Commit Graph

3008 Commits

Author SHA1 Message Date
Linus Torvalds
9418d5dc9b Merge branch 'release' of git://lm-sensors.org/kernel/mhoffman/hwmon-2.6
* 'release' of git://lm-sensors.org/kernel/mhoffman/hwmon-2.6:
  hwmon: (i5k_amb) Convert macros to C functions
  hwmon: (w83781d) Add missing curly braces
  hwmon: (abituguru3) Identify ABit IP35 Pro as such
  hwmon: (f75375s) pwmX_mode sysfs files writable for f75375 variant
  hwmon: (f75375s) On n2100 systems, set fans to full speed on boot
  hwmon: (f75375s) Allow setting up fans with platform_data
  hwmon: (f75375s) Add new style bindings
  hwmon: (lm70) Convert semaphore to mutex
  hwmon: (applesmc) Add support for Mac Pro 2 x Quad-Core
  hwmon: (abituguru3) Add support for 2 new motherboards
  hwmon: (ibmpex) Change printk to dev_{info,err} macros
  hwmon: (i5k_amb) New memory temperature sensor driver
  hwmon: (f75375s) fix pwm mode setting
  hwmon: (ibmpex.c) fix NULL dereference
  hwmon: (sis5595) Split sis5595_attributes_opt
  hwmon: (sis5595) Add individual alarm files
  hwmon: (w83627hf) push nr+1 offset into *_REG_FAN macros and simplify
  hwmon: (w83627hf) hoist nr-1 offset out of show-store-temp-X
  hwmon: Add power meter spec to Documentation/hwmon/sysfs-interface
2007-11-13 09:09:36 -08:00
Adrian Bunk
57ce45dd16 [NET]: Remove references to net-modules.txt.
When I removed net-modules.txt because it only contained ancient
information I missed that many Kconfig entries pointed to this ancient
information.

Signed-off-by: Adrian Bunk <bunk@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-11-12 21:03:58 -08:00
Rusty Russell
42b36cc0ce virtio: Force use of power-of-two for descriptor ring sizes
The virtio descriptor rings of size N-1 were nicely set up to be
aligned to an N-byte boundary.  But as Anthony Liguori points out, the
free-running indices used by virtio require that the sizes be a power
of 2, otherwise we get problems on wrap (demonstrated with lguest).

So we replace the clever "2^n-1" scheme with a simple "align to page
boundary" scheme: this means that all virtio rings take at least two
pages, but it's safer than guessing cache alignment.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2007-11-12 13:59:40 +11:00
Anthony Liguori
1200e646ae lguest: Fix lguest virtio-blk backend size computation
This seems like an obvious typo but it's worked in the past because the virtio
blk frontend just ignores the length field on completion.

Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2007-11-12 13:59:26 +11:00
Linus Torvalds
c4888f9ffa Merge branch 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc
* 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc: (37 commits)
  [POWERPC] EEH: Make sure warning message is printed
  [POWERPC] Make altivec code in swsusp_32.S depend on CONFIG_ALTIVEC
  [POWERPC] windfarm: Fix windfarm thread freezer interaction
  [POWERPC] Fix si_addr value on low level hash failures
  [POWERPC] Refresh ppc64_defconfig and enable pasemi-related options
  [POWERPC] pasemi: Update defconfig
  [POWERPC] iSeries: Fix ref counting in vio setup
  [POWERPC] ] Fix memset size error
  [POWERPC] Fix link errors for allyesconfig
  [POWERPC] iSeries_init_IRQ non-PCI tidy
  [POWERPC] Change fallocate to match unistd.h on powerpc
  [POWERPC] EEH: Avoid crash on null device
  [POWERPC] EEH: Drivers that need reset trump others
  [POWERPC] EEH: Clean up comments
  [POWERPC] Fix off-by-one error in setting decrementer on Book E/4xx (v2)
  [POWERPC] Fix switch_slb handling of 1T ESID values
  [POWERPC] Fix build failure when CONFIG_VIRT_CPU_ACCOUNTING is not defined
  [POWERPC] Include udbg.h when using udbg_printf
  [POWERPC] Fix cache line vs. block size confusion
  [POWERPC] Fix sysctl table check failure on PowerMac
  ...
2007-11-09 15:16:52 -08:00
Darrick J. Wong
38fb56a223 hwmon: Add power meter spec to Documentation/hwmon/sysfs-interface
Update the hwmon sysfs interface documentation to include a specification
for power meters.

