signed-off-by: Harald Welte <laforge@gnumonks.org> Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
Grant Likely [Mon, 27 Nov 2006 21:21:02 +0000 (14:21 -0700)]
[POWERPC] Add of_platform_bus support to mpc52xx psc uart driver
Needed to support mpc52xx boards in arch/powerpc. This patch
retains the platform_bus support when compiling for arch/ppc,
but uses the of_platform bindings for arch/powerpc.
Signed-off-by: Grant Likely <grant.likely@secretlab.ca> Signed-off-by: Sylvain Munaut <tnt@246tNt.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
Grant Likely [Mon, 27 Nov 2006 21:21:01 +0000 (14:21 -0700)]
[POWERPC] typo fix and whitespace cleanup on mpc52xx-uart driver
Single typo fix and whitespace changes. In preparation for heavy
changes to this driver when support for arch/powerpc is added.
Since the driver will be changing significantly anyway, then may
as well take the opportunity to clean it up first.
Signed-off-by: Grant Likely <grant.likely@secretlab.ca> Signed-off-by: Sylvain Munaut <tnt@246tNt.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
Atsushi Nemoto [Sun, 3 Dec 2006 15:42:59 +0000 (00:42 +0900)]
[MIPS] Unify csum_partial.S
The 32-bit version and 64-bit version are almost equal. Unify them. This
makes further improvements (for example, copying with parallel, supporting
PREFETCH, etc.) easier.
Ralf Baechle [Thu, 30 Nov 2006 15:38:10 +0000 (15:38 +0000)]
[MIPS] Fix atomic.h build errors.
For the definition of atomic64_t atomic.h was relying on <asm/types.h>
having been included previously. Before changeset d89d8e0637a5e4e0a12e90c4bc934d0d4c335239 this was happening as a
side effect of including <linux/spinlock.h>.
Atsushi Nemoto [Tue, 7 Nov 2006 09:02:44 +0000 (18:02 +0900)]
[MIPS] Use SYSVIPC_COMPAT to fix various problems on N32
N32 SysV IPC system calls should use 32-bit compatible code.
arch/mips/kernel/linux32.c have similar compatible code for O32, but
ipc/compat.c seems more complete. We can use it for both N32 and O32.
This patch should fix these problems (and other possible problems):
Linus Torvalds [Mon, 4 Dec 2006 21:12:29 +0000 (13:12 -0800)]
Merge branch 'upstream-linus' of master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/libata-dev
* 'upstream-linus' of master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/libata-dev: (82 commits)
[PATCH] pata_ali: small fixes
[PATCH] pata_via: VIA 8251 bridged systems are now out and about
[PATCH] trivial piix: swap bogus dot for comma space
[PATCH] sata_promise: PHYMODE4 fixup
[PATCH] libata: always use polling IDENTIFY
[libata] pata_cs5535: fix build
[PATCH] ahci: do not powerdown during initialization
[PATCH] libata: prepare ata_sg_clean() for invocation from EH
[PATCH] libata: separate out rw ATA taskfile building into ata_build_rw_tf()
[PATCH] libata: implement ata_exec_internal_sg()
[PATCH] libata: make sure IRQ is cleared after ata_bmdma_freeze()
[PATCH] libata: move BMDMA host status recording from EH to interrupt handler
[PATCH] libata: make sure sdev doesn't go away while rescanning
[PATCH] libata: don't request sense if the port is frozen
[PATCH] libata: fix READ CAPACITY simulation
[PATCH] libata: implement ATA_FLAG_SETXFER_POLLING and use it in pata_via, take #2
[PATCH] libata: set IRQF_SHARED for legacy PCI IDE IRQs
[PATCH] libata: remove unused HSM_ST_UNKNOWN
[PATCH] libata: kill unnecessary sht->max_sectors initializations
[PATCH] libata: add missing sht->slave_destroy
...
Alan [Mon, 4 Dec 2006 16:36:05 +0000 (16:36 +0000)]
[PATCH] pata_ali: small fixes
Switch to pci_get_bus_and_slot because some x86 systems seem to be
handing us a device with dev->bus = NULL. Also don't apply the isa fixup
to revision C6 and later of the chip.
