sh_pcic_io_xxx function are very old.
In linux-2.4, mrshpc_ss socket driver used this function.
But there is not this driver to the present kernel.
I deleted these cords and checked operation.
Signed-off-by: NNobuhiro Iwamatsu <iwamatsu.nobuhiro@renesas.com>
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

The CPU of AP-325RXA is SH7723, but a CPU becomes selectable.
This patch fixes this problem.
Signed-off-by: NNobuhiro Iwamatsu <iwamatsu.nobuhiro@renesas.com>
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

Signed-off-by: NNobuhiro Iwamatsu <iwamatsu.nobuhiro@renesas.com>
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

Enable SH-Ether support and NFS userland support.
Signed-off-by: NNobuhiro Iwamatsu <iwamatsu.nobuhiro@renesas.com>
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

Add support SH-Ether for Hitachi Solution Engine.
Signed-off-by: NNobuhiro Iwamatsu <iwamatsu.nobuhiro@renesas.com>
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

This patch contains the following cleanups:
- make the following needlessly global code static:
  - cf-enabler.c: cf_init()
  - cpu/clock.c: __clk_enable()
  - cpu/clock.c: __clk_disable()
  - process_32.c: default_idle()
  - time_32.c: struct clocksource_sh
  - timers/timer-tmu.c: struct tmu_timer_ops
- remove the following unused functions (no CONFIG_BLK_DEV_FD on sh):
  - process_{32,64}.c: disable_hlt()
  - process_{32,64}.c: enable_hlt()
Signed-off-by: NAdrian Bunk <bunk@kernel.org>
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

This patch makes the needlessly global pcibios_max_latency static.
Signed-off-by: NAdrian Bunk <bunk@kernel.org>
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

This patch makes the needlessly global EARLY_PCI_OP's static.
Signed-off-by: NAdrian Bunk <bunk@kernel.org>
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

This patch makes the needlessly global aica_rtc_{get,set}timeofday()
static.
Signed-off-by: NAdrian Bunk <bunk@kernel.org>
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

The connect and disconnect functions are unnecessary - everything they do can be
accomplished in the initial probe - so remove them.
Signed-off-by: NAdrian McMenamin <adrian@mcmen.demon.co.uk>
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

This patch adds basic support for the SH7763RDP board.
This supports a basic stuff provided in SH7763, like SCIF,
NOR Flash and USB host.
Signed-off-by: NNobuhiro Iwamatsu <iwamatsu.nobuhiro@renesas.com>
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

SH7763 has 3 SCIF device. Current code supports SCIF0 and 1.
SCIF0 and 1 are same register constitution, but only SCIF2 is different.
I added support of SCIF2.
Signed-off-by: NNobuhiro Iwamatsu <iwamatsu.nobuhiro@renesas.com>
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

This board is SH7723 base board.

This has SCIF, LCDC, USB Host controler, NOR/NAND Flash, Sound,
Ether and other.

This patch supports SCIF, NOR Flash.
Signed-off-by: NYusuke Goda <goda.yusuke@renesas.com>
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

This consolidates everything but the bare assembly routines, which we
will sync up in a follow-up patch.
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

16kB is a useful size on nommu, while 64kB still tends to be too big to
be useful. Newer MMUs are likely to support this as well, so plug it
in in anticipation of those, too.
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

PAGE_SIZE doesn't need to be fixed at 4096 on nommu, so stub in a !MMU
case for the various PAGE_SIZE Kconfig options.
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

This moves get_fs/set_fs() and friends in to asm/segment.h. The
mm_segment_t definition is likewise consolidated from the _32/_64 split.

