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* Merge master.kernel.org:/home/rmk/linux-2.6-armLinus Torvalds2006-05-11
|\ | | | | | | | | | | | | | | * master.kernel.org:/home/rmk/linux-2.6-arm: [ARM] 3508/1: Update collie defconfig [ARM] Fix thread struct allocator for SMP case [ARM] Update mach-types [ARM] Update versatile_defconfig
| * [ARM] 3508/1: Update collie defconfigPavel Machek2006-05-09
| | | | | | | | | | | | | | | | | | | | Patch from Pavel Machek Update collie defconfig to something that can bring closer-to-working system to its user. Signed-off-by: Pavel Machek <pavel@suse.cz> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * [ARM] Fix thread struct allocator for SMP caseRussell King2006-05-09
| | | | | | | | | | | | | | | | The ARM thread struct allocator is racy on SMP systems. Fix it by turning it into a per-cpu based allocator. This also allows keeps the cache cache warm for thread structs and kernel stacks. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * [ARM] Update mach-typesRussell King2006-05-08
| | | | | | | | Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * [ARM] Update versatile_defconfigRussell King2006-05-08
| | | | | | | | | | | | | | Update versatile default configuration, enabling the AACI sound driver, VFP and Versatile AB support. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* | [PATCH] ppc32/8xx: Fix r3 trashing due to 8MB TLB page instantiationMarcelo Tosatti2006-05-09
| | | | | | | | | | | | | | | | | | Instantiation of 8MB pages on the TLB cache for the kernel static mapping trashes r3 register on !CONFIG_8xx_CPU6 configurations. This ensures r3 gets saved and restored. Signed-off-by: Marcelo Tosatti <marcelo@kvack.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
* | [PATCH] x86_64: Avoid EBDA area in early boot allocatorAndi Kleen2006-05-08
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Based on analysis&patch from Robert Hentosch Observed on a Dell PE6850 with 16GB The problem occurs very early on, when the kernel allocates space for the temporary memory map called bootmap. The bootmap overlaps the EBDA region. EBDA region is not historically reserved in the e820 mapping. When the bootmap is freed it marks the EBDA region as usable. If you notice in setup.c there is already code to work around the EBDA in reserve_ebda_region(), this check however occurs after the bootmap is allocated and doesn't prevent the bootmap from using this range. AK: I redid the original patch. Thanks also to Jan Beulich for spotting some mistakes. Cc: Robert_Hentosch@dell.com Cc: jbeulich@novell.com Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | [PATCH] x86_64: add nmi_exit to die_nmiCorey Minyard2006-05-08
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Playing with NMI watchdog on x86_64, I discovered that it didn't do what I expected. It always panic-ed, even when it didn't happen from interrupt context. This patch solves that problem for me. Also, in this case, do_exit() will be called with interrupts disabled, I believe. Would it be wise to also call local_irq_enable() after nmi_exit()? [Yes I added it -AK] Currently, on x86_64, any NMI watchdog timeout will cause a panic because the irq count will always be set to be in an interrupt when do_exit() is called from die_nmi(). If we add nmi_exit() to the die_nmi() call (since the nmi will never exit "normally") it seems to solve this problem. The following small program can be used to trigger the NMI watchdog to reproduce this: main () { iopl(3); for (;;) asm("cli"); } Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | [PATCH] x86_64: fix die_lock nestingCorey Minyard2006-05-08
| | | | | | | | | | | | | | | | | | | | | | | | | | I noticed this when poking around in this area. The oops_begin() function in x86_64 would only conditionally claim the die_lock if the call is nested, but oops_end() would always release the spinlock. This patch adds a nest count for the die lock so that the release of the lock is only done on the final oops_end(). Signed-off-by: Corey Minyard <minyard@acm.org> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | [PATCH] x86_64: Check for too many northbridges in IOMMU codeAndi Kleen2006-05-08
| | | | | | | | | | | | | | | | The IOMMU code can only deal with 8 northbridges. Error out when more are found. Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | [PATCH] x86_64: avoid IRQ0 ioapic pin collisionKimball Murray2006-05-08
