Ingo Molnar [Thu, 22 Feb 2007 08:38:22 +0000 (09:38 +0100)]
[PATCH] x86: add -freg-struct-return to CFLAGS
Jeremy Fitzhardinge suggested the use of -freg-struct-return, which does
structure-returns (such as when using pte_t) in registers instead of on
the stack.
that is indeed so, and this option reduced the kernel size a bit:
* master.kernel.org:/pub/scm/linux/kernel/git/kyle/parisc-2.6: (78 commits)
[PARISC] Use symbolic last syscall in __NR_Linux_syscalls
[PARISC] Add missing statfs64 and fstatfs64 syscalls
Revert "[PARISC] Optimize TLB flush on SMP systems"
[PARISC] Compat signal fixes for 64-bit parisc
[PARISC] Reorder syscalls to match unistd.h
Revert "[PATCH] make kernel/signal.c:kill_proc_info() static"
[PARISC] fix sys_rt_sigqueueinfo
[PARISC] fix section mismatch warnings in harmony sound driver
[PARISC] do not export get_register/set_register
[PARISC] add ENTRY()/ENDPROC() and simplify assembly of HP/UX emulation code
[PARISC] convert to use CONFIG_64BIT instead of __LP64__
[PARISC] use CONFIG_64BIT instead of __LP64__
[PARISC] add ASM_EXCEPTIONTABLE_ENTRY() macro
[PARISC] more ENTRY(), ENDPROC(), END() conversions
[PARISC] fix ENTRY() and ENDPROC() for 64bit-parisc
[PARISC] Fixes /proc/cpuinfo cache output on B160L
[PARISC] implement standard ENTRY(), END() and ENDPROC()
[PARISC] kill ENTRY_SYS_CPUS
[PARISC] clean up debugging printks in smp.c
[PARISC] factor syscall_restart code out of do_signal
...
Fix conflict in include/linux/sched.h due to kill_proc_info() being made
publicly available to PARISC again.
Bernhard Walle [Mon, 26 Feb 2007 20:10:32 +0000 (12:10 -0800)]
[XFRM]: Fix oops in xfrm4_dst_destroy()
With 2.6.21-rc1, I get an oops when running 'ifdown eth0' and an IPsec
connection is active. If I shut down the connection before running 'ifdown
eth0', then there's no problem. The critical operation of this script is to
kill dhcpd.
This patch fixes that oops. I don't know the network code of the Linux
kernel in deep, so if that fix is wrong, please change it. But please
fix the oops. :)
Signed-off-by: Bernhard Walle <bwalle@suse.de> Acked-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
Eric Paris [Thu, 22 Feb 2007 23:11:31 +0000 (18:11 -0500)]
Reassign printk levels in selinux kernel code
Below is a patch which demotes many printk lines to KERN_DEBUG from
KERN_INFO. It should help stop the spamming of logs with messages in
which users are not interested nor is there any action that users should
take. It also promotes some KERN_INFO to KERN_ERR such as when there
are improper attempts to register/unregister security modules.
A similar patch was discussed a while back on list:
http://marc.theaimsgroup.com/?t=116656343500003&r=1&w=2
This patch addresses almost all of the issues raised. I believe the
only advice not taken was in the demoting of messages related to
undefined permissions and classes.
Signed-off-by: Eric Paris <eparis@redhat.com> Acked-by: Stephen Smalley <sds@tycho.nsa.gov>
security/selinux/hooks.c | 20 ++++++++++----------
security/selinux/ss/avtab.c | 2 +-
security/selinux/ss/policydb.c | 6 +++---
security/selinux/ss/sidtab.c | 2 +-
4 files changed, 15 insertions(+), 15 deletions(-) Signed-off-by: James Morris <jmorris@namei.org>
[XFRM_TUNNEL]: Reload header pointer after pskb_may_pull/pskb_expand_head
Please consider applying, this was found on your latest
net-2.6 tree while playing around with that ip_hdr() + turn
skb->nh/h/mac pointers as offsets on 64 bits idea :-)
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Having a work queue for checking carrier leads to lots of race issues.
Simpler to just get the cost when data structure is created and
update on change.
Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org> Signed-off-by: David S. Miller <davem@davemloft.net>
Herbert Xu [Wed, 21 Feb 2007 16:53:47 +0000 (01:53 +0900)]
[IPV4] devinet: Register inetdev earlier.