Signed-off-by: Darrick J. Wong <djwong@us.ibm.com>
Acked-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Mark M. Hoffman <mhoffman@lightlink.com>
2007-11-08 08:42:45 -05:00
Paul Mackerras
688016f4e2 Merge branch 'for-2.6.24' of master.kernel.org:/pub/scm/linux/kernel/git/jwboyer/powerpc-4xx into merge 2007-11-08 14:28:14 +11:00
Benjamin Herrenschmidt
20474abda6 [POWERPC] Fix cache line vs. block size confusion
We had an historical confusion in the kernel between cache line
and cache block size. The former is an implementation detail of
the L1 cache which can be useful for performance optimisations,
the later is the actual size on which the cache control
instructions operate, which can be different.

For some reason, we had a weird hack reading the right property
on powermac and the wrong one on any other 64 bits (32 bits is
unaffected as it only uses the cputable for cache block size
infos at this stage).

This fixes the booting-without-of.txt documentation to mention
the right properties, and fixes the 64 bits initialization code
to look for the block size first, with a fallback to the line
size if the property is missing.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-11-08 14:15:30 +11:00
Adrian Bunk
c183783e28 [NET]: Remove Documentation/networking/pt.txt
There's no no point in keeping documentation for a driver that was
removed many years ago.

Signed-off-by: Adrian Bunk <bunk@kernel.org>
Acked-by: Alan Cox <alan@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-11-07 04:15:08 -08:00
Adrian Bunk
e8b2cadde6 [NET]: Remove Documentation/networking/routing.txt
This file is so outdated that I can't see any value in keeping it.

Signed-off-by: Adrian Bunk <bunk@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-11-07 04:15:07 -08:00
Adrian Bunk
17a83c75ad [NET]: Remove Documentation/networking/ncsa-telnet
Newsflash: There once was a version of NCSA telnet that had some bug.

Spotted by Pekka Pietikainen.

Signed-off-by: Adrian Bunk <bunk@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-11-07 04:15:07 -08:00
Adrian Bunk
915590cf64 [NET]: Remove comx driver docs.
The drivers have already been removed 3.5 years ago.

Signed-off-by: Adrian Bunk <bunk@kernel.org>
Acked-by: Alan Cox <alan@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-11-07 04:15:06 -08:00
Adrian Bunk
240e546445 [NET]: Remove Documentation/networking/Configurable
After more than 11 years this file does no longer contain much useful
information.

Signed-off-by: Adrian Bunk <bunk@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-11-07 04:15:05 -08:00
Mathieu Desnoyers
e1265205c0 local_t Documentation update
Grant Grundler was asking for more detail about correct usage of local
atomic operations and suggested adding the resulting summary to
local_ops.txt.

"Please add a bit more detail. If DaveM is correct (he normally is), then
there must be limits on how the local_t can be used in the kernel process
and interrupt contexts. I'd like those rules spelled out very clearly
since it's easy to get wrong and tracking down such a bug is quite painful."

Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>
Signed-off-by: Grant Grundler <grundler@parisc-linux.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-11-05 15:12:32 -08:00
Mauro Carvalho Chehab
0180bf3279 V4L/DVB (6390): Updates missing entries at CARDLIST.em28xx
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2007-11-04 21:41:15 -02:00
Grant Likely
7ae0fa49c6 [POWERPC] Device tree bindings for Xilinx devices
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Acked-by: Stephen Neuendorffer <stephen.neuendorffer@xilinx.com>
Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
2007-11-01 07:11:18 -05:00
Keiichi Kii
710701c8fc add SubmittingPatches to Documentation/ja_JP
This patch adds SubmittingPatches translated into Japanese to 
Documentation/ja_JP directory.

