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2008-10-28Merge branch 'x86-fixes-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: x86, memory hotplug: remove wrong -1 in calling init_memory_mapping() x86: keep the /proc/meminfo page count correct x86/uv: memory allocation at initialization xen: fix Xen domU boot with batched mprotect
2008-10-28[S390] s390: Fix build for !CONFIG_S390_GUEST + CONFIG_VIRTIO_CONSOLEChristian Borntraeger
The s390 kernel does not compile if virtio console is enabled, but guest support is disabled: LD .tmp_vmlinux1 arch/s390/kernel/built-in.o: In function `setup_arch': /space/linux-2.5/arch/s390/kernel/setup.c:773: undefined reference to `s390_virtio_console_init' The fix is related to commit 99e65c92f2bbf84f43766a8bf701e36817d62822 Author: Christian Borntraeger <borntraeger@de.ibm.com> Date: Fri Jul 25 15:50:04 2008 +0200 KVM: s390: Fix guest kconfig Which changed the build process to build kvm_virtio.c only if CONFIG_S390_GUEST is set. We must ifdef the prototype in the header file accordingly. Reported-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2008-10-28[S390] No more 4kb stacks.Heiko Carstens
We got a stack overflow with a small stack configuration on a 32 bit system. It just looks like as 4kb isn't enough and too dangerous. So lets get rid of 4kb stacks on 32 bit. But one thing I completely dislike about the call trace below is that just for debugging or tracing purposes sprintf gets called (cio_start_key): /* process condition code */ sprintf(dbf_txt, "ccode:%d", ccode); CIO_TRACE_EVENT(4, dbf_txt); But maybe its just me who thinks that this could be done better. <4>Kernel stack overflow. <4>Modules linked in: dm_multipath sunrpc bonding qeth_l2 dm_mod qeth ccwgroup vmur <4>CPU: 1 Not tainted 2.6.27-30.x.20081015-s390default #1 <4>Process httpd (pid: 3807, task: 20ae2df8, ksp: 1666fb78) <4>Krnl PSW : 040c0000 8027098a (number+0xe/0x348) <4> R:0 T:1 IO:0 EX:0 Key:0 M:1 W:0 P:0 AS:0 CC:0 PM:0 <4>Krnl GPRS: 00d43318 0027097c 1666f277 9666f270 <4> 00000000 00000000 0000000a ffffffff <4> 9666f270 1666f228 1666f277 1666f098 <4> 00000002 80270982 80271016 1666f098 <4>Krnl Code: 8027097e: f0340dd0a7f1 srp 3536(4,%r0),2033(%r10),4 <4> 80270984: 0f00 clcl %r0,%r0 <4> 80270986: a7840001 brc 8,80270988 <4> >8027098a: 18ef lr %r14,%r15 <4> 8027098c: a7faff68 ahi %r15,-152 <4> 80270990: 18bf lr %r11,%r15 <4> 80270992: 18a2 lr %r10,%r2 <4> 80270994: 1893 lr %r9,%r3 Modified calltrace with annotated stackframe size of each function: stackframe size | 0 304 vsnprintf+850 [0x271016] 1 72 sprintf+74 [0x271522] 2 56 cio_start_key+262 [0x2d4c16] 3 56 ccw_device_start_key+222 [0x2dfe92] 4 56 ccw_device_start+40 [0x2dff28] 5 48 raw3215_start_io+104 [0x30b0f8] 6 56 raw3215_write+494 [0x30ba0a] 7 40 con3215_write+68 [0x30bafc] 8 40 __call_console_drivers+146 [0x12b0fa] 9 32 _call_console_drivers+102 [0x12b192] 10 64 release_console_sem+268 [0x12b614] 11 168 vprintk+462 [0x12bca6] 12 72 printk+68 [0x12bfd0] 13 256 __print_symbol+50 [0x15a882] 14 56 __show_trace+162 [0x103d06] 15 32 show_trace+224 [0x103e70] 16 48 show_stack+152 [0x103f20] 17 56 dump_stack+126 [0x104612] 18 96 __alloc_pages_internal+592 [0x175004] 19 80 cache_alloc_refill+776 [0x196f3c] 20 40 __kmalloc+258 [0x1972ae] 21 40 __alloc_skb+94 [0x328086] 22 32 pskb_copy+50 [0x328252] 23 32 skb_realloc_headroom+110 [0x328a72] 24 104 qeth_l2_hard_start_xmit+378 [0x7803bfde] 25 56 dev_hard_start_xmit+450 [0x32ef6e] 26 56 __qdisc_run+390 [0x3425d6] 27 48 dev_queue_xmit+410 [0x331e06] 28 40 ip_finish_output+308 [0x354ac8] 29 56 ip_output+218 [0x355b6e] 30 24 ip_local_out+56 [0x354584] 31 120 ip_queue_xmit+300 [0x355cec] 32 96 tcp_transmit_skb+812 [0x367da8] 33 40 tcp_push_one+158 [0x369fda] 34 112 tcp_sendmsg+852 [0x35d5a0] 35 240 sock_sendmsg+164 [0x32035c] 36 56 kernel_sendmsg+86 [0x32064a] 37 88 sock_no_sendpage+98 [0x322b22] 38 104 tcp_sendpage+70 [0x35cc1e] 39 48 sock_sendpage+74 [0x31eb66] 40 64 pipe_to_sendpage+102 [0x1c4b2e] 41 64 __splice_from_pipe+120 [0x1c5340] 42 72 splice_from_pipe+90 [0x1c57e6] 43 56 generic_splice_sendpage+38 [0x1c5832] 44 48 do_splice_from+104 [0x1c4c38] 45 48 direct_splice_actor+52 [0x1c4c88] 46 80 splice_direct_to_actor+180 [0x1c4f80] 47 72 do_splice_direct+70 [0x1c5112] 48 64 do_sendfile+360 [0x19de18] 49 72 sys_sendfile64+126 [0x19df32] 50 336 sysc_do_restart+18 [0x111a1a] Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2008-10-28[S390] Change default IPL method to IPL_VM.Heiko Carstens
allyesconfig and allmodconfig built kernels have a tape IPL record. A the vmreader record makes much more sense, since hardly anybody will ever IPL a kernel from tape. So change the default. As I side effect I can test these kernels without fiddling around with the kernel config ;) Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2008-10-28[S390] appldata: unsigned ops->size cannot be negativeRoel Kluin
unsigned ops->size cannot be negative Signed-off-by: Roel Kluin <roel.kluin@gmail.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2008-10-28[S390] Fix sysdev class file creation.Heiko Carstens
Use sysdev_class_create_file() to create create sysdev class attributes instead of sysfs_create_file(). Using sysfs_create_file() wasn't a very good idea since the show and store functions have a different amount of parameters for sysfs files and sysdev class files. In particular the pointer to the buffer is the last argument and therefore accesses to random memory regions happened. Still worked surprisingly well until we got a kernel panic. Cc: stable@kernel.org Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2008-10-28[S390] pgtables: Fix race in enable_sie vs. page table opsChristian Borntraeger
The current enable_sie code sets the mm->context.pgstes bit to tell dup_mm that the new mm should have extended page tables. This bit is also used by the s390 specific page table primitives to decide about the page table layout - which means context.pgstes has two meanings. This can cause any kind of bugs. For example - e.g. shrink_zone can call ptep_clear_flush_young while enable_sie is running. ptep_clear_flush_young will test for context.pgstes. Since enable_sie changed that value of the old struct mm without changing the page table layout ptep_clear_flush_young will do the wrong thing. The solution is to split pgstes into two bits - one for the allocation - one for the current state Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2008-10-28x86, memory hotplug: remove wrong -1 in calling init_memory_mapping()Shaohua Li
Impact: fix crash with memory hotplug Shuahua Li found: | I just did some experiments on a desktop for memory hotplug and this bug | triggered a crash in my test. | | Yinghai's suggestion also fixed the bug. We don't need to round it, just remove that extra -1 Signed-off-by: Yinghai <yinghai@kernel.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-10-27x86: keep the /proc/meminfo page count correctYinghai Lu