This patch allocates inetdev at registration for all devices
in line with IPv6. This allows sysctl configuration on the
devices to occur before they're brought up or addresses are
added.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Vlad Yasevich [Wed, 21 Feb 2007 10:06:19 +0000 (02:06 -0800)]
[SCTP]: Strike the transport before updating rto.
Once we reach a point where we exceed the max.path.retrans, strike the
transport before updating the rto. This will force transport switch at
the right time, instead of 1 retransmit too late.
Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com> Signed-off-by: Sridhar Samudrala <sri@us.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Vlad Yasevich [Wed, 21 Feb 2007 10:06:04 +0000 (02:06 -0800)]
[SCTP]: Fix connection hang/slowdown with PR-SCTP
The problem that this patch corrects happens when all of the following
conditions are satisfisfied:
1. PR-SCTP is used and the timeout on the chunks is set below RTO.Max.
2. One of the paths on a multihomed associations is brought down.
In this scenario, data will expire within the rto of the initial
transmission and will never be retransmitted. However this data still
fills the send buffer and is counted against the association as outstanding
data. This causes any new data not to be sent and retransmission to not
happen.
The fix is to discount the abandoned data from the outstanding count and
peers rwnd estimation. This allows new data to be sent and a retransmission
timer restarted. Even though this new data will most likely expire within
the rto, the timer still counts as a strike against the transport and forces
the FORWARD-TSN chunk to be retransmitted as well.
Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com> Signed-off-by: Sridhar Samudrala <sri@us.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Michael Chan [Wed, 21 Feb 2007 07:25:40 +0000 (23:25 -0800)]
[TG3]: TSO workaround fixes.
1. Add race condition check after netif_stop_queue(). tg3_tx() runs
without netif_tx_lock and can race with tg3_start_xmit_dma_bug() ->
tg3_tso_bug().
2. Firmware TSO in 5703/5704/5705 also have the same TSO limitation,
i.e. they cannot handle TSO headers bigger than 80 bytes. Rename
TG3_FL2_HW_TSO_1_BUG to TG3_FL2_TSO_BUG and set this flag on
these chips as well.
3. Update version to 3.74.
Signed-off-by: Michael Chan <mchan@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Joe Jin [Tue, 20 Feb 2007 09:30:15 +0000 (01:30 -0800)]
[IPV6]: Adjust inet6_exit() cleanup sequence against inet6_init()
This patch for adjust inet6_exit() to inverse sequence to inet6_init().
At ipv6_init, it first create proc_root/net/dev_snmp6 entry by call
ipv6_misc_proc_init(), then call addrconf_init() to create the corresponding
device entry at this directory, but at inet6_exit, ipv6_misc_proc_exit()
called first, then call addrconf_init().
Signed-off-by: Joe Jin <joe.jin@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Noriaki TAKAMIYA [Tue, 20 Feb 2007 09:08:41 +0000 (01:08 -0800)]
[IPSEC]: More fix is needed for __xfrm6_bundle_create().
Fixed to set fl_tunnel.fl6_src correctly in xfrm6_bundle_create().
Signed-off-by: Noriaki TAKAMIYA <takamiya@po.ntts.co.jp> Acked-by: Masahide NAKAMURA <nakam@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
Marcel Holtmann [Sat, 17 Feb 2007 22:58:57 +0000 (23:58 +0100)]
[Bluetooth] Make use of device_move() for RFCOMM TTY devices
In the case of bound RFCOMM TTY devices the parent is not available
before its usage. So when opening a RFCOMM TTY device, move it to
the corresponding ACL device as a child. When closing the device,
move it back to the virtual device tree.
Marcel Holtmann [Sat, 17 Feb 2007 22:58:53 +0000 (23:58 +0100)]
[Bluetooth] Add open and close callbacks for HID device
The open and close callbacks for the HID device are not optional, but
for the Bluetooth HID report mode support it is enough to add empty
dummy callbacks.
* master.kernel.org:/pub/scm/linux/kernel/git/gregkh/driver-2.6:
Revert "Driver core: let request_module() send a /sys/modules/kmod/-uevent"
Driver core: fix error by cleanup up symlinks properly
make kernel/kmod.c:kmod_mk static
power management: fix struct layout and docs
power management: no valid states w/o pm_ops
Driver core: more fallout from class_device changes for pcmcia
sysfs: move struct sysfs_dirent to private header
driver core: refcounting fix
Driver core: remove class_device_rename
* master.kernel.org:/pub/scm/linux/kernel/git/gregkh/usb-2.6:
USB: export autosuspend delay in sysfs
sysfs: allow attributes to be added to groups
USB: make autosuspend delay a module parameter
USB: minor cleanups for sysfs.c
USB: add a blacklist for devices that can't handle some things we throw at them.
