reserve early numa kva, so it will not clash with new RAMDISK
Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
introduce init_pg_table_start, so xen PV could specify the value.
Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
AD7877 use SSEL_2 (P9.9) and IRQ_PF8 (P9.14) on BF527
- populating JP3 to enable STAMP
- disable SW11.2 to disconnect SSEL_2/PF12 from Rotary NAND
- disable SW18.1 to disconnect SSEL_2 from MAX1233 touchscreen chip
Signed-off-by: Bryan Wu <cooloney@kernel.org>
The node for DMA2 in the MPC8610 HPCD device tree has the wrong compatible
properties. This breaks the DMA driver and the sound driver.
Signed-off-by: Timur Tabi <timur@freescale.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Currently ext4 and fuse fail to link if modular:
ERROR: "copy_page" [fs/fuse/fuse.ko] undefined!
ERROR: "empty_zero_page" [fs/ext4/ext4dev.ko] undefined!
make[3]: *** [__modpost] Error 1
make[2]: *** [modules] Error 2
make[1]: *** [sub-make] Error 2
While arch ppc exists it may as well compile, so this exports those
symbols (which are already exported in arch/powerpc).
Signed-off-by: Tony Breeds <tony@bakeyournoodle.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
This patch lets the early real mode code look for the 'quiet' option
on the kernel command line and pass a loadflag to the decompressor.
When this flag is set, we suppress the "Decompressing Linux... Parsing
ELF... done." messages.
Signed-off-by: Kristian Høgsberg <krh@redhat.com>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Replace hardcoded offsets embedded in macros in
arch/x86/boot/compressed with proper structure references.
Signed-off-by: Kristian Høgsberg <krh@redhat.com>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Create a separate centaur_64.c file in the cpu/ dir for
the useful parts to live in.
Signed-off-by: Dave Jones <davej@redhat.com>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Create a separate intel_64.c file in the cpu/ dir for
the useful parts to live in.
Signed-off-by: Dave Jones <davej@redhat.com>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Create a separate amd_64.c file in the cpu/ dir for
the useful parts to live in.
Signed-off-by: Dave Jones <davej@redhat.com>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
arch/x86/kernel/mmconf-fam10h_64.c is missing the prototypes, which
are decalred in arch/x86/kernel/setup_64.c. Move the prototypes and
the inline stubs to the appropriate header file.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
* git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-for-linus:
lguest: notify on empty
virtio: force callback on empty.
virtio_blk: fix endianess annotations
virtio_config: fix len calculation of config elements
virtio_net: another race with virtio_net and enable_cb
virtio: An entropy device, as suggested by hpa.
virtio_blk: allow read-only disks
lguest: fix ugly <NULL> in /proc/interrupts
virtio: set device index in common code.
virtio: virtio_pci should not set bus_id.
virtio: bus_id for devices should contain 'virtio'
Fix crash in virtio_blk during modprobe ; rmmod ; modprobe
lguest: use ioremap_cache, not ioremap
This gets rid of two static variables (one of them being __initdata)
and a static function.
Signed-off-by: Uwe Kleine-König <Uwe.Kleine-Koenig@digi.com>
Acked-by: Uli Luckas <u.luckas@road.de>
atags.c was the only user of KEXEC_BOOT_PARAMS_SIZE and kexec.h
was only included to get that definition.
Signed-off-by: Uwe Kleine-König <Uwe.Kleine-Koenig@digi.com>
Acked-by: Uli Luckas <u.luckas@road.de>
The correct instruction format of idte is "idte r1,r3,r2" with
r1 at bit 24, r3 at bit 16 and r2 at bit 28.
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Convert show_mem() so its nearly the same as on x86/powerpc.
Gives us proper locking and we get also rid of the only use of max_mapnr.
Also the number of pages was contained in an int which might not be
sufficient not too far in the future.
Cc: Johannes Weiner <hannes@saeurebad.de>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Use get_online_cpus() to prevent cpu hotplug in situations where
for_each_online_cpu() is called.
Signed-off-by: Gerald Schaefer <gerald.schaefer@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
This fixes the last remaining section mismatch warnings in s390
architecture code. It reveals also a real bug introduced by... me
with git commit 2069e978d5
("[S390] sparsemem vmemmap: initialize memmap.")
Calling the generic vmemmap_alloc_block() function to get initialized
memory is a nice idea, however that function is __meminit annotated
and therefore the function might be gone if we try to call it later.