I attach the patch because there is a possibility that MUA 
will change the character encoding sometimes.

Signed-off-by: Keiichi KII <k-keiichi@bx.jp.nec.com>
Cc: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-10-30 21:52:34 -07:00
Keiichi Kii
5ab3bd5785 fix typo in SubmittingPatches
Fix typo.

Signed-off-by: Keiichi Kii <k-keiichi@bx.jp.nec.com>
Cc: Andy Whitcroft <apw@shadowen.org>
Cc: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-10-30 21:52:33 -07:00
Linus Torvalds
c8593884f2 Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6
* 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6: (26 commits)
  cpuidle: remove unused exports
  acpi: remove double mention of Support for ACPI option
  ACPI: use select POWER_SUPPLY for AC, BATTERY and SBS
  ACPI: Battery: Allow extract string from integer
  ACPI: battery: Support for non-spec name for LiIon technology
  ACPI: battery: register power_supply subdevice only when battery is present
  suspend: MAINTAINERS update
  ACPI: update MAINTAINERS
  fujitsu-laptop.c: remove dead code
  cpuidle: unexport tick_nohz_get_sleep_length
  ACPI: battery: Update battery information upon sysfs read.
  fujitsu-laptop: make 2 functions static
  ACPI: EC: fix use-after-free
  ACPI: battery: remove dead code
  ACPI: Fan: Drop force_power_state acpi_device option
  ACPI: Fan: fan device does not need own structure
  ACPI: power: don't cache power resource state
  ACPI: EC: Output changes to operational mode
  ACPI: EC: Add workaround for "optimized" controllers
  ACPI: EC: Don't re-enable GPE for each transaction.
  ...
2007-10-29 21:46:09 -07:00
Huang, Ying
aa69432a68 x86 boot: document for 32 bit boot protocol
This patch documents the 32-bit boot protocol of x86. It has been used
by Kexec and LinuxBIOS. This patch is based on the proposal of Peter
Anvin.

Signed-off-by: Huang Ying <ying.huang@intel.com>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2007-10-30 00:22:22 +01:00
Len Brown
14f7d720bb Pull alexey-fixes into release branch 2007-10-29 17:30:21 -04:00
Kristen Carlson Accardi
ca77329fb7 [libata] Link power management infrastructure
Device Initiated Power Management, which is defined
in SATA 2.5 can be enabled for disks which support it.
This patch enables DIPM when the user sets the link
power management policy to "min_power".

Additionally, libata drivers can define a function
(enable_pm) that will perform hardware specific actions to
enable whatever power management policy the user set up
for Host Initiated Power management (HIPM).
This power management policy will be activated after all
disks have been enumerated and intialized.  Drivers should
also define disable_pm, which will turn off link power
management, but not change link power management policy.

Documentation/scsi/link_power_management_policy.txt has additional
information.

Signed-off-by:  Kristen Carlson Accardi <kristen.c.accardi@intel.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2007-10-29 11:00:35 -04:00
Jamal Hadi Salim
d892afe2ca [NET]: Document some simple rules for actions
This patch adds documentation on what is expected of an
action which branches away from the action-graph or when it
needs to trample on actins. It also describes what is expected of
users of such actions.

Signed-off-by: Jamal Hadi Salim <hadi@cyberus.ca>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-10-26 02:49:09 -07:00
Ryousei Takano
564262c1f0 [TCP]: Fix inconsistency of terms.
Fix inconsistency of terms:
1) D-SACK
2) F-RTO