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The patch addresses a problem with ACPI SCI interrupt entry, which gets re-used, and the IRQ is assigned to another unrelated device. The patch corrects the code such that SCI IRQ is skipped and duplicate entry is avoided. Second issue came up with VIA chipset, the problem was caused by original patch assigning IRQs starting 16 and up. The VIA chipset uses 4-bit IRQ register for internal interrupt routing, and therefore cannot handle IRQ numbers assigned to its devices. The patch corrects this problem by allowing PCI IRQs below 16. Cc: len.brown@intel.com Signed-off by: Natalie Protasevich <Natalie.Protasevich@unisys.com> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | Merge branch 'release' of ↵Linus Torvalds2006-05-08
|\ \ | |/ |/| | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6 * 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6: [IA64] remove asm-ia64/bitops.h self-inclusion [IA64] strcpy returns NULL pointer and not destination pointer
| * [IA64] strcpy returns NULL pointer and not destination pointerChen, Kenneth W2006-05-05
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Bob Picco noted that 6edfba1b33c701108717f4e036320fc39abe1912 dropped the -ffreestanding compiler flag from the top level Makefile, which allows the compiler to substitute memcpy() in places where strcpy() is used with a known size source string. But the ia64 memcpy() returns 0 for success, and "bytes copied" for failure. Fix to return the address of the destination string (like stdlibc version, and other architectures). There are no places where ia64 specific code makes use of the non-standard return value. Signed-off-by: Ken Chen <kenneth.w.chen@intel.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
* | [ARM] 3507/1: Replace map_desc.physical with map_desc.pfn: aaed2000Bellido Nicolas2006-05-07
| | | | | | | | | | | | | | | | | | Patch from Bellido Nicolas aaed2000 map_desc.pfn conversion Signed-off-by: Nicolas Bellido <ml@acolin.be> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* | [ARM] 3504/1: Fix clcd includes for aaec2000Bellido Nicolas2006-05-07
| | | | | | | | | | | | | | | | | | | | | | | | Patch from Bellido Nicolas Since this patch: [ARM] 3366/1: Allow the 16bpp mode configuration in the CLCD control register linux/amba/bus.h needs to be included before linux/amba/clcd.h Signed-off-by: Nicolas Bellido <ml@acolin.be> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* | [ARM] 3503/1: Fix map_desc structure for aaec2000Bellido Nicolas2006-05-07
| | | | | | | | | | | | | | | | | | | | | | Patch from Bellido Nicolas Patch: [ARM] 2982/1: Replace map_desc.physical with map_desc.pfn: aaec2000 incorrectly expanded the struct map_desc for aaec2000. Signed-off-by: Nicolas Bellido <ml@acolin.be> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* | [ARM] 3501/1: i.MX: fix lowlevel debug macrosSascha Hauer2006-05-07
| | | | | | | | | | | | | | | | | | | | Patch from Sascha Hauer This patch fixes the addruart macro to work with both mmu enabled and disabled. Signed-off-by: Sascha Hauer <s.hauer@pengutonix.de> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* | [ARM] Allow SA1100 RTC alarm to be configured for wakeupRussell King2006-05-06
| | | | | | | | | | | | | | | | | | The SA1100 RTC alarm can be configured to wake up the CPU from sleep mode, and the RTC driver has been using the API to configure this mode. Unfortunately, the code was which sets the required bit in the hardware was missing. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* | [ARM] 3500/1: fix PXA27x DMA allocation priorityNicolas Pitre2006-05-05
| | | | | | | | | | | | | | | | | | | | | | | | | | Patch from Nicolas Pitre Intel PXA27x developers manual section 5.4.1.1 lists a priority distribution for the DMA channels differently than what the code currently assumes. This patch fixes that. Noticed by Simon Vogl <vogl@soft.uni-linz.ac.at> Signed-off-by: Nicolas Pitre <nico@cam.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* | [ARM] 3499/1: Fix VFP FPSCR corruption for double exception caseGeorge G. Davis2006-05-05