This can happen if a DCSS segment gets added.
So basically revert the patch and clear the memmap explicitly to fix
the original bug.
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
On s390 make allnoconfig fails with the following build error:
arch/s390/mm/init.c: In function 'show_mem':
arch/s390/mm/init.c:55: error: implicit declaration of function 'pfn_valid'
make[1]: *** [arch/s390/mm/init.o] Error 1
make: *** [arch/s390/mm] Error 2
This problem can by fixed ensuring that ARCH_SELECT_MEMORY_MODEL
is always turned on.
Signed-off-by: Hans-Joachim Picht <hans@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
With the recent DCR code rework, we get a compiler warning about
find_dcr_parent being defined but not used. This fixes it by only defining
the function if CONFIG_PPC_DCR_MMIO is set.
Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
* Switched from 64M NOR/64M NAND to 4M NOR/256M NAND.
* Full DTM support including critical temperature.
* Added POST information.
* Removed LED function, moved to new LED driver.
* Moved ad7414 to new style I2C initialization.
Signed-off-by: Sean MacLennan <smaclennan@pikatech.com>
Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
This fixes the PCI node in the Rainier to match the spec from AMCC. A
similar fix was done for 440EPx, which shares the same values as 440GRx.
Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
At the moment we have a mixture of left-over version 0 and new-format
version 1 files in arch/powerpc/boot/dts. This is potentially
confusing to people new to the dts format attempting to figure it out.
So, this patch converts all the as-yet unconverted dts v0 files and
converts them to v1. They're mechanically-converted, and not hand
tweaked so in some cases they're not 100% in keeping with usual v1
style, but the convertor program does have some heuristics so the
discrepancies aren't too bad.
I have checked that this patch produces no changes to the resulting
dtb binaries.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Acked-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
Acked-by: Geoff Levand <geoffrey.levand@am.sony.com>
Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
Previously, DCR support was configured at compile time to either use
MMIO or native dcr instructions. Although this works for most
platforms, it fails on FPGA platforms:
1) Systems may include more than one DCR bus.
2) Systems may be native DCR capable and still use memory mapped DCR interface.
This patch provides runtime support based on the device trees for the
case where CONFIG_PPC_DCR_MMIO and CONFIG_PPC_DCR_NATIVE are both
selected. Previously, this was a poorly defined configuration, which
happened to provide NATIVE support. The runtime selection is made
based on the dcr-controller having a 'dcr-access-method' attribute
in the device tree. If only one of the above options is selected,
then the code uses #defines to select only the used code in order to
avoid introducing overhead in existing usage.
Signed-off-by: Stephen Neuendorffer <stephen.neuendorffer@xilinx.com>
Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
The commit
commit 4b82b27770
Author: Cyrill Gorcunov <gorcunov@gmail.com>
Date: Sat May 24 19:36:35 2008 +0400
set nmi_watchdog to NMI_IO_APIC as by default. This causes hangs on some
machines with buggy watchdogs. Fix it - i.e. restore old behaviour.
Thanks to Sitsofe Wheeler and Adrian Bunk for catching the problem
and Maciej W. Rozycki for explanation what is going on there.
Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
CC: Maciej W. Rozycki <macro@linux-mips.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Trying to boot a 64-bit kernel on a 32bit Pentium 4 gets
you an amusing message along the lines of.
"you need an x86-64, but you only have an i1586"
due to the P4 being family F. Munge it to be 686.
Signed-off-by: Dave Jones <davej@redhat.com>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
move interrupt, page_fault, non_syscall, dispatch_unaligned_handler and
dispatch_to_fault_handler to avoid lack of instructin space.
The change set 4dcc29e157 bloated
SAVE_MIN_WITH_COVER, SAVE_MIN_WITH_COVER_R19 so that it bloated the
functions which uses those macros.
In the native case, only dispatch_illegal_op_fault had to be moved.
When paravirtualized case the all functions which use the macros need
to be moved to avoid the lack of space.
Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
Signed-off-by: Tony Luck <tony.luck@intel.com>
-tip tree auto-testing found the following early bootup hang:
-------------->
get_memcfg_from_srat: assigning address to rsdp
RSD PTR v0 [Nvidia]
BUG: Int 14: CR2 ffd00040
EDI 8092fbfe ESI ffd00040 EBP 80b0aee8 ESP 80b0aed0
EBX 000f76f0 EDX 0000000e ECX 00000003 EAX ffd00040
err 00000000 EIP 802c055a CS 00000060 flg 00010006
Stack: ffd00040 80bc78d0 80b0af6c 80b1dbfe 8093d8ba 00000008 80b42810 80b4ddb4
80b42842 00000000 80b0af1c 801079c8 808e724e 00000000 80b42871 802c0531
00000100 00000000 0003fff0 80b0af40 80129999 00040100 00040100 00000000
Pid: 0, comm: swapper Not tainted 2.6.26-rc4-sched-devel.git #570
[<802c055a>] ? strncmp+0x11/0x25
[<80b1dbfe>] ? get_memcfg_from_srat+0xb4/0x568
[<801079c8>] ? mcount_call+0x5/0x9
[<802c0531>] ? strcmp+0xa/0x22
[<80129999>] ? printk+0x38/0x3a
[<80129999>] ? printk+0x38/0x3a
[<8011b122>] ? memory_present+0x66/0x6f
[<80b216b4>] ? setup_memory+0x13/0x40c
[<80b16b47>] ? propagate_e820_map+0x80/0x97
[<80b1622a>] ? setup_arch+0x248/0x477
[<80129999>] ? printk+0x38/0x3a
[<80b11759>] ? start_kernel+0x6e/0x2eb
[<80b110fc>] ? i386_start_kernel+0xeb/0xf2
=======================
<------
with this config:
http://redhat.com/~mingo/misc/config-Wed_May_28_01_33_33_CEST_2008.bad
The thing is, the crash makes little sense at first sight. We crash on a
benign-looking printk. The code around it got changed in -tip but
checking those topic branches individually did not reproduce the bug.
Bisection led to this commit:
| d5edbc1f75 is first bad commit
| commit d5edbc1f75
| Author: Jeremy Fitzhardinge <jeremy@goop.org>
| Date: Mon May 26 23:31:22 2008 +0100
|
| xen: add p2m mfn_list_list
Which is somewhat surprising, as on native hardware Xen client side
should have little to no side-effects.
After some head scratching, it turns out the following happened:
randconfig enabled the following Xen options:
CONFIG_XEN=y
CONFIG_XEN_MAX_DOMAIN_MEMORY=8
# CONFIG_XEN_BLKDEV_FRONTEND is not set
# CONFIG_XEN_NETDEV_FRONTEND is not set
CONFIG_HVC_XEN=y
# CONFIG_XEN_BALLOON is not set
which activated this piece of code in arch/x86/xen/mmu.c:
> @@ -69,6 +69,13 @@
> __attribute__((section(".data.page_aligned"))) =
> { [ 0 ... TOP_ENTRIES - 1] = &p2m_missing[0] };
>
> +/* Arrays of p2m arrays expressed in mfns used for save/restore */
> +static unsigned long p2m_top_mfn[TOP_ENTRIES]
> + __attribute__((section(".bss.page_aligned")));
> +
> +static unsigned long p2m_top_mfn_list[TOP_ENTRIES / P2M_ENTRIES_PER_PAGE]
> + __attribute__((section(".bss.page_aligned")));
The problem is, you must only put variables into .bss.page_aligned that
have a _size_ that is _exactly_ page aligned. In this case the size of
p2m_top_mfn_list is not page aligned:
80b8d000 b p2m_top_mfn
80b8f000 b p2m_top_mfn_list
80b8f008 b softirq_stack
80b97008 b hardirq_stack
80b9f008 b bm_pte
So all subsequent variables get unaligned which, depending on luck,
breaks the kernel in various funny ways. In this case what killed the
kernel first was the misaligned bootmap pte page, resulting in that
creative crash above.
Anyway, this was a fun bug to track down :-)
I think the moral is that .bss.page_aligned is a dangerous construct in
its current form, and the symptoms of breakage are very non-trivial, so
i think we need build-time checks to make sure all symbols in
.bss.page_aligned are truly page aligned.
The Xen fix below gets the kernel booting again.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Introduce pv_time_ops which adds hook to steal time accounting.
On virtualized environment, cpus are shared by many guests and
steal time is the time which is used for other guests.
On virtualized environtment, streal time should be accounted.
Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
Signed-off-by: Tony Luck <tony.luck@intel.com>
introduce pv_irq_ops which adds hooks to paravirtualize irq related
operations.
On virtualized environment, interruption may be replaced by something
virtualization friendly. So the irq related operation also may need
paravirtualization.
This patch adds necessary hooks to paravirtualize irq related operations.