Signed-off-by: Ryousei Takano <takano-ryousei@aist.go.jp>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-10-25 23:03:52 -07:00
Linus Torvalds
2c75055703 Merge git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-lguest
* git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-lguest:
  lguest: documentation update
  lguest: Add to maintainers file.
  lguest: build fix
  lguest: clean up lguest_launcher.h
  lguest: remove unused "wake" element from struct lguest
  lguest: use defines from x86 headers instead of magic numbers
  lguest: example launcher header cleanup.
2007-10-25 15:38:19 -07:00
Linus Torvalds
2304c3ac36 Merge branch 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jgarzik/netdev-2.6
* 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jgarzik/netdev-2.6:
  [netdrvr] forcedeth: add MCP77 device IDs
  rndis_host: reduce MTU instead of refusing to talk to devices with low max packet size
  cpmac: update to new fixed phy driver interface
  cpmac: convert to napi_struct interface
  cpmac: use print_mac() instead of MAC_FMT
  natsemi: fix oops, link back netdevice from private-struct
  ehea: fix port_napi_disable/enable
  bonding/bond_main.c: fix cut'n'paste error
  make bonding/bond_main.c:bond_deinit() static
  drivers/net/ipg.c: cleanups
  remove Documentation/networking/net-modules.txt
2007-10-25 15:19:59 -07:00
Alexey Starikovskiy
7843932ac4 ACPI: EC: auto select interrupt mode
Start in POLL mode, and if we receive confirmation GPE,
switch to INT mode.
If confirmations are not sent, switch back to POLL.

Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Signed-off-by: Len Brown <len.brown@intel.com>
2007-10-25 16:31:31 -04:00
Adrian Bunk
4316b450e8 remove Documentation/networking/net-modules.txt
According to git, the only one who touched this file during the last
5 years was me when removing drivers...

modinfo offers less ancient information.

Signed-off-by: Adrian Bunk <bunk@kernel.org>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: Paul Gortmaker <paul.gortmaker@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-10-25 03:31:13 -04:00
Rusty Russell
e1e72965ec lguest: documentation update
Went through the documentation doing typo and content fixes.  This
patch contains only comment and whitespace changes.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2007-10-25 15:02:50 +10:00
Rusty Russell
db24e8c2ef lguest: example launcher header cleanup.
Now the kernel headers are clean for userspace export, we don't need
to typedef kernel types before including them.  We also don't need
pci_ids.h (that was from an earlier virtio draft).

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2007-10-25 14:09:25 +10:00
Mel Gorman
b3da2a73ff sched: document profile=sleep requiring CONFIG_SCHEDSTATS
profile=sleep only works if CONFIG_SCHEDSTATS is set. This patch notes
the limitation in Documentation/kernel-parameters.txt and prints a
warning at boot-time if profile=sleep is used without CONFIG_SCHEDSTAT.