| | | | | | | | | | | | | | | | | | | | | | | | | | Patch from George G. Davis The ARM VFP FPSCR register is corrupted when a condition flags modifying VFP instruction is followed by a non-condition flags modifying VFP instruction and both instructions raise exceptions. The fix is to read the current FPSCR in between emulation of these two instructions and use the current FPSCR value when handling the second exception. Signed-off-by: George G. Davis <gdavis@mvista.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* | [ARM] 3496/1: more constants for asm-offsets.hUwe Zeisberger2006-05-05
|/ | | | | | | | | | | | | | | | | Patch from Uwe Zeisberger added the following constants: - MACHINFO_TYPE - MACHINFO_NAME - MACHINFO_PHYSIO - MACHINFO_PGOFFIO - PROCINFO_INITFUNC - PROCINFO_MMUFLAGS and removed their definition from head.S and head-nommu.S Signed-off-by: Uwe Zeisberger <Uwe_Zeisberger@digi.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* Merge branch 'merge' of ↵Linus Torvalds2006-05-04
|\ | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc * 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc: [PATCH] powerpc: Use the ibm,pa-features property if available powerpc: Fix incorrect might_sleep in __get_user/__put_user on kernel addresses [PATCH] ppc32 CPM_UART: fixes and improvements [PATCH] ppc32 CPM_UART: Fixed break send on SCC [PATCH] powerpc/kprobes: fix singlestep out-of-line [PATCH] powerpc/pseries: avoid crash in PCI code if mem system not up
| * [PATCH] powerpc: Use the ibm,pa-features property if availablePaul Mackerras2006-05-03
| | | | | | | | | | | | | | | | | | | | | | | | | | Forthcoming IBM machines will have a "ibm,pa-features" property on CPU nodes, that contains bits indicating which optional architecture features are implemented by the CPU. This adds code to use the property, if present, to update our CPU feature bitmaps. Note that this means we can both set and clear feature bits based on what the firmware tells us. This is based on a patch by Will Schmidt <willschm@us.ibm.com>. Signed-off-by: Paul Mackerras <paulus@samba.org>
| * [PATCH] ppc32 CPM_UART: fixes and improvementsVitaly Bordug2006-05-03
| | | | | | | | | | | | | | | | | | | | | | A number of small issues are fixed, and added the header file, missed from the original series. With this, driver should be pretty stable as tested among both platform-device-driven and "old way" boards. Also added missing GPL statement , and updated year field on existing ones to reflect code update. Signed-off-by: Vitaly Bordug <vbordug@ru.mvista.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * [PATCH] powerpc/kprobes: fix singlestep out-of-lineAnanth N Mavinakayanahalli2006-05-03
| | | | | | | | | | | | | | | | | | | | | | | | | | | | We currently single-step inline if the instruction on which a kprobe is inserted is a trap variant. - variants (such as tdnei, used by BUG()) typically evaluate a condition and cause a trap only if the condition is satisfied. - kprobes uses the unconditional "trap" (0x7fe00008) and single-stepping again on this instruction, resulting in another trap without evaluating the condition is obviously incorrect. Signed-off-by: Ananth N Mavinakayanahalli <ananth@in.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * [PATCH] powerpc/pseries: avoid crash in PCI code if mem system not upLinas Vepstas2006-05-03
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The powerpc code is currently performing PCI setup before memory initialization. PCI setup touches PCI config space registers. If the PCI card is bad, this will evoke an error, which currrently can't be handled, as the PCI error recovery code expects kmalloc() to be functional. This patch will cause the system to punt instead of crashing with cpu 0x0: Vector: 300 (Data Access) at [c0000000004434d0] pc: c0000000000c06b4: .kmem_cache_alloc+0x8c/0xf4 lr: c00000000004ad6c: .eeh_send_failure_event+0x48/0xfc This patch will also print name of the offending pci device. Signed-off-by: Linas Vepstas <linas@austin.ibm.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
* | Merge master.kernel.org:/home/rmk/linux-2.6-armLinus Torvalds2006-05-04
|\ \ | | | | | | | | | | | | | | | | | | | | | * master.kernel.org:/home/rmk/linux-2.6-arm: [ARM] 3490/1: i.MX: move uart resources to board files [ARM] 3488/1: make icedcc_putc do the right thing [ARM] 3487/1: IXP4xx: Support non-PCI systems [ARM] 3486/1: Mark memory as clobbered by the ARM _syscallX() macros