This is prepatory groundwork for using the generic address space limit
and verification routines across mmu/nommu configs.
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

This adds initial support for the RTE RSK+ SH7203 board.
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

Currently this is only linked in for CONFIG_BINFMT_ELF, make it dependent
on CONFIG_ELF_CORE, so it's both selectable there and also linked in for
CONFIG_BINFMT_ELF_FDPIC.
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

This adds initial support for ELF FDPIC on MMU-less SH, as per version
0.2 of the ABI definition at:

	http://www.codesourcery.com/public/docs/sh-fdpic/sh-fdpic-abi.txtSigned-off-by: NPaul Mundt <lethal@linux-sh.org>

While implementing binfmt_elf_fdpic on SH it quickly became apparent
that SH was the first platform to support both binfmt_elf_fdpic and
binfmt_elf, as well as the only of the FDPIC platforms to make use of the
auxvt.

Currently binfmt_elf_fdpic uses a special version of NEW_AUX_ENT() where
the first argument is the entry displacement after csp has been adjusted,
being reset after each adjustment. As we have no ability to sort this out
through the platform's ARCH_DLINFO, this index needs to be managed
entirely in create_elf_fdpic_tables(). Presently none of the platforms
that set their own auxvt entries are able to do so through their
respective ARCH_DLINFOs when using binfmt_elf_fdpic.

In addition to this, binfmt_elf_fdpic has been looking at
DLINFO_ARCH_ITEMS for the number of architecture-specific entries in the
auxvt. This is legacy cruft, and is not defined by any platforms in-tree,
even those that make heavy use of the auxvt. AT_VECTOR_SIZE_ARCH is
always available, and contains the number that is of interest here, so we
switch to using that unconditionally as well.

As this has direct bearing on how much stack is used, platforms that have
configurable (or dynamically adjustable) NEW_AUX_ENT calls need to either
make AT_VECTOR_SIZE_ARCH more fine-grained, or leave it as a worst-case
and live with some lost stack space if those entries aren't pushed (some
platforms may also need to purposely sacrifice some space here for
alignment considerations, as noted in the code -- although not an issue
for any FDPIC-capable platform today).
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>
Acked-by: NDavid Howells <dhowells@redhat.com>

EXPORT_SYMBOL's in lib-y considered harmful:

<--  snip  -->

...
  MODPOST 1837 modules
ERROR: "__raw_readsl" [drivers/ssb/ssb.ko] undefined!
ERROR: "__raw_writesl" [drivers/ssb/ssb.ko] undefined!
ERROR: "__raw_writesl" [drivers/net/smc91x.ko] undefined!
ERROR: "__raw_readsl" [drivers/net/smc91x.ko] undefined!
ERROR: "__raw_writesl" [drivers/net/3c59x.ko] undefined!
ERROR: "__raw_readsl" [drivers/net/3c59x.ko] undefined!
...
make[2]: *** [__modpost] Error 1

<--  snip  -->
Reported-by: NAdrian Bunk <bunk@kernel.org>
Signed-off-by: NAdrian Bunk <bunk@kernel.org>
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

This patch fixes the following build error:

<--  snip  -->

...
  MODPOST 1837 modules
ERROR: "board_pci_channels" [drivers/pcmcia/yenta_socket.ko] undefined!
...
make[2]: *** [__modpost] Error 1

<--  snip  -->

I freely admit that it's a pathological configuration, but as long as
it is allowed it should build.
Reported-by: NAdrian Bunk <bunk@kernel.org>
Signed-off-by: NAdrian Bunk <bunk@kernel.org>
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

This patch fixes the following build error:

<--  snip  -->

...
  MODPOST 1837 modules
ERROR: "get_cpu_subtype" [arch/sh/oprofile/oprofile.ko] undefined!
...
make[2]: *** [__modpost] Error 1

<--  snip  -->
Reported-by: NAdrian Bunk <bunk@kernel.org>
Signed-off-by: NAdrian Bunk <bunk@kernel.org>
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

CONFIG_SUPERH32 is currently trickling into userspace unistd.h. Attached
patch uses __SH5__ define in userspace.
Signed-off-by: NKhem Raj <raj.khem@gmail.com>
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

When using single_open(), single_release() should be used instead
of seq_release(), otherwise there is a memory leak.
Signed-off-by: NLi Zefan <lizf@cn.fujitsu.com>
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