Signed-off-by: Mel Gorman <mel@csn.ul.ie>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2007-10-24 18:23:50 +02:00
Linus Torvalds
a7aed1c2dc Merge ssh://master.kernel.org/pub/scm/linux/kernel/git/x86/linux-2.6-x86
* ssh://master.kernel.org/pub/scm/linux/kernel/git/x86/linux-2.6-x86: (35 commits)
  x86: Add HPET force support for MCP55 (nForce 5) chipsets
  x86: Force enable HPET for CK804 (nForce 4) chipsets
  x86: clean up setup.h and the boot code
  x86: Save registers in saved_context during suspend and hibernation
  x86: merge setup_32/64.h
  x86: merge signal_32/64.h
  x86: merge required-features.h
  x86: merge sigcontext_32/64.h
  x86: merge msr_32/64.h
  x86: merge mttr_32/64.h
  x86: merge statfs_32/64.h
  x86: merge stat_32/64.h
  x86: merge shmbuf_32/64.h
  x86: merge ptrace_32/64.h
  x86: merge msgbuf_32/64.h
  x86: merge elf_32/64.h
  x86: merge byteorder_32/64.h
  x86: whitespace cleanup of mce_64.c
  x86: consolidate the cpu/ related code usage
  x86: prepare consolidation of cpu/ related code usage
  ...
2007-10-23 16:38:03 -07:00
Linus Torvalds
1212663fba Merge master.kernel.org:/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6
* master.kernel.org:/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6: (39 commits)
  [SCSI] qla2xxx: Update version number to 8.02.00-k5.
  [SCSI] qla2xxx: Correct display of ISP serial-number.
  [SCSI] qla2xxx: Correct residual-count handling discrepancies during UNDERRUN handling.
  [SCSI] qla2xxx: Make driver (mostly) legacy I/O port free.
  [SCSI] qla2xxx: Fix issue where final flash-segment updates were falling into the slow-path write handler.
  [SCSI] qla2xxx: Handle unaligned sector writes during NVRAM/VPD updates.
  [SCSI] qla2xxx: Defer explicit interrupt-polling processing to init-time scenarios.
  [SCSI] qla2xxx: Resync with latest HBA SSID specification -- 2.2u.
  [SCSI] sym53c8xx: Remove sym_xpt_async_sent_bdr
  [SCSI] sym53c8xx: Remove pci_dev pointer from sym_shcb
  [SCSI] sym53c8xx: Make interrupt handler capable of returning IRQ_NONE
  [SCSI] sym53c8xx: Get rid of IRQ_FMT and IRQ_PRM
  [SCSI] sym53c8xx: Use scmd_printk where appropriate
  [SCSI] sym53c8xx: Simplify DAC DMA handling
  [SCSI] sym53c8xx: Remove tag_ctrl module parameter
  [SCSI] sym53c8xx: Remove io_ws, mmio_ws and ram_ws elements
  [SCSI] sym53c8xx: Remove ->device_id
  [SCSI] sym53c8xx: Use pdev->revision
  [SCSI] sym53c8xx: PCI Error Recovery support
  [SCSI] sym53c8xx: Stop overriding scsi_done
  ...
2007-10-23 16:37:29 -07:00
Linus Torvalds
af76bbabbd Merge git://git.kernel.org/pub/scm/linux/kernel/git/wim/linux-2.6-watchdog
* git://git.kernel.org/pub/scm/linux/kernel/git/wim/linux-2.6-watchdog:
  [WATCHDOG] Documentation/watchdog/src/watchdog-simple.c: improve this code
  [WATCHDOG] AR7: watchdog timer
  [WATCHDOG] Linux kernel IPC SBC Watchdog Timer driver
2007-10-23 16:36:30 -07:00
Carlos Corbacho
d79a5f80dc x86: Force enable HPET for CK804 (nForce 4) chipsets
This patch adds a quirk from LinuxBIOS to force enable HPET on
the nVidia CK804 (nForce 4) chipset.

This quirk can very likely support more than just nForce 4
(LinuxBIOS use the same code for nForce 5), and possibly nForce 3,
but I don't have those chipsets, so cannot add and test them.

Tested on an Abit KN9 (CK804).

Signed-off-by: Carlos Corbacho <cathectic@gmail.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

 Documentation/kernel-parameters.txt |    3 +-
 arch/x86/kernel/quirks.c            |   37 +++++++++++++++++++++++++++++++++++-
 2 files changed, 38 insertions(+), 2 deletions(-)
2007-10-23 22:37:25 +02:00
WANG Cong
06063e26bc [WATCHDOG] Documentation/watchdog/src/watchdog-simple.c: improve this code
Make some improvements for Documentation/watchdog/src/watchdog-simple.c.

Signed-off-by: WANG Cong <xiyou.wangcong@gmail.com>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2007-10-23 20:35:27 +00:00
Matthew Wilcox
a44131b35e [SCSI] sym53c8xx: Remove tag_ctrl module parameter
With sysfs making these options tunable at runtime, there's no
justification for keeping this horrendously complex specification
string around.

Signed-off-by: Matthew Wilcox <willy@linux.intel.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2007-10-23 15:11:57 -04:00
Eric Van Hensbergen
b530cc7940 9p: add virtio transport
This adds a transport to 9p for communicating between guests and a host
using a virtio based transport.

Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>
2007-10-23 13:47:31 -05:00
Rusty Russell
43d33b21a0 Use "struct boot_params" in example launcher
Now that the "struct boot_params" is userspace accessible, we don't need
magic numbers.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2007-10-23 15:49:57 +10:00
Rusty Russell
5bbf89fc26 Loading bzImage directly.
Now arch/i386/boot/compressed/head.S understands the hardware_platform field,
we can directly execute bzImages.  No more horrific unpacking code.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2007-10-23 15:49:57 +10:00
Rusty Russell
814a0e5cdf Revert lguest magic and use hook in head.S
Version 2.07 of the boot protocol uses 0x23C for the hardware_subarch
field, that for lguest is "1".  This allows us to use the standard
boot entry point rather than the "GenuineLguest" string hack.

The standard entry point also clears the BSS and copies the boot parameters
and commandline for us, saving more code.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2007-10-23 15:49:57 +10:00
Chris Malley
1f5a29022a Update lguest documentation to reflect the new virtual block device name.
Signed-off-by: Chris Malley <mail@chrismalley.co.uk>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2007-10-23 15:49:57 +10:00
Rusty Russell
56ae43dfe2 Example launcher handle guests not being ready for input
We currently discard console and network input when the guest has no
input buffers.  This patch changes that, so that we simply stop
listening to that fd until the guest refills its input buffers.

This is particularly important because hvc_console without interrupts
does backoff polling and so often lose characters if we discard.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2007-10-23 15:49:56 +10:00
Rusty Russell
17cbca2ba3 Update example launcher for virtio
Implements virtio-based console, network and block servers.  The block
server uses a thread so it's async, which is an improvement over the
old synchronous implementation (but a little more complex).

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2007-10-23 15:49:56 +10:00
Rusty Russell
47436aa4ad Boot with virtual == physical to get closer to native Linux.
1) This allows us to get alot closer to booting bzImages.

2) It means we don't have to know page_offset.

3) The Guest needs to modify the boot pagetables to create the
   PAGE_OFFSET mapping before jumping to C code.

4) guest_pa() walks the page tables rather than using page_offset.

5) We don't use page_offset to figure out whether to emulate: it was
   always kinda quesationable, and won't work for instructions done
   before remapping (bzImage unpacking in particular).

6) We still want the kernel address for tlb flushing: have the initial
   hypercall give us that, too.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2007-10-23 15:49:54 +10:00
Jes Sorensen
511801dc31 Change example launcher to use unsigned long not u32
Apply Clue 2x4 to lguest userland<->kernel handling code and the
lguest launcher. Pointers are not to be passed in u32's!

Basic rule of thumb: Anything passing u32's back and forth should be
passing unsigned longs to be portable to 64 bit archs.

For those who forgotten already, I repeat: NO POINTERS IN u32!

Signed-off-by: Jes Sorensen <jes@sgi.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2007-10-23 15:49:52 +10:00
Rusty Russell
3c6b5bfa3c Introduce guest mem offset, static link example launcher
In order to avoid problematic special linking of the Launcher, we give
the Host an offset: this means we can use any memory region in the
Launcher as Guest memory rather than insisting on mmap() at 0.

The result is quite pleasing: a number of casts are replaced with
simple additions.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2007-10-23 15:49:50 +10:00
Ronald G. Minnich
6649bb7af6 Accept elf files that are valid but have sections that can not be mmap'ed for some reason.
Plan9 kernel binaries don't neatly align their ELF sections to our
page boundaries.

Signed-off-by: Ronald G. Minnich <rminnich@gmail.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2007-10-23 15:49:50 +10:00
Rusty Russell
b45d8cb054 Make lguest_launcher.h types userspace-friendly
lguest_launcher.h uses "u32" not "__u32", which sets a bad example.  Fix that,
and include <linux/types.h>.

This means we need to use -I on the Launcher build line so types.h is found.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2007-10-23 15:49:49 +10:00
Rusty Russell
9653c4aff9 lguest.txt update
o Describe the new split configurations
o Highlight code documentation in drivers/lguest/README
o Point out necessity of having a getty on /dev/hvc0
o Remove gratuitous "m" in example
o Don't discuss I/O model here, stick to user documentation.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2007-10-23 15:49:48 +10:00