| * | [ARM] 3490/1: i.MX: move uart resources to board filesSascha Hauer2006-05-04
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Patch from Sascha Hauer This patch moves the i.MX uart resources and the gpio pin setup to the board files. This allows the boards to decide how many internal uarts are connected to the outside world and whether they use rts/cts or not. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * | [ARM] 3488/1: make icedcc_putc do the right thingUwe Zeisberger2006-05-02
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Patch from Uwe Zeisberger a) use coprocessor 14 b) make reading the dcc status volatile Signed-off-by: Uwe Zeisberger <Uwe_Zeisberger@digi.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * | [ARM] 3487/1: IXP4xx: Support non-PCI systemsDeepak Saxena2006-04-30
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Patch from Deepak Saxena This patch allows for the addition of IXP4xx systems that do not make use of the PCI interface by moving the CONFIG_PCI symbol selection to be platform-specific instead of for all of IXP4xx. If at least one machine with PCI support is built, the PCI code will be compiled in, but when building !PCI, this will drastically shrink the kernel size. Signed-off-by: Deepak Saxena <dsaxena@plexity.net> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* | | Merge master.kernel.org:/pub/scm/linux/kernel/git/davem/sparc-2.6Linus Torvalds2006-05-04
|\ \ \ | | | | | | | | | | | | | | | | * master.kernel.org:/pub/scm/linux/kernel/git/davem/sparc-2.6: [SPARC]: Hook up vmsplice into syscall tables.
| * | | [SPARC]: Hook up vmsplice into syscall tables.David S. Miller2006-05-03
| | |/ | |/| | | | | | | Signed-off-by: David S. Miller <davem@davemloft.net>
* | | [PATCH] uml: change timer initializationJeff Dike2006-05-03
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | inet_init, which schedules, is called before the UML timer_init, which sets up the timer. The result is the interval timers being manipulated before the appropriate signal handlers are established, causing unhandled timers. This is fixed by making timer_init be called earlier. Signed-off-by: Jeff Dike <jdike@addtoit.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | | [PATCH] Remove wrong cpu_has_apic checks that came from mismergingAndi Kleen2006-05-03
|/ / | | | | | | | | | | | | | | | | We only need to check cpu_has_apic in the IO-APIC/L-APIC parsing, not for all of ACPI. Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | Merge branch 'audit.b10' of ↵Linus Torvalds2006-05-02
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/viro/audit-current * 'audit.b10' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/audit-current: [PATCH] Audit Filter Performance [PATCH] Rework of IPC auditing [PATCH] More user space subject labels [PATCH] Reworked patch for labels on user space messages [PATCH] change lspp ipc auditing [PATCH] audit inode patch [PATCH] support for context based audit filtering, part 2 [PATCH] support for context based audit filtering [PATCH] no need to wank with task_lock() and pinning task down in audit_syscall_exit() [PATCH] drop task argument of audit_syscall_{entry,exit} [PATCH] drop gfp_mask in audit_log_exit() [PATCH] move call of audit_free() into do_exit() [PATCH] sockaddr patch [PATCH] deal with deadlocks in audit_free()
| * | [PATCH] drop task argument of audit_syscall_{entry,exit}Al Viro2006-05-01
| |/ | | | | | | | | | | ... it's always current, and that's a good thing - allows simpler locking. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* | [PATCH] timer TSC check suspend notifier changeShaohua Li2006-05-01
| | | | | | | | | | | | | | | | | | | | | | At suspend time, the TSC CPUFREQ_SUSPENDCHANGE notifier change might wrongly enable interrupt. cpufreq driver suspend/resume is in interrupt disabled environment. Signed-off-by: Shaohua Li <shaohua.li@intel.com> Cc: Pavel Machek <pavel@ucw.cz> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | [PATCH] x86_64: make PC Speaker driver workMikael Pettersson2006-05-01