Impact: get correct page count in /proc/meminfo found page count in /proc/meminfo is nor correct on 1G system in VirtualBox 2.0.4 # cat /proc/meminfo MemTotal: 1017508 kB MemFree: 822700 kB Buffers: 1456 kB Cached: 26632 kB SwapCached: 0 kB ... Hugepagesize: 2048 kB DirectMap4k: 4032 kB DirectMap2M: 18446744073709549568 kB with this patch get: ... DirectMap4k: 4032 kB DirectMap2M: 1044480 kB which is consistent to kernel_page_tables ---[ Low Kernel Mapping ]--- 0xffff880000000000-0xffff880000001000 4K RW PCD GLB x pte 0xffff880000001000-0xffff88000009f000 632K RW GLB x pte 0xffff88000009f000-0xffff8800000a0000 4K RW PCD GLB x pte 0xffff8800000a0000-0xffff880000200000 1408K RW GLB x pte 0xffff880000200000-0xffff88003fe00000 1020M RW PSE GLB x pmd 0xffff88003fe00000-0xffff88003fff0000 1984K RW GLB NX pte 0xffff88003fff0000-0xffff880040000000 64K pte 0xffff880040000000-0xffff888000000000 511G pud 0xffff888000000000-0xffffc20000000000 58880G pgd Signed-off-by: Yinghai Lu <yinghai@kernel.org> Acked-by: Suresh Siddha <suresh.b.siddha@intel.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-10-27MIPS: lemote/lm2e: Added io_map_base to pci controllerZhang Le
Signed-off-by: Zhang Le <r0bertz@gentoo.org> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2008-10-27MIPS: TXx9: Make firmware parameter passing more robustGeert Uytterhoeven
When booting Linux on a txx9 board with VxWorks boot loader, it crashes in prom_getenv(), as VxWorks doesn't pass firmware parameters in a0-a3 (in my case, the actual leftover values in these registers were 0x80002000, 0x80001fe0, 0x2000, and 0x20). Make the parsing of argc, argv, and envp a bit more robust by checking if argc is a number below CKSEG0, and argv/envp point to CKSEG0. Signed-off-by: Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com> Acked-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2008-10-27MIPS: Markeins: Remove unnecessary define and cleanup comments, etc.Shinya Kuribayashi
Signed-off-by: Shinya Kuribayashi <shinya.kuribayashi@necel.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2008-10-27MIPS: Markeins: Extract ll_emma2rh_* functionsShinya Kuribayashi
These functions are completely ineffective. Signed-off-by: Shinya Kuribayashi <shinya.kuribayashi@necel.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2008-10-27MIPS: Markeins: Remove runtime debug printsShinya Kuribayashi
Remove runtime db_* macros as we don't need them any more. In general, such helpers are useful for initial porting, but once approved, they are not indispensable. Signed-off-by: Shinya Kuribayashi <shinya.kuribayashi@necel.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2008-10-27MIPS: EMMA: Fold arch/mips/emma/{common,markeins}/irq*.c into markeins/irq.cShinya Kuribayashi
Current EMMA2RH irq code is mess. Before cleaning it up, gather them in one place as a first step. Signed-off-by: Shinya Kuribayashi <shinya.kuribayashi@necel.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2008-10-27MIPS: EMMA2RH: Remove emma2rh_gpio_irq_baseShinya Kuribayashi
Let's use immediate value, instead. This also saves memory footprint, and probably a little bit faster. Signed-off-by: Shinya Kuribayashi <shinya.kuribayashi@necel.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2008-10-27MIPS: EMMA2RH: Remove emma2rh_sw_irq_baseShinya Kuribayashi
Let's use immediate value, instead. This also saves memory footprint, and probably a little bit faster. Signed-off-by: Shinya Kuribayashi <shinya.kuribayashi@necel.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2008-10-27MIPS: EMMA2RH: Remove emma2rh_irq_base global variableShinya Kuribayashi
Let's use immediate value, instead. This also saves memory footprint, and probably a little bit faster. Signed-off-by: Shinya Kuribayashi <shinya.kuribayashi@necel.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2008-10-27MIPS: EMMA2RH: Remove emma2rh_sync on read operationShinya Kuribayashi
