Yinghai Lu [Sat, 7 Jun 2008 01:53:33 +0000 (18:53 -0700)]
x86, numa, 32-bit: use find_e820_area() to find KVA RAM on node
don't assume we can use RAM near the end of every node.
Esp systems that have few memory and they could have
kva address and kva RAM all below max_low_pfn.
Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Yinghai Lu [Mon, 9 Jun 2008 02:39:16 +0000 (19:39 -0700)]
mm, x86: shrink_active_range() should check all
Now we are using register_e820_active_regions() instead of
add_active_range() directly. So end_pfn could be different between the
value in early_node_map to node_end_pfn.
So we need to make shrink_active_range() smarter.
shrink_active_range() is a generic MM function in mm/page_alloc.c but
it is only used on 32-bit x86. Should we move it back to some file in
arch/x86?
Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Huang, Ying [Mon, 2 Jun 2008 06:26:21 +0000 (14:26 +0800)]
x86: reserve EFI memory map with reserve_early
This patch reserves the EFI memory map with reserve_early(). Because EFI
memory map is allocated by bootloader, if it is not reserved by
reserved_early(), it may be overwritten through address returned by
find_e820_area().
Huang, Ying [Mon, 2 Jun 2008 06:26:18 +0000 (14:26 +0800)]
x86: reserve highmem pages via reserve_early
This patch makes early reserved highmem pages become reserved
pages. This can be used for highmem pages allocated by bootloader such
as EFI memory map, linked list of setup_data, etc.
Huang, Ying [Mon, 2 Jun 2008 06:26:14 +0000 (14:26 +0800)]
x86: split out common code into find_overlapped_early()
This patch clean up reserve_early() family functions by extracting the
common part of reserve_early(), free_early() and bad_addr() into
find_overlapped_early().
Yinghai Lu [Mon, 2 Jun 2008 06:53:50 +0000 (23:53 -0700)]
x86: clean up max_pfn_mapped usage - 32-bit
on 32-bit in head_32.S after initial page table is done, we get initial
max_pfn_mapped, and then kernel_physical_mapping_init will give us
a final one.
We need to use that to make sure find_e820_area will get valid addresses
for boot_map and for NODE_DATA(0) on numa32.
XEN PV and lguest may need to assign max_pfn_mapped too.
Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Yinghai Lu [Sun, 1 Jun 2008 20:17:38 +0000 (13:17 -0700)]
x86: update mptable
make mptable to be consistent with acpi routing, so we could:
1. kexec kernel with acpi=off
2. work around BIOSes where acpi routing is working, but mptable is
not right, so can use kernel/kexec to start other OSes that don't have
good acpi support.
command line: update_mptable
Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Yinghai Lu [Sun, 1 Jun 2008 05:52:47 +0000 (22:52 -0700)]
x86, 32-bit: change propagate_e820_map() back to find_max_pfn()
we don't need to call memory_present that early.
numa and sparse will call memory_present later and might
even fail, it will call memory_present for the full range.
also for sparse it will call alloc_bootmem ... before we set up bootmem.
Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Yinghai Lu [Sun, 1 Jun 2008 05:53:47 +0000 (22:53 -0700)]
x86: set node_remap_size[0] in fallback path
... otherwise alloc_remap will not get node_mem_map from kva area, and
alloc_node_mem_map has to alloc_bootmem_node to get mem_map.
It will use two low address copies ...
Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Yinghai Lu [Sun, 25 May 2008 17:00:09 +0000 (10:00 -0700)]
x86: extend e820 ealy_res support 32bit - fix #2
remove extra -1 in reseve_early calling
panic if can not find space for new RAMDISK
Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Jeremy Fitzhardinge <jeremy@goop.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Thomas Gleixner [Sun, 25 May 2008 19:21:36 +0000 (21:21 +0200)]
x86: fix mpparse fallout
UP builds with LOCAL_APIC=y and IO_APIC=n fail with a missing
reference to mp_bus_not_pci. Distangle the mpparse code some more and
move the ioapic specific bus check into a separate function.