USB: refactor usb device matching and create usb_device_match
USB: Wacom driver updates
gadgetfs: Fixed bug in ep_aio_read_retry.
USB: Use USB defines in usbmouse.c and usbkbd.c
USB: add rationale on why usb descriptor structures have to be packed
USB: ftdi_sio: Adding VID and PID for Tellstick
UHCI: Eliminate asynchronous skeleton Queue Headers
UHCI: Add macros for computing DMA values
USB: Davicom DM9601 usbnet driver
USB: asix.c - Add JVC-PRX1 ids
usbmon: Remove erroneous __exit
USB: add driver for iowarrior devices.
USB: option: add a bunch of new device ids
USB: option: remove duplicate device id table
Linus Torvalds [Mon, 26 Feb 2007 19:40:46 +0000 (11:40 -0800)]
Merge branch 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus
* 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus:
[MIPS] Fix port 0 mac address for mips mv6434x platforms
[SERIAL] serial_txx9 driver update
Revert "[PATCH] Generic ioremap_page_range: mips conversion"
[MIPS] Cobalt: Rename "Colo" MTD partition to "firmware".
[MIPS] SMP: Get smp_tune_scheduling to do something useful.
[MIPS] Add basic SMARTMIPS ASE support
David S. Miller [Sun, 25 Feb 2007 06:11:42 +0000 (22:11 -0800)]
[TICK] tick-common: Fix one-shot handling in tick_handle_periodic().
When clockevents_program_event() is given an expire time in the
past, it does not update dev->next_event, so this looping code
would loop forever once the first in-the-past expiration time
was used.
Keep advancing "next" locally to fix this bug.
Acked-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: David S. Miller <davem@davemloft.net>
move_native_irqs tries to do the right thing when migrating irqs
by disabling them. However disabling them is a software logical
thing, not a hardware thing. This has always been a little flaky
and after Ingo's latest round of changes it is guaranteed to not
mask the apic.
So this patch fixes move_native_irq to directly call the mask and
unmask chip methods to guarantee that we mask the irq when we
are migrating it. We must do this as it is required by
all code that call into the path.
Since we don't know the masked status when IRQ_DISABLED is
set so we will not be able to restore it. The patch makes the code
just give up and trying again the next time this routing is called.
Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> Acked-by: Suresh Siddha <suresh.b.siddha@intel.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
[PATCH] x86_64 irq: Safely cleanup an irq after moving it.
The problem: After moving an interrupt when is it safe to teardown
the data structures for receiving the interrupt at the old location?
With a normal pci device it is possible to issue a read to a device
to flush all posted writes. This does not work for the oldest ioapics
because they are on a 3-wire apic bus which is a completely different
data path. For some more modern ioapics when everything is using
front side bus delivery you can flush interrupts by simply issuing a
read to the ioapic. For other modern ioapics emperical testing has
shown that this does not work.
So it appears the only reliable way to know the last of the irqs from an
ioapic have been received from before the ioapic was reprogrammed is to
received the first irq from the ioapic from after it was reprogrammed.
Once we know the last irq message has been received from an ioapic
into a local apic we then need to know that irq message has been
processed through the local apics.
Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
[PATCH] x86_64 irq: Add constants for the reserved IRQ vectors.
For the ISA irqs we reserve 16 vectors. This patch adds constants for
those vectors and modifies the code to use them. Making the code a
little clearer and making it possible to move these vectors in the future.
Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
The code in io_apic.c and in i8259.c currently hardcode the same
vector for the timer interrupt so there is no reason for a special
assignment for the timer as the setup for the i8259 already takes care
of this.
Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Currently assign_irq_vector works mostly by side effect and returns
the results of it's changes to the caller. Which makes for a lot of
arguments to pass/return and confusion as to what to do if you need
the status but you aren't calling assign_irq_vector.
This patch stops returning values from assign_irq_vector that can be
retrieved just as easily by examining irq_cfg, and modifies the
callers to retrive those values from irq_cfg when they need them.
Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
[PATCH] x86_64 irq: Begin consolidating per_irq data in structures.