It's totally a waste of CPU cycles. Signed-off-by: Shinya Kuribayashi <shinya.kuribayashi@necel.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2008-10-27MIPS: EMMA: Move <asm/emma2rh> to <asm/emma> dirShinya Kuribayashi
We'll put all EMMA related headers there in the future. Signed-off-by: Shinya Kuribayashi <shinya.kuribayashi@necel.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2008-10-27MIPS: EMMA: Move arch/mips/emma2rh/ into arch/mips/emma/Shinya Kuribayashi
git mv arch/mips/{emma2rh,emma} and fixups Makefiles. We'll put all NEC EMMA series based machines there in the future. Signed-off-by: Shinya Kuribayashi <shinya.kuribayashi@necel.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2008-10-27MIPS: EMMA: Kconfig reorganizationShinya Kuribayashi
- Move EMMA related stuff into arch/mips/emma/Kconfig - Create CONFIG_SOC_EMMA* to handle more EMMA SoCs effectively - Rename CONFIG_MARKEINS into CONFIG_NEC_MARKEINS Signed-off-by: Shinya Kuribayashi <shinya.kuribayashi@necel.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2008-10-27MIPS: Add CONFIG_CPU_R5500 for NEC VR5500 series processorsShinya Kuribayashi
We already have sufficient infrastructure to support VR5500 and VR5500A series processors. Here's a Makefile support to make it selectable by ports, and enable it for NEC EMMA2RH Markeins board. This patch also fixes a confused target help, and adds 1Gb PageMask bits supported by VR5500 and its variants. Signed-off-by: Shinya Kuribayashi <shinya.kuribayashi@necel.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2008-10-27MIPS: RB532: Disable the right devicePhil Sutter
Signed-off-by: Florian Fainelli <florian@openwrt.org> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2008-10-27MIPS: Add support for NXP PNX833x (STB222/5) into linux kernelDaniel Laird
The following patch add support for the NXP PNX833x SOC. More specifically it adds support for the STB222/5 variant. It fixes the vectored interrupt issue. Signed-off-by: daniel.j.laird <daniel.j.laird@nxp.com> Signed-off-by: Jason Wessel <jason.wessel@windriver.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2008-10-27MIPS: TXx9: CONFIG_TOSHIBA_RBTX4939 spellingGeert Uytterhoeven
Fix a typo in the comment for the TOSHIBA_RBTX4939 config option Signed-off-by: Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com> Acked-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2008-10-27MIPS: Fix KGDB build errorYoichi Yuasa
In file included from include/linux/ptrace.h:49, from arch/mips/kernel/kgdb.c:25: /home/yuasa/src/linux/test/mips/linux/arch/mips/include/asm/ptrace.h:123: error: expected declaration specifiers or '...' before '__s64' /home/yuasa/src/linux/test/mips/linux/arch/mips/include/asm/ptrace.h:124: error: expected declaration specifiers or '...' before '__s64' /home/yuasa/src/linux/test/mips/linux/arch/mips/include/asm/ptrace.h:126: error: expected declaration specifiers or '...' before '__u32' /home/yuasa/src/linux/test/mips/linux/arch/mips/include/asm/ptrace.h:127: error: expected declaration specifiers or '...' before '__u32' make[1]: *** [arch/mips/kernel/kgdb.o] Error 1 Signed-off-by: Yoichi Yuasa <yoichi_yuasa@tripeaks.co.jp> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2008-10-27MIPS: IP22: ip22-int.c header file weeding.Ralf Baechle
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2008-10-27MIPS: IP22: Small cleanupsDmitri Vorobiev
The following functions disable_local1_irq() disable_local2_irq() disable_local3_irq() are needlessly defined global, so make them static. While at it, fix a whitespace error in the same file. Signed-off-by: Dmitri Vorobiev <dmitri.vorobiev@movial.fi> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2008-10-27MIPS: RBTX4939: Add smc91x supportAtsushi Nemoto