This code needs sume urgent un#ifdef surgery all over the place.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Soeren Sandmann [Sun, 18 May 2008 03:24:41 +0000 (05:24 +0200)]
x86: initialize all fields of mp_irqs[mp_irq_entries]
Commit "x86: make config_irqsrc not MPspec specific" introduced some uses
of uninitialized fields in mp_config_acpi_legacy_irqs(). I need the
following patch to get sched-devel/master to boot.
Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Yinghai Lu [Thu, 22 May 2008 01:40:18 +0000 (18:40 -0700)]
x86: extend e820 ealy_res support 32bit - fix
use find_e820_area to find addess for new RAMDISK, instead of using ram blindly
also print out low ram and bootmap info
Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Jeremy Fitzhardinge <jeremy@goop.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Yinghai Lu [Sun, 18 May 2008 08:18:57 +0000 (01:18 -0700)]
x86: extend e820 ealy_res support 32bit
move early_res related from e820_64.c to e820.c
make edba detection to be done in head32.c
remove smp_alloc_memory, because we have fixed trampoline address now.
Paul Jackson [Wed, 14 May 2008 15:15:58 +0000 (08:15 -0700)]
x86 boot: add code to add BIOS provided EFI memory entries to kernel
Add to the kernels boot memory map 'memmap' entries found in
the EFI memory descriptors passed in from the BIOS.
On EFI systems, up to E820MAX == 128 memory map entries can
be passed via the legacy E820 interface (limited by the size
of the 'zeropage'). These entries can be duplicated in the
EFI descriptors also passed from the BIOS, and possibly more
entries passed by the EFI interface, which does not have the
E820MAX limit on number of memory map entries.
This code doesn't worry about the likely duplicate, overlapping
or (unlikely) conflicting entries between the EFI map and the
E820 map. It just dumps all the EFI entries into the memmap[]
array (which already has the E820 entries) and lets the existing
routine sanitize_e820_map() sort the mess out.
Signed-off-by: Paul Jackson <pj@sgi.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Paul Jackson [Wed, 14 May 2008 15:15:52 +0000 (08:15 -0700)]
x86 boot: longer comment explaining sanitize_e820_map routine
Elaborate on the comment for sanitize_e820_map(), epxlaining more what
it does, what it inputs, and what it returns. Rearrange the placement of
this comment to fit kernel conventions, before the routine's code rather
than buried inside it.
Signed-off-by: Paul Jackson <pj@sgi.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Paul Jackson [Wed, 14 May 2008 15:15:46 +0000 (08:15 -0700)]
x86 boot: change sanitize_e820_map parameter from byte to int to allow bigger memory maps
The map size counter passed into, and back out of, sanitize_e820_map(),
was an eight bit type (char or u8), as derived from its origins in
legacy BIOS E820 structures. This patch changes that type to an 'int',
to allow this sanitize routine to also be used on larger maps (larger
than the 256 count that fits in a char). The legacy BIOS E820 interface
of course does not change; that remains at 8 bits for this count, holding
up to E820MAX == 128 entries. But the kernel internals can handle more
when those additional memory map entries are passed from the BIOS via
EFI interfaces.
Signed-off-by: Paul Jackson <pj@sgi.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Paul Jackson [Wed, 14 May 2008 15:15:40 +0000 (08:15 -0700)]
x86 boot: extend some internal memory map arrays to handle larger EFI input
Extend internal boot time memory tables to allow for up to
three entries per node, which may be larger than the 128 E820MAX
entries handled by the legacy BIOS E820 interface. The EFI
interface, if present, is capable of passing memory map
entries for these larger node counts.
This patch requires an earlier patch that rewrote code depending
on these array sizes from using E820MAX explicitly to size loops,
to instead using ARRAY_SIZE() of the applicable array.
Another patch following this one will provide the code to pick
up additional memory entries passed via the EFI interface from
the BIOS and insert them in the following, now enlarged, arrays.
Signed-off-by: Paul Jackson <pj@sgi.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Paul Jackson [Wed, 14 May 2008 15:15:34 +0000 (08:15 -0700)]
x86 boot: proper use of ARRAY_SIZE instead of repeated E820MAX constant
This patch is motivated by a subsequent patch which will allow for more
memory map entries on EFI supported systems than can be passed via the x86
legacy BIOS E820 interface. The legacy interface is limited to E820MAX ==
128 memory entries, and that "E820MAX" manifest constant was used as the
size for several arrays and loops over those arrays.