Currently the io_apic.c has several parallel arrays for different
kinds of data that can be know about an irq. The parallel arrays
make the code harder to maintain and make it difficult to remove
the static limits on the number of the number of irqs.
This patch pushes irq_data and irq_vector into a irq_cfg array and
updates the code to use it.
Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
[PATCH] x86_64 irq: Use NR_IRQS not NR_IRQ_VECTORS
NR_IRQ_VECTORS is currently a compatiblity define set to NR_IRQs.
This patch updates the users of NR_IRQ_VECTORS to use NR_IRQs instead
so that NR_IRQ_VECTORS can be removed.
There is still shared code with arch/i386 that uses NR_IRQ_VECTORS
so we can't remove the #define just yet :(
Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
[PATCH] x86_64 irq: In __DO_ACTION perform the FINAL action for every entry.
If we have an irq that comes from multiple io_apic pins the FINAL action
(which is io_apic_sync or nothing) needs to be called for every entry or
else if the two pins come from different io_apics we may not wait until
after the action happens on the io_apic.
Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
[PATCH] x86_64 irq: Simplfiy the set_affinity logic.
For some reason the code has been picking TARGET_CPUS when asked to
set the affinity to an empty set of cpus. That is just silly it's
extra work. Instead if there are no cpus to set the affinity to we
should just give up immediately. That is simpler and a little more
intuitive.
Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Currently we have two routines that do practically the same thing
setup_IO_APIC_irq and io_apic_set_pci_routing. This patch makes
setup_IO_APIC_irq the common factor of these two previous routines.
For setup_IO_APIC_irq all that was needed was to pass the trigger
and polarity to make the code a proper subset of io_apic_set_pci_routing.
Hopefully consolidating these two routines will improve maintenance
there were several differences that simply appear to be one routine
or the other getting it wrong.
Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This patch replaces all instances of "set_native_irq_info(irq, mask)"
with "irq_desc[irq].affinity = mask". The latter form is clearer
uses fewer abstractions, and makes access to this field uniform
accross different architectures.
Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Uwe Bugla reports that he cannot mount a floppy drive any more, and Jiri
Slaby bisected it down to this commit.
Benjamin LaHaise also points out that this is a big hot-path, and that
interrupt delivery while idle is very common and should not go through
all these expensive gyrations.
Fix up conflicts in arch/i386/kernel/apic.c and arch/i386/kernel/irq.c
due to other unrelated irq changes.
Alan Stern [Tue, 20 Feb 2007 20:03:32 +0000 (15:03 -0500)]
USB: export autosuspend delay in sysfs
This patch (as861) adds sysfs attributes to expose the autosuspend
delay value for each USB device. If the user changes the delay from 0
(no autosuspend) to a positive value, an autosuspend is attempted.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Alan Stern [Tue, 20 Feb 2007 20:02:44 +0000 (15:02 -0500)]
sysfs: allow attributes to be added to groups
This patch (as860) adds two new sysfs routines:
sysfs_add_file_to_group() and sysfs_remove_file_from_group().
A later patch adds code that uses the new routines.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu> Cc: Maneesh Soni <maneesh@in.ibm.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Alan Stern [Tue, 20 Feb 2007 20:00:53 +0000 (15:00 -0500)]
USB: make autosuspend delay a module parameter
This patch (as859) makes the default USB autosuspend delay a module
parameter of usbcore. By setting the delay value at boot time, users
will be able to prevent the system from autosuspending devices which
for some reason can't handle it.
The patch also stores the autosuspend delay as a per-device value. A
later patch will allow the user to change the value, tailoring the
delay for each individual device. A delay value of 0 will prevent
autosuspend.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Sarah Bailey [Fri, 23 Feb 2007 06:36:21 +0000 (22:36 -0800)]
gadgetfs: Fixed bug in ep_aio_read_retry.
I don't think the current code works with multiple iovecs.
The original would just copy the first part of priv->buf
over and over into multiple iovecs.
Signed-off-by: Sarah Bailey <saharabeara@gmail.com> Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
USB: add rationale on why usb descriptor structures have to be packed
Add argumentation in defense of using __attribute__((packed)) in USB
descriptors authored by Dave Brownell. Necessary as in some cases it
seems superfluous.
This patch (as856) attempts to improve the performance of uhci-hcd by
removing the asynchronous skeleton Queue Headers. They don't contain
any useful information but the controller has to read through them at
least once every millisecond, incurring a non-zero DMA overhead.