Add smc91x platform device to RBTX4939 board and some hacks for big endian. Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2008-10-27MIPS: TXx9: 7 segment LED supportAtsushi Nemoto
Add sysfs interface for 7 segment LED and implement access routine for RBTX4939. Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2008-10-27MIPS: Alchemy: Wire up SD controller on DB/PB1200 boards.Manuel Lauss
Add au1xmmc platform data for PB1200/DB1200 boards and wire up the 2 SD controllers for them. Signed-off-by: Manuel Lauss <mano@roarinelk.homelinux.net> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2008-10-27MIPS: RB532: Set gpio interrupt status and level for CompactFlashFlorian Fainelli
This patch sets the correct interrupt status and level in order to get the CompactFlash adapter working. Signed-off-by: Florian Fainelli <florian@openwrt.org> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2008-10-27MIPS: RB532: Fix build errorAdrian Bunk
mips/pci/fixup-rc32434.c must #include <asm/mach-rc32434/irq.h> This patch fixes the following compile error caused by commit 606a083b1e1a357cb66454e4581b80f1a67d8368 (MIPS: RB532: Cleanup the headers again): <-- snip --> ... CC arch/mips/pci/fixup-rc32434.o arch/mips/pci/fixup-rc32434.c: In function 'pcibios_map_irq': arch/mips/pci/fixup-rc32434.c:46: error: 'GROUP4_IRQ_BASE' undeclared (first use in this function) arch/mips/pci/fixup-rc32434.c:46: error: (Each undeclared identifier is reported only once arch/mips/pci/fixup-rc32434.c:46: error: for each function it appears in.) make[2]: *** [arch/mips/pci/fixup-rc32434.o] Error 1 <-- snip --> A virtually identical patch was also submitted by Yoichi Yuasa <yoichi_yuasa@tripeaks.co.jp>. Signed-off-by: Adrian Bunk <bunk@kernel.org> Acked-by: Florian Fainelli <florian@openwrt.org> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2008-10-27MIPS: Fix KGDB build errorDavid Daney
<asm/ptrace.h> is exported to userland so can't include <linux/ptrace.h>, so replace the C99 types with their basic C type equivalents. Bug originally reported and initial patch by Yoichi Yuasa <yoichi_yuasa@tripeaks.co.jp>. Signed-off-by: David Daney <ddaney@caviumnetworks.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2008-10-27MIPS: Set ENOSYS to errno on illegal system call number for syscall(2)Atsushi Nemoto
Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2008-10-27MIPS: Set positive error number to errno on illegal_syscallAtsushi Nemoto
Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2008-10-27MIPS: SMP: Don't reenable interrupts in stop_this_cpu; use WAIT instruction.Ralf Baechle
Noticed by Anirban Sinha <ASinha@zeugmasystems.com>; patch by me. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2008-10-27MIPS: Don't unmap the memory for dma_sync*.David Daney
We were getting away with this for so long only because the only platform with a non-empty plat_unmap_dma_mem() doesn't call dma_sync_sg_for_cpu() and dma_sync_sg_for_device() from its commonly used drivers. Signed-off-by: David Daney <ddaney@caviumnetworks.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2008-10-27MIPS: Fix debugfs_create_*'s error checking method for mips/kernel/Zhaolei
debugfs_create_*() returns NULL on error. Make its callers return -ENODEV on error. Signed-off-by: Zhao Lei <zhaolei@cn.fujitsu.com> Acked-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2008-10-27MIPS: Fix debugfs_create_*'s error checking method for arch/mips/math-emu/Zhaolei