The primary change in this patch is to change code loop sizes over those
arrays from using the constant E820MAX, to using the ARRAY_SIZE() macro
evaluated for the array being looped. That way, a subsequent patch can
change the size of some of these arrays, without breaking this code.
This patch also adds a parameter to the sanitize_e820_map() routine,
which had an implicit size for the array passed it of E820MAX entries.
This new parameter explicitly passes the size of said array. Once again,
this will allow a subsequent patch to change that array size for some
calls to sanitize_e820_map() without breaking the code.
As part of enhancing the sanitize_e820_map() interface this way, I further
combined the unnecessarily distinct x86_32 and x86_64 declarations for
this routine into a single, commonly used, declaration.
This patch in itself should make no difference to the resulting kernel
binary.
[ mingo@elte.hu: merged to -tip ]
Signed-off-by: Paul Jackson <pj@sgi.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Paul Jackson [Wed, 14 May 2008 15:15:23 +0000 (08:15 -0700)]
x86 boot: simplify pageblock_bits enum declaration
The use of #defines with '##' pre-processor concatenation is a useful
way to form several symbol names with a common pattern. But when there
is just a single name obtained from that #define, it's just obfuscation.
Better to just write the plain symbol name, as is.
The following patch is a result of my wasting ten minutes looking through
the kernel to figure out what 'PB_migrate_end' meant, and forgetting what
I came to do, by the time I figured out that the #define PB_range macro
defined it.
Signed-off-by: Paul Jackson <pj@sgi.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Paul Jackson [Wed, 14 May 2008 15:15:16 +0000 (08:15 -0700)]
x86 boot: add header comment to dmi.h stating what it is
The "dmi.h" file did not state anywhere in the file what "DMI" was.
For those who know, it's obvious. For the rest of us, I added a
brief opening comment.
Signed-off-by: Paul Jackson <pj@sgi.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Paul Jackson [Wed, 14 May 2008 15:15:04 +0000 (08:15 -0700)]
x86 boot: include missing smp.h header
The patch:
x86: convert cpu_to_apicid to be a per cpu variable
introduced a dependency of ipi.h on smp.h in x86
builds with an allnoconfig. Including smp.h in ipi.h
fixes the build error:
In file included from arch/x86/kernel/traps_64.c:48:
include/asm/ipi.h: In function 'send_IPI_mask_sequence':
include/asm/ipi.h:114: error: 'per_cpu__x86_cpu_to_apicid' undeclared (first use in this function)
Signed-off-by: Paul Jackson <pj@sgi.com> Cc: Mike Travis <travis@sgi.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Yinghai Lu [Fri, 2 May 2008 09:40:22 +0000 (02:40 -0700)]
x86: mtrr cleanup for converting continuous to discrete - auto detect v4
Loop through mtrr chunk_size and gran_size from 1M to 2G to find out
the optimal value so user does not need to add mtrr_chunk_size and
mtrr_gran_size to the kernel command line.
If optimal value is not found, print out all list to help select less
optimal value.
Add mtrr_spare_reg_nr= so user could set 2 instead of 1, if the card
need more entries.
v2: find the one with more spare entries
v3: fix hole_basek offset
v4: tight the compare between range and range_new
loop stop with 4g
Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Gabriel C <nix.or.die@googlemail.com> Cc: Mika Fischer <mika.fischer@zoopnet.de> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Yinghai Lu [Tue, 29 Apr 2008 08:59:49 +0000 (01:59 -0700)]
x86: fix trimming e820 with MTRR holes.
converting MTRR layout from continous to discrete, some time could run out of
MTRRs. So add gran_sizek to prevent that by dumpping small RAM piece less than
gran_sizek.
previous trimming only can handle highest_pfn from mtrr to end_pfn from e820.
when have more than 4g RAM installed, there will be holes below 4g. so need to
check ram below 4g is coverred well.
need to be applied after
[PATCH] x86: mtrr cleanup for converting continuous to discrete layout v7
Signed-off-by: Yinghai Lu <yinghai.lu@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Yinghai Lu [Tue, 29 Apr 2008 10:52:33 +0000 (03:52 -0700)]
x86: mtrr cleanup for converting continuous to discrete layout, v8
some BIOS like to use continus MTRR layout, and X driver can not add
WB entries for graphical cards when 4g or more RAM installed.