* 'hotfixes' of git://git.linux-nfs.org/projects/trondmy/nfs-2.6:
  NFS: Ensure we call nfs_sb_deactive() after releasing the directory inode
  nfs_remount oops when rebooting + possible fix

* 'x86/urgent' of git://git.kernel.org/pub/scm/linux/kernel/git/x86/linux-2.6-tip:
  x86: fix cpu hotplug on 32bit

* master.kernel.org:/home/rmk/linux-2.6-arm:
  [ARM] Fix shared mmap when more than two maps of the same file exist
  [ARM] fix VIPT/VIVT macro optimisations, add comments
  [ARM] 5179/1: Replace obsolete IRQT_* and __IRQT_* values with IRQ_TYPE_*
  [ARM] update defconfig for eseries.
  [ARM] PXA: squash warning in pxafb
  [ARM] pxa: PXA25x UDC - Fix warning during build
  [ARM] fix nwflash.c: 6ee8928d
  [ARM] fix IOP32x, IOP33x, MXC and Samsung builds
  [ARM] pci: provide dummy pci_get_legacy_ide_irq()
  [ARM] fix fls() for 64-bit arguments
  [ARM] fix mode for board-yl-9200.c
  [ARM] 5176/1: arm/Makefile: fix: ARM946T -> ARM946E

Simplify the code of include/linux/task_io_accounting.h.

It is also more reasonable to have all the task i/o-related statistics in a
single struct (task_io_accounting).
Signed-off-by: NAndrea Righi <righi.andrea@gmail.com>
Signed-off-by: NOleg Nesterov <oleg@tv-sign.ru>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

In order to avoid the "Busy inodes after unmount" error message, we need to
ensure that nfs_async_unlink_release() releases the super block after the
call to nfs_free_unlinkdata().
Signed-off-by: NTrond Myklebust <Trond.Myklebust@netapp.com>

Jeff, Trond,

The commit

48b605f8 (NFS: implement option checking
when remounting NFS filesystems (resend))

generate an Oops on my platform when rebooting while its root FS on
an NFS share (NFSv3, TCP) :