debugfs_create_*() returns NULL on error. Make its caller debugfs_fpuemu return -ENODEV on error. Signed-off-by: Zhao Lei <zhaolei@cn.fujitsu.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2008-10-27x86/uv: memory allocation at initializationCliff Wickman
Impact: on SGI UV platforms, fix boot crash UV initialization is currently called too late to call alloc_bootmem_pages(). The current sequence is: start_kernel() mem_init() free_all_bootmem() <--- discard of bootmem rest_init() kernel_init() smp_prepare_cpus() native_smp_prepare_cpus() uv_system_init() <--- uses alloc_bootmem_pages() It should be calling kmalloc(). Signed-off-by: Cliff Wickman <cpw@sgi.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-10-27xen: fix Xen domU boot with batched mprotectChris Lalancette
Impact: fix guest kernel boot crash on certain configs Recent i686 2.6.27 kernels with a certain amount of memory (between 736 and 855MB) have a problem booting under a hypervisor that supports batched mprotect (this includes the RHEL-5 Xen hypervisor as well as any 3.3 or later Xen hypervisor). The problem ends up being that xen_ptep_modify_prot_commit() is using virt_to_machine to calculate which pfn to update. However, this only works for pages that are in the p2m list, and the pages coming from change_pte_range() in mm/mprotect.c are kmap_atomic pages. Because of this, we can run into the situation where the lookup in the p2m table returns an INVALID_MFN, which we then try to pass to the hypervisor, which then (correctly) denies the request to a totally bogus pfn. The right thing to do is to use arbitrary_virt_to_machine, so that we can be sure we are modifying the right pfn. This unfortunately introduces a performance penalty because of a full page-table-walk, but we can avoid that penalty for pages in the p2m list by checking if virt_addr_valid is true, and if so, just doing the lookup in the p2m table. The attached patch implements this, and allows my 2.6.27 i686 based guest with 768MB of memory to boot on a RHEL-5 hypervisor again. Thanks to Jeremy for the suggestions about how to fix this particular issue. Signed-off-by: Chris Lalancette <clalance@redhat.com> Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Cc: Chris Lalancette <clalance@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-10-23Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6Linus Torvalds
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6: math-emu: Fix thinko in _FP_DIV math-emu: Fix signalling of underflow and inexact while packing result. sparc: Add checkstack support sparc: correct section of current_pc() sparc: correct section of apc_no_idle sparc64: Fix race in arch/sparc64/kernel/trampoline.S
2008-10-23Merge git://git.kernel.org/pub/scm/linux/kernel/git/bart/ide-2.6Linus Torvalds
* git://git.kernel.org/pub/scm/linux/kernel/git/bart/ide-2.6: ide: drivers/ide/generic.c -> drivers/ide/ide-pci-generic.c ide-disk: set non-rotational queue flag for SSD and CF devices ide-cd: add TEAC CD-224E to the NO_AUTOCLOSE list ide: Add tx4938ide driver (v2) TXx9: Add TX4938 ATA support (v3) ide: Add tx4939ide driver (v6) ide: two more pci_ioremap_bar() conversions pci: use pci_ioremap_bar() in drivers/ide sgiioc4: use ide_host_add() (take 2) sgiioc4: fix error cleanup path (take 2)
2008-10-23Merge branch 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-armLinus Torvalds