Signed-off-by: Yaozu (Eddie) Dong <eddie.dong@intel.com>
Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
Signed-off-by: Tony Luck <tony.luck@intel.com>
add hooks to paravirtualize iosapic which is a real hardware resource.
On virtualized environment it may be replaced something virtualized
friendly.
Define pv_iosapic_ops and add the hooks.
Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
Signed-off-by: Tony Luck <tony.luck@intel.com>
define pv_init_ops hooks which represents various initialization
hooks for paravirtualized environment. and add hooks.
Signed-off-by: Alex Williamson <alex.williamson@hp.com>
Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
Signed-off-by: Tony Luck <tony.luck@intel.com>
Make NR_IRQ overridable by each pv instances.
Pv instance may need each own number of irqs so that
NR_IRQS should be the maximum number of nr_irqs each
pv instances need.
Cc: Jes Sorensen <jes@sgi.com>
Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
Signed-off-by: Tony Luck <tony.luck@intel.com>
paravirtualize ia64_swtich_to, ia64_leave_syscall and ia64_leave_kernel.
They include sensitive or performance critical privileged instructions
so that they need paravirtualization.
To paravirtualize them by single source and multi compile
they are converted into indirect jump. And define each pv instances.
Cc: Keith Owens <kaos@ocs.com.au>
Cc: "Dong, Eddie" <eddie.dong@intel.com>
Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
Signed-off-by: Tony Luck <tony.luck@intel.com>
paravirtualize ivt.S which implements fault handler in hand written
assembly code.
They includes sensitive or performance critical privileged instructions.
So they need paravirtualization.
Cc: Keith Owens <kaos@ocs.com.au>
Cc: tgingold@free.fr
Cc: Akio Takebe <takebe_akio@jp.fujitsu.com>
Signed-off-by: Yaozu (Eddie) Dong <eddie.dong@intel.com>
Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
Signed-off-by: Tony Luck <tony.luck@intel.com>
paravirtualize minstate.h which are hand written assembly code.
They include sensitive or performance critical privileged
instructions. So that they are appropriate for paravirtualization.
Cc: Keith Owens <kaos@ocs.com.au>
Cc: Akio Takebe <takebe_akio@jp.fujitsu.com>
Signed-off-by: Yaozu (Eddie) Dong <eddie.dong@intel.com>
Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
Signed-off-by: Tony Luck <tony.luck@intel.com>
Preparation for paravirtualization of hand written assembly code.
They are paravirtualized by single source code and compiled multi times.
To tell those files for target (including native), add one defines.
Cc: "Dong, Eddie" <eddie.dong@intel.com>
Cc: Keith Owens <kaos@ocs.com.au>
Cc: tgingold@free.fr
Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
Signed-off-by: Tony Luck <tony.luck@intel.com>
introduce pv_cpu_ops to paravirtualize privleged instructions
which are defined by ia64 intrinsics.
make them indirect C function calls by introducing function
tables, pv_cpu_ops.
Signed-off-by: Yaozu (Eddie) Dong <eddie.dong@intel.com>
Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
Signed-off-by: Tony Luck <tony.luck@intel.com>
This patch adds a setup hook in the very early boot sequence
before start_kernel() to initialize paravirtualization stuff.
The hook will be set by each pv loader code or by using multi entry point.
Signed-off-by: Qing He <qing.he@intel.com>
Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
Signed-off-by: Tony Luck <tony.luck@intel.com>
introduce pv_info which describes some randome info about
underlying execution environment.
Cc: Jes Sorensen <jes@sgi.com>
Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
Signed-off-by: Tony Luck <tony.luck@intel.com>
Move the LOAD_OFFSET definition from vmlinux.lds.S into system.h.
On paravirtualized environments, it is necessary to detect the
execution environment. One of the solutions is the multi entry point.
The multi entry point allows a boot loader to start the kernel execution
from the entry point which is different from the ELF entry point.
The non standard entry point will defined as the specialized elf note
which contains the LMA of the entry point symbol.
The constant, LOAD_OFFSET, is necessary to calculate the symbol's LMA.
Move the definition into the public header file to make it available
to the multi entry point support.
Cc: "He, Qing" <qing.he@intel.com>
Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
Signed-off-by: Tony Luck <tony.luck@intel.com>
remove extern declaration of handle_IPI() in irq_ia64.c.
Instead, declare it in asm-ia64/smp.h.
Later handle_IPI() will be referenced from another file.
Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
Signed-off-by: Tony Luck <tony.luck@intel.com>