Really we need to work out wtf is handing us pdev->bus = NULL, but firstly
and more importantly we need the drivers working.
Signed-off-by: Alan Cox <alan@redhat.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
* master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6:
[SUNHME]: Fix for sunhme failures on x86
[XFRM] xfrm_user: Better validation of user templates.
[DCCP] tfrc: Binary search for reverse TFRC lookup
[DCCP] ccid3: Deprecate TFRC_SMALLEST_P
[DCCP] tfrc: Identify TFRC table limits and simplify code
[DCCP] tfrc: Add protection against invalid parameters to TFRC routines
[DCCP] tfrc: Fix small error in reverse lookup of p for given f(p)
[DCCP] tfrc: Document boundaries and limits of the TFRC lookup table
[DCCP] ccid3: Fix warning message about illegal ACK
[DCCP] ccid3: Fix bug in calculation of send rate
[DCCP]: Fix BUG in retransmission delay calculation
[DCCP]: Use higher RTO default for CCID3
Linus Torvalds [Mon, 4 Dec 2006 16:29:45 +0000 (08:29 -0800)]
Merge branch 'for-linus' of git://git390.osdl.marist.edu/pub/scm/linux-2.6
* 'for-linus' of git://git390.osdl.marist.edu/pub/scm/linux-2.6: (34 commits)
[S390] Don't use small stacks when lockdep is used.
[S390] cio: Use device_reprobe() instead of bus_rescan_devices().
[S390] cio: Retry internal operations after vary off.
[S390] cio: Use path verification for last path gone after vary off.
[S390] non-unique constant/macro identifiers.
[S390] Memory detection fixes.
[S390] cio: Make ccw_dev_id_is_equal() more robust.
[S390] Convert extmem spin_lock into a mutex.
[S390] set KBUILD_IMAGE.
[S390] lockdep: show held locks when showing a stackdump
[S390] Add dynamic size check for usercopy functions.
[S390] Use diag260 for memory size detection.
[S390] pfault code cleanup.
[S390] Cleanup memory_chunk array usage.
[S390] Misaligned wait PSW at memory detection.
[S390] cpu shutdown rework
[S390] cpcmd <-> __cpcmd calling issues
[S390] Bad kexec control page allocation.
[S390] Reset infrastructure for re-IPL.
[S390] Some documentation typos.
...
David Wu [Mon, 4 Dec 2006 07:27:22 +0000 (17:27 +1000)]
[PATCH] m68knommu: add SHM support
It turns out SHMAT, SHMDT, SHMGET and SHMCTL support in sys_ipc() for
m68knommu in 2.6 kernel(uClinux-dist-20060803 release) is missing.
(copied from m68k sources, report by David Wu <davidwu@arcturusnetworks.com>)
Adrian Bunk [Mon, 4 Dec 2006 07:26:44 +0000 (17:26 +1000)]
[PATCH] m68knommu: fix compile when CONFIG_BLK_DEV_INITRD=n
This patch fixes the following compile error with
CONFIG_BLK_DEV_INITRD=n and -Werror-implicit-function-declaration:
...
CC arch/m68knommu/kernel/setup.o
/home/bunk/linux/kernel-2.6/linux-2.6.18-rc5-mm1/arch/m68knommu/kernel/setup.c: In function 'setup_arch':
/home/bunk/linux/kernel-2.6/linux-2.6.18-rc5-mm1/arch/m68knommu/kernel/setup.c:268: error: implicit declaration of function 'paging_init'
make[2]: *** [arch/m68knommu/kernel/setup.o] Error 1
Heiko Carstens [Mon, 4 Dec 2006 14:41:10 +0000 (15:41 +0100)]
[S390] Don't use small stacks when lockdep is used.
The lock dependency validator adds a bunch of extra stack frames to
the stack, which can cause stack overflows. Especially seen on 31 bit
where the small stack is only 4k.
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cornelia Huck [Mon, 4 Dec 2006 14:41:01 +0000 (15:41 +0100)]
[S390] cio: Use path verification for last path gone after vary off.
If the last path to a device is gone after a chpid has been varied
off, putting it on the slow queue doesn't prevent a device driver
from still attempting to use it (it may stay on the slow queue for a
long time). Instead, trigger a verify event which will prevent I/O
attempts from the device driver immediately.