Unmounting local filesystems...done.
Unable to handle kernel NULL pointer dereference at virtual address 00000000
pgd = c3d00000
[00000000] *pgd=a3d72031, *pte=00000000, *ppte=00000000
Internal error: Oops: 17 [#1]
Modules linked in: cpufreq_powersave cpufreq_ondemand cpufreq_userspace cpufreq_conservative ext3 jbd sd_mod pata_pcmcia libata scsi_mod pcmcia loop firmware_class pxafb cfbcopyarea cfbimgblt cfbfillrect pxa2xx_cs pxa2xx_core pcmcia_core snd_pxa2xx_ac97 snd_ac97_codec ac97_bus snd_pxa2xx_pcm snd_pcm_oss snd_mixer_oss snd_pcm snd_timer snd isp116x_hcd soundcore rtc_sa1100 snd_page_alloc pxa25x_udc usbcore rtc_ds1307 rtc_core
CPU: 0    Not tainted  (2.6.26-03414-g33af79d1-dirty #15)
PC is at nfs_remount+0x40/0x264
LR is at do_remount_sb+0x158/0x194
pc : [<c00bbf54>]    lr : [<c0076c40>]    psr: 60000013
sp : c2dd1e70  ip : c2dd1e98  fp : c2dd1e94
r10: 00000040  r9 : c3d17000  r8 : c3c3fc40
r7 : 00000000  r6 : 00000000  r5 : c3d2b200  r4 : 00000000
r3 : 00000003  r2 : 00000000  r1 : c2dd1e9c  r0 : c3c3fc00
Flags: nZCv  IRQs on  FIQs on  Mode SVC_32  ISA ARM  Segment user
Control: 0000397f  Table: a3d00000  DAC: 00000015
Process mount (pid: 1462, stack limit = 0xc2dd0270)
Stack: (0xc2dd1e70 to 0xc2dd2000)
1e60:                                     00000000 c3c3fc00 00000000 00000000
1e80: c3c3fc40 c3d17000 c2dd1ebc c2dd1e98 c0076c40 c00bbf20 c01c61e4 00000001
1ea0: c2dd1ebc 00000001 c3c3fc00 c2dd1ef0 c2dd1ee4 c2dd1ec0 c008c6d8 c0076af4
1ec0: 00000021 00000040 c2dd1ef0 c3d77000 c3eaa000 00000000 c2dd1f6c c2dd1ee8
1ee0: c008d1bc c008c5f8 00000000 c2dd0000 c3c0c320 c3805b38 c002064c 0001f820
1f00: 0001f810 00000001 00000001 00000000 c2dd0000 00000000 c2dd1f34 c2dd1f28
1f20: c005ead8 c005e6f8 c2dd1f44 c2dd1f38 c005eaf8 c005ead0 c2dd1f6c c2dd1f48
1f40: c008ae3c 00000000 c3d77000 0001f810 c0ed0021 c0020ca8 c2dd0000 00000000
1f60: c2dd1fa4 c2dd1f70 c008d2d4 c008d0bc 00000000 0001f810 c2dd1f9c c3eaa000
1f80: c3d17000 00000000 00000000 be8b6aa8 be8b6ad0 00000015 00000000 c2dd1fa8
1fa0: c0020b00 c008d254 00000000 be8b6aa8 0001f810 0001f820 0001f830 c0ed0021
1fc0: 00000000 be8b6aa8 be8b6ad0 00000015 00000000 be8b6ad0 0001f810 be8b6aa8
1fe0: 0001f810 be8b6964 0000aab8 40125124 60000010 0001f810 00000000 00000000
Backtrace:
[<c00bbf14>] (nfs_remount+0x0/0x264) from [<c0076c40>] (do_remount_sb+0x158/0x194)
  r9:c3d17000 r8:c3c3fc40 r7:00000000 r6:00000000 r5:c3c3fc00
r4:00000000
[<c0076ae8>] (do_remount_sb+0x0/0x194) from [<c008c6d8>] (do_remount+0xec/0x118)
  r6:c2dd1ef0 r5:c3c3fc00 r4:00000001