the patch will change MTRR to discrete.
mtrr_chunk_size= could be used to have smaller continuous block to hold holes.
default is 256m, could be set according to size of graphics card memory.
mtrr_gran_size= could be used to send smallest mtrr block to avoid run out of MTRRs
v2: fix -1 for UC checking
v3: default to disable, and need use enable_mtrr_cleanup to enable this feature
skip the var state change warning.
remove next_basek in range_to_mtrr()
v4: correct warning mask.
v5: CONFIG_MTRR_SANITIZER
v6: fix 1g, 2g, 512 aligment with extra hole
v7: gran_sizek to prevent running out of MTRRs.
v8: fix hole_basek caculation caused when removing next_basek
gran_sizek using when basek is 0.
need to apply
[PATCH] x86: fix trimming e820 with MTRR holes.
right after this one.
Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
The x86_64 code has centralized the memory setup code in
e820_64.c. This patch copies that approach to i386:
- early_param("mem", ...) parsing is moved from
setup_32.c to e820_32.c.
- setup_memory_map() and finish_e820_parsing() are
factored out from setup_arch(), and declarations
are added to e820_32.h.
- print_memory_map() is made static and removed from
e820_32.h.
- user_defined_memmap is marked as __initdata.
Signed-off-by: Alexander van Heukelum <heukelum@fastmail.fm> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6:
net: The world is not perfect patch.
tcp: Make prior_ssthresh a u32
xfrm_user: Remove zero length key checks.
net/ipv4/arp.c: Use common hex_asc helpers
cassini: Only use chip checksum for ipv4 packets.
tcp: TCP connection times out if ICMP frag needed is delayed
netfilter: Move linux/types.h inclusions outside of #ifdef __KERNEL__
af_key: Fix selector family initialization.
libertas: Fix ethtool statistics
mac80211: fix NULL pointer dereference in ieee80211_compatible_rates
mac80211: don't claim iwspy support
orinoco_cs: add ID for SpeedStream wireless adapters
hostap_cs: add ID for Conceptronic CON11CPro
rtl8187: resource leak in error case
ath5k: Fix loop variable initializations
David S. Miller [Thu, 22 May 2008 01:14:28 +0000 (18:14 -0700)]
sparc64: Fix kernel thread stack termination.
Because of the silly way I set up the initial stack for
new kernel threads, there is a loop at the top of the
stack.
To fix this, properly add another stack frame that is copied
from the parent and terminate it in the child by setting
the frame pointer in that frame to zero.
Signed-off-by: David S. Miller <davem@davemloft.net>
Rami Rosen [Thu, 22 May 2008 00:47:54 +0000 (17:47 -0700)]
net: The world is not perfect patch.
Unless there will be any objection here, I suggest consider the
following patch which simply removes the code for the
-DI_WISH_WORLD_WERE_PERFECT in the three methods which use it.
The compilation errors we get when using -DI_WISH_WORLD_WERE_PERFECT
show that this code was not built and not used for really a long time.
Signed-off-by: Rami Rosen <ramirose@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Ilpo Järvinen [Thu, 22 May 2008 00:40:05 +0000 (17:40 -0700)]
tcp: Make prior_ssthresh a u32
If previous window was above representable values of u16,
strange things will happen if undo with the truncated value
is called for. Alternatively, this could be fixed by some
max trickery but that would limit undoing high-speed undos.
Adds 16-bit hole but there isn't anything to fill it with.
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@helsinki.fi> Signed-off-by: David S. Miller <davem@davemloft.net>
and here to print HW addresses, the hex cases are not significant.
Thanks to Harvey Harrison to introduce the hex_asc_hi/hex_asc_lo helpers.
Signed-off-by: Denis Cheng <crquan@gmail.com> Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Al Viro [Wed, 21 May 2008 05:32:11 +0000 (06:32 +0100)]
provide out-of-line strcat() for m68k
Whether we sidestep it in init/main.c or not, such situations
will arise again; compiler does generate calls of strcat()
on optimizations, so we really ought to have an out-of-line
version...
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
projects / linux-2.6 / log