Now all the asynchronous queues are combined, along with the period-1
interrupt queue, into a single list with a single skeleton QH. The
start of the low-speed control, full-speed control, and bulk sublists
is determined by linear search. Since there should rarely be more
than a couple of QHs in the list, the searches should incur a much
smaller total load than keeping the skeleton QHs.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
It turns out that we end up with a loop trying to load the unix
module and calling netfilter to do that. Will redo the patch
later to not have this loop.
Acked-by: Kay Sievers <kay.sievers@vrfy.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
James Simmons [Wed, 21 Feb 2007 17:44:51 +0000 (17:44 +0000)]
Driver core: fix error by cleanup up symlinks properly
When a device fails to register the class symlinks where not cleaned up.
This left a symlink in the /sys/class/"device"/ directory that pointed
to no where. This caused the sysfs_follow_link Oops I reported earlier.
This patch cleanups up the symlink. Please apply. Thank you.
Signed-Off: James Simmons <jsimmons@infradead.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Johannes Berg [Fri, 16 Feb 2007 09:38:30 +0000 (01:38 -0800)]
power management: fix struct layout and docs
Because the pm ops in powermac are obviously not using them as intended, I
added documentation for it in kernel-doc format.
Reordering the fields in struct pm_ops not only makes the output of kernel-doc
make more sense but also removes a hole from the structure on 64-bit
platforms.
Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Cc: "Randy.Dunlap" <rdunlap@xenotime.net> Cc: Rafael J. Wysocki <rjw@sisk.pl> Cc: Pavel Macheck <pavel@ucw.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Johannes Berg [Fri, 16 Feb 2007 09:38:29 +0000 (01:38 -0800)]
power management: no valid states w/o pm_ops
Change /sys/power/state to not advertise any valid states (except for disk
if SOFTWARE_SUSPEND is enabled) when no pm_ops have been set so userspace
can easily discover what states should be available.
Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Cc: "Randy.Dunlap" <rdunlap@xenotime.net> Cc: Rafael J. Wysocki <rjw@sisk.pl> Cc: Pavel Macheck <pavel@ucw.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Adam J. Richter [Fri, 16 Feb 2007 13:35:25 +0000 (21:35 +0800)]
sysfs: move struct sysfs_dirent to private header
struct sysfs_dirent is private to the fs/sysfs/ subtree. It is
not even referenced as an opaque structure outside of that subtree.
The following patch moves the declaration from include/linux/sysfs.h to
fs/sysfs/sysfs.h, making it clearer that nothing else in the kernel
dereferences it.
I have been running this patch for years. Please integrate and forward
upstream if there are no objections.
From: "Adam J. Richter" <adam@yggdrasil.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Mike Galbraith [Wed, 21 Feb 2007 20:45:35 +0000 (12:45 -0800)]
driver core: refcounting fix
Fix a reference counting bug exposed by commit 725522b5453dd680412f2b6463a988e4fd148757. If driver.mod_name exists, we
take a reference in module_add_driver(), and never release it. Undo that
reference in module_remove_driver().
Signed-off-by: Mike Galbraith <efault@gmx.de> Cc: Kay Sievers <kay.sievers@vrfy.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
No one uses it, and it wasn't exported to modules, so remove it. The
only other user of it was the network code, which is now converted to
use struct device instead.
Franck Bui-Huu [Fri, 2 Feb 2007 16:41:47 +0000 (17:41 +0100)]
[MIPS] Add basic SMARTMIPS ASE support
This patch adds trivial support for SMARTMIPS extension. This extension
is currently implemented by 4KS[CD] CPUs.
Basically it saves/restores ACX register, which is part of the SMARTMIPS
ASE, when needed. This patch does *not* add any support for Smartmips MMU
features.
Futhermore this patch does not add explicit support for 4KS[CD] CPUs since
they are respectively mips32 and mips32r2 compliant. So with the current
processor configuration, a platform that has such CPUs needs to select
both configs:
CPU_HAS_SMARTMIPS
SYS_HAS_CPU_MIPS32_R[12]
This is due to the processor configuration which is mixing up all the
architecture variants and the processor types.
The drawback of this, is that we currently pass '-march=mips32' option to
gcc when building a kernel instead of '-march=4ksc' for 4KSC case. This
can lead to a kernel image a little bit bigger than required.
projects / linux-2.6 / log