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Ursula Braun [Mon, 4 Dec 2006 14:40:59 +0000 (15:40 +0100)]
[S390] non-unique constant/macro identifiers.
Add some prefixes to constands defined in drivers/s390/net/qdio.h
and drivers/s390/lcs.h to make it possible to include the three
header files drivers/s390/net/qeth.h, drivers/s390/net/qdio.h and
drivers/net/s390/lcs.h in one C file. This is required for the
patch that generates the kerntypes.o file for use by lcrash.
Signed-off-by: Ursula Braun <braunu@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Heiko Carstens [Mon, 4 Dec 2006 14:40:56 +0000 (15:40 +0100)]
[S390] Memory detection fixes.
VMALLOC_END on 31bit should be 0x8000000UL instead of 0x7fffffffL.
The page mask which is used to make sure memory_end is on 4MB/2MB
boundary is wrong and not needed. Therefore remove it.
Make sure a vmalloc area does also exist and work on (future)
machines with 4TB and more memory.
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cornelia Huck [Mon, 4 Dec 2006 14:40:54 +0000 (15:40 +0100)]
[S390] cio: Make ccw_dev_id_is_equal() more robust.
Using memcmp to compare ccw_dev_id implies that the whole structure (incl.
padding) has always been completely initialized to sane values. Comparing
the structures field by field doesn't make such assumptions.
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Heiko Carstens [Mon, 4 Dec 2006 14:40:47 +0000 (15:40 +0100)]
[S390] lockdep: show held locks when showing a stackdump
Follow i386/x86_64:
lockdep can be used to print held locks when printing a
backtrace. This can be useful when debugging things like
'scheduling while atomic' asserts.
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Gerald Schaefer [Mon, 4 Dec 2006 14:40:45 +0000 (15:40 +0100)]
[S390] Add dynamic size check for usercopy functions.
Use a wrapper for copy_to/from_user to chose the best usercopy method.
The mvcos instruction is better for sizes greater than 256 bytes, if
mvcos is not available a page table walk is better for sizes greater
than 1024 bytes. Also removed the redundant copy_to/from_user_std_small
functions.
Signed-off-by: Gerald Schaefer <geraldsc@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Heiko Carstens [Mon, 4 Dec 2006 14:40:42 +0000 (15:40 +0100)]
[S390] Use diag260 for memory size detection.
Avoid the tprot loop if diag260 works and reports that there are no
holes in memory. The tprot instruction can lead to a significant delay
in the ipl process if the virtual guest has a lot of memory and the
host is under memory pressure.
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Heiko Carstens [Mon, 4 Dec 2006 14:40:36 +0000 (15:40 +0100)]
[S390] Misaligned wait PSW at memory detection.
If the memory detection code would ever reach the point where it would
load the wait psw, it would generate a specification exception and the
system would crash at ipl time. This is because of a misaligned wait
psw. It needs to be on a double word boundary instead of a word
boundary.
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Heiko Carstens [Mon, 4 Dec 2006 14:40:33 +0000 (15:40 +0100)]
[S390] cpu shutdown rework
Let one master cpu kill all other cpus instead of sending an external
interrupt to all other cpus so they can kill themselves.
Simplifies reipl/shutdown functions a lot.
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Heiko Carstens [Mon, 4 Dec 2006 14:40:30 +0000 (15:40 +0100)]
[S390] cpcmd <-> __cpcmd calling issues
In case of reipl cpcmd gets called when all other cpus are not running
anymore. To prevent deadlocks change __cpcmd so that it doesn't take
any locks and call cpcmd or __cpcmd, whatever is correct in the current
context.
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Heiko Carstens [Mon, 4 Dec 2006 14:40:28 +0000 (15:40 +0100)]
[S390] Bad kexec control page allocation.
KEXEC_CONTROL_MEMORY_LIMIT is an unsigned long value and therefore
should be defined as one. Otherwise the kexec control page can be
allocated above 2GB which will cause a specification exception on the
sam31 instruction in the s390 kexec relocation code.
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
projects / linux-2.6 / log