[<c008c5ec>] (do_remount+0x0/0x118) from [<c008d1bc>] (do_mount+0x10c/0x198)
[<c008d0b0>] (do_mount+0x0/0x198) from [<c008d2d4>] (sys_mount+0x8c/0xd4)
[<c008d248>] (sys_mount+0x0/0xd4) from [<c0020b00>] (ret_fast_syscall+0x0/0x2c)
  r7:00000015 r6:be8b6ad0 r5:be8b6aa8 r4:00000000
Code: 0a000086 ea000006 e3530003 8a000004 (e5923000)
---[ end trace 55e1b689cf8c8a6a ]---
------------[ cut here ]------------
WARNING: at kernel/exit.c:966 do_exit+0x3c/0x628()
Modules linked in: cpufreq_powersave cpufreq_ondemand cpufreq_userspace cpufreq_conservative ext3 jbd sd_mod pata_pcmcia libata scsi_mod pcmcia loop firmware_class pxafb cfbcopyarea cfbimgblt cfbfillrect pxa2xx_cs pxa2xx_core pcmcia_core snd_pxa2xx_ac97 snd_ac97_codec ac97_bus snd_pxa2xx_pcm snd_pcm_oss snd_mixer_oss snd_pcm snd_timer snd isp116x_hcd soundcore rtc_sa1100 snd_page_alloc pxa25x_udc usbcore rtc_ds1307 rtc_core
[<c0025168>] (dump_stack+0x0/0x14) from [<c0032154>] (warn_on_slowpath+0x4c/0x68)
[<c0032108>] (warn_on_slowpath+0x0/0x68) from [<c003531c>] (do_exit+0x3c/0x628)
  r6:0000000b r5:c3c3dc80 r4:c2dd0000
[<c00352e0>] (do_exit+0x0/0x628) from [<c0025004>] (die+0x2b0/0x30c)
[<c0024d54>] (die+0x0/0x30c) from [<c00270bc>] (__do_kernel_fault+0x6c/0x80)
[<c0027050>] (__do_kernel_fault+0x0/0x80) from [<c00272e0>] (do_page_fault+0x210/0x230)
  r7:c3fa7118 r6:c3c3dc80 r5:c3d166a8 r4:00010000
[<c00270d0>] (do_page_fault+0x0/0x230) from [<c00201ec>] (do_DataAbort+0x3c/0xa0)
[<c00201b0>] (do_DataAbort+0x0/0xa0) from [<c002064c>] (__dabt_svc+0x4c/0x60)
Exception stack(0xc2dd1e28 to 0xc2dd1e70)
1e20:                   c3c3fc00 c2dd1e9c 00000000 00000003 00000000 c3d2b200
1e40: 00000000 00000000 c3c3fc40 c3d17000 00000040 c2dd1e94 c2dd1e98 c2dd1e70
1e60: c0076c40 c00bbf54 60000013 ffffffff
  r8:c3c3fc40 r7:00000000 r6:00000000 r5:c2dd1e5c r4:ffffffff
[<c00bbf14>] (nfs_remount+0x0/0x264) from [<c0076c40>] (do_remount_sb+0x158/0x194)
  r9:c3d17000 r8:c3c3fc40 r7:00000000 r6:00000000 r5:c3c3fc00
r4:00000000
[<c0076ae8>] (do_remount_sb+0x0/0x194) from [<c008c6d8>] (do_remount+0xec/0x118)
  r6:c2dd1ef0 r5:c3c3fc00 r4:00000001
[<c008c5ec>] (do_remount+0x0/0x118) from [<c008d1bc>] (do_mount+0x10c/0x198)
[<c008d0b0>] (do_mount+0x0/0x198) from [<c008d2d4>] (sys_mount+0x8c/0xd4)
[<c008d248>] (sys_mount+0x0/0xd4) from [<c0020b00>] (ret_fast_syscall+0x0/0x2c)
  r7:00000015 r6:be8b6ad0 r5:be8b6aa8 r4:00000000
---[ end trace 55e1b689cf8c8a6a ]---
/etc/rc6.d/S60umountroot: line 17:  1462 Segmentation fault      mount $MOUNT_FORCE_OPT -n -o remount,ro -t dummytype dummydev / 2> /dev/null