* 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm: [ARM] pxa: corgi backlight driver should not select ssp drivers [ARM] 5321/1: Kirkwood: fix typo in Makefile [ARM] 5320/1: fix assembly constraints in implementation of do_div() [ARM] 5318/1: Swap the PRRR and NMRR values in proc-v7.S [ARM] 5316/1: AT91: oops (regression) fix on gpio irq [ARM] msm: vreg interface to msm7k pmic [ARM] msm: dma: various basic dma improvements and bugfixes [ARM] msm: clock: provide clk_*() api support for [ARM] msm: clean up iomap and devices [ARM] msm: add proc_comm support, necessary for clock and power control [ARM] msm: rename ARCH_MSM7X00A to ARCH_MSM [ARM] pxa/spitz: fix unbalance parenthesis in header file spitz.h [ARM] pxa: update {corgi,spitz}_defconfig to favor SPI-based drivers [ARM] pxa: fix the corgi_ssp.c dependency issue in {corgi,spitz}_defconfig Revert "[ARM] pxa/corgi: remove now unused corgi_ssp.c and corgi_lcd.c"
2008-10-23Merge branch 'for-linus' of git://git.o-hand.com/linux-rpurdie-backlightLinus Torvalds
* 'for-linus' of git://git.o-hand.com/linux-rpurdie-backlight: backlight: Add driver for Tabletkiosk Sahara TouchIT-213 Tablet PC backlight: da903x: Add backlight driver for DA9030/DA9034 tosa: add support for bl/lcd driver backlight: add support for Sharp SL-6000 LCD and backlight drivers
2008-10-23TXx9: Add TX4938 ATA support (v3)Atsushi Nemoto
Add a helper routine to register tx4938ide driver and use it on RBTX4938 board. Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp> Acked-by: Ralf Baechle <ralf@linux-mips.org> Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-10-23Merge branch 'x86-fixes-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: x86: fix section mismatch warning - apic_x2apic_phys x86: fix section mismatch warning - apic_x2apic_cluster x86: fix section mismatch warning - apic_x2apic_uv_x x86: fix section mismatch warning - apic_physflat x86: fix section mismatch warning - apic_flat x86: memtest fix use of reserve_early() x86 syscall.h: fix argument order x86/tlb_uv: remove strange mc146818rtc include x86: remove redundant KERN_DEBUG on pr_debug x86: do_boot_cpu - check if we have ESR register x86: MAINTAINERS change for AMD microcode patch loader x86/proc: fix /proc/cpuinfo cpu offline bug x86: call dmi-quirks for HP Laptops after early-quirks are executed x86, kexec: fix hang on i386 when panic occurs while console_sem is held MCE: Don't run 32bit machine checks with interrupts on x86: SB600: skip IRQ0 override if it is not routed to INT2 of IOAPIC x86: make variables static
2008-10-23Merge branch 'proc' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/adobriyan/proc * 'proc' of git://git.kernel.org/pub/scm/linux/kernel/git/adobriyan/proc: (35 commits) proc: remove fs/proc/proc_misc.c proc: move /proc/vmcore creation to fs/proc/vmcore.c proc: move pagecount stuff to fs/proc/page.c proc: move all /proc/kcore stuff to fs/proc/kcore.c proc: move /proc/schedstat boilerplate to kernel/sched_stats.h proc: move /proc/modules boilerplate to kernel/module.c proc: move /proc/diskstats boilerplate to block/genhd.c proc: move /proc/zoneinfo boilerplate to mm/vmstat.c proc: move /proc/vmstat boilerplate to mm/vmstat.c proc: move /proc/pagetypeinfo boilerplate to mm/vmstat.c proc: move /proc/buddyinfo boilerplate to mm/vmstat.c proc: move /proc/vmallocinfo to mm/vmalloc.c proc: move /proc/slabinfo boilerplate to mm/slub.c, mm/slab.c proc: move /proc/slab_allocators boilerplate to mm/slab.c proc: move /proc/interrupts boilerplate code to fs/proc/interrupts.c proc: move /proc/stat to fs/proc/stat.c proc: move rest of /proc/partitions code to block/genhd.c proc: move /proc/cpuinfo code to fs/proc/cpuinfo.c proc: move /proc/devices code to fs/proc/devices.c proc: move rest of /proc/locks to fs/locks.c ...
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