The new super.c:nfs_remount function doesn't check the validity of the
options/options4 pointers. Unfortunately, this seems to happend.
The obvious patch seems to check the pointers, and not to do anything if
the happend to be NULL.

Tested on an XScale PXA255 system, latest git.

Regards,

	M.
Signed-off-by: NMarc Zyngier <marc.zyngier@altran.com>
Signed-off-by: NTrond Myklebust <Trond.Myklebust@netapp.com>

commit 3e970473 ("x86: boot secondary
cpus through initial_code") causes the kernel to crash when a CPU is
brought online after the read only sections have been write
protected. The write to initial_code in do_boot_cpu() fails.

Move inital_code to .cpuinit.data section.
Signed-off-by: NThomas Gleixner <tglx@linutronix.de>
Acked-by: NH. Peter Anvin <hpa@zytor.com>

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394-2.6:
  firewire: state userland requirements in Kconfig help
  firewire: avoid memleak after phy config transmit failure
  firewire: fw-ohci: TSB43AB22/A dualbuffer workaround
  firewire: queue the right number of data
  firewire: warn on unfinished transactions during card removal
  firewire: small fw_fill_request cleanup
  firewire: fully initialize fw_transaction before marking it pending
  firewire: fix race of bus reset with request transmission

* git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6: (59 commits)
  [SCSI] replace __FUNCTION__ with __func__
  [SCSI] extend the last_sector_bug flag to cover more sectors
  [SCSI] qla2xxx: Update version number to 8.02.01-k6.
  [SCSI] qla2xxx: Additional NPIV corrections.
  [SCSI] qla2xxx: suppress uninitialized-var warning
  [SCSI] qla2xxx: use memory_read_from_buffer()
  [SCSI] qla2xxx: Issue proper ISP callbacks during stop-firmware.
  [SCSI] ch: fix ch_remove oops
  [SCSI] 3w-9xxx: add MSI support and misc fixes
  [SCSI] scsi_lib: use blk_rq_tagged in scsi_request_fn
  [SCSI] ibmvfc: Update driver version to 1.0.1
  [SCSI] ibmvfc: Add ADISC support
  [SCSI] ibmvfc: Miscellaneous fixes
  [SCSI] ibmvfc: Fix hang on module removal
  [SCSI] ibmvfc: Target refcounting fixes
  [SCSI] ibmvfc: Reduce unnecessary log noise
  [SCSI] sym53c8xx: free luntbl in sym_hcb_free
  [SCSI] scsi_scan.c: Release mutex in error handling code
  [SCSI] scsi_eh_prep_cmnd should save scmd->underflow
  [SCSI] sd: Support for SCSI disk (SBC) Data Integrity Field
  ...

* git://git.kernel.org/pub/scm/linux/kernel/git/hskinnemoen/avr32-2.6:
  avr32: some mmc/sd cleanups
  include/video/atmel_lcdc.h must #include <linux/workqueue.h>
  avr32: allow system timer to share interrupt to make OProfile work
  drivers/misc/atmel-ssc.c: Removed duplicated include
  avr32: Add platform data for AC97C platform device
  avr32: clean up mci platform code
  fix avr32 build errors

* 'kvm-updates-2.6.27' of git://git.kernel.org/pub/scm/linux/kernel/git/avi/kvm:
  KVM: ppc: fix invalidation of large guest pages
  KVM: s390: Fix possible host kernel bug on lctl(g) handling
  KVM: s390: Fix instruction naming for lctlg
  KVM: s390: Fix program check on interrupt delivery handling
  KVM: s390: Change guestaddr type in gaccess
  KVM: s390: Fix guest kconfig
  KVM: s390: Advertise KVM_CAP_USER_MEMORY
  KVM: ia64: Fix irq disabling leak in error handling code
  KVM: VMX: Fix undefined beaviour of EPT after reload kvm-intel.ko
  KVM: VMX: Fix bypass_guest_pf enabling when disable EPT in module parameter
  KVM: task switch: translate guest segment limit to virt-extension byte granular field
  KVM: Avoid instruction emulation when event delivery is pending
  KVM: task switch: use seg regs provided by subarch instead of reading from GDT
  KVM: task switch: segment base is linear address
  KVM: SVM: allow enabling/disabling NPT by reloading only the architecture module

* git://git.kernel.org/pub/scm/linux/kernel/git/sam/kbuild-next: (25 commits)
  setlocalversion: do not describe if there is nothing to describe
  kconfig: fix typos: "Suport" -> "Support"
  kconfig: make defconfig is no longer chatty
  kconfig: make oldconfig is now less chatty
  kconfig: speed up all*config + randconfig
  kconfig: set all new symbols automatically
  kconfig: add diffconfig utility
  kbuild: remove Module.markers during mrproper
  kbuild: sparse needs CF not CHECKFLAGS
  kernel-doc: handle/strip __init
  vmlinux.lds: move __attribute__((__cold__)) functions back into final .text section
  init: fix URL of "The GNU Accounting Utilities"
  kbuild: add arch/$ARCH/include to search path
  kbuild: asm symlink support for arch/$ARCH/include
  kbuild: support arch/$ARCH/include for tags, cscope
  kbuild: prepare headers_* for arch/$ARCH/include
  kbuild: install all headers when arch is changed
  kbuild: make clean removes *.o.* as well
  kbuild: optimize headers_* targets
  kbuild: only one call for include/ in make headers_*
  ...