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The PC Speaker driver's ->probe() routine doesn't even get called in the 64-bit kernels. The reason for that is that the arch code apparently has to explictly add a "pcspkr" platform device in order for the driver core to call the ->probe() routine. arch/i386/kernel/setup.c unconditionally adds a "pcspkr" device, but the x86_64 kernel has no code at all related to the PC Speaker. The patch below copies the relevant code from i386 to x86_64, which makes the PC Speaker work for me on x86_64. Cc: Dmitry Torokhov <dtor_core@ameritech.net> Acked-by: Andi Kleen <ak@muc.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | [PATCH] s390: bug in setup_rt_frameHeiko Carstens2006-05-01
| | | | | | | | | | | | | | | | | | | | Consider return value of __put_user() when setting up a signal frame instead of ignoring it. Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | [PATCH] powerpc: cell: Add numa id to struct spuJeremy Kerr2006-05-01
| | | | | | | | | | | | | | | | | | | | Add an nid member to the spu structure, and store the numa id of the spu there on creation. Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com> Cc: Paul Mackerras <paulus@samba.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | [PATCH] powerpc: Allow devices to register with numa topologyJeremy Kerr2006-05-01
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Change of_node_to_nid() to traverse the device tree, looking for a numa id. Cell uses this to assign ids to SPUs, which are children of the CPU node. Existing users of of_node_to_nid() are altered to use of_node_to_nid_single(), which doesn't do the traversal. Export an attach_sysdev_to_node() function, allowing system devices (eg. SPUs) to link themselves into the numa topology in sysfs. Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com> Cc: Paul Mackerras <paulus@samba.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | [PATCH] spufs: fix for CONFIG_NUMAJoel H Schopp2006-05-01
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Based on an older patch from Mike Kravetz <kravetz@us.ibm.com> We need to have a mem_map for high addresses in order to make fops->no_page work on spufs mem and register files. So far, we have used the memory_present() function during early bootup, but that did not work when CONFIG_NUMA was enabled. We now use the __add_pages() function to add the mem_map when loading the spufs module, which is a lot nicer. Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com> Cc: Paul Mackerras <paulus@samba.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | [PATCH] uml: uml-makefile-nicer uses SYMLINK incorrectlyJeff Dike2006-05-01
| | | | | | | | | | | | | | | | | | | | Blaisorblade's uml-makefile-nicer makes a V=0 build say SYMLINK where what's happening is really a LINK. Signed-off-by: Jeff Dike <jdike@addtoit.com> Acked-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | [PATCH] uml: export symbols added by GCC hardenedPaolo 'Blaisorblade' Giarrusso2006-05-01
| | | | | | | | | | | | | | | | | | | | | | | | GCC hardened introduces additional symbol refererences (for the canary and friends), also in modules - add weak export_symbols for them. We already tested that the weak declaration creates no problem on both GCC's providing the function definition and on GCC's which don't provide it. Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> Acked-by: Jeff Dike <jdike@addtoit.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | [PATCH] uml: cleanup unprofile expression and build infrastructurePaolo 'Blaisorblade' Giarrusso2006-05-01
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | *) Rather than duplicate in various buggy ways the application of CFLAGS_NO_HARDENING and UNPROFILE (which apply to the same files), centralize it in Makefile.rules. UNPROFILE_OBJS mustn't be listed in USER_OBJS but are compiled as such. I've also verified that unprofile didn't work in the current form, because we set _c_flags directly (using CFLAGS and not USER_CFLAGS, which is wrong), which is normally used by c_flags, but we also override c_flags for all USER_OBJS, and there we don't call unprofile. Instead it only worked for unmap.o, the only one which wasn't a USER_OBJ. We need to set c_flags (which is not a public Kbuild API) to clear a lot of compilation flags like -nostdinc which Kbuild forces on everything. *) Rather than $(CFLAGS_$(notdir $@)), which expands to CFLAGS_anObj.s when building "anObj.s", use $(CFLAGS_$(*F).o) which always accesses CFLAGS_anObj.o, like done by Kbuild. *) Make c_flags apply to all targets having the same basename, rather than listing .s, .i, .lst and .o, with the use (which I tested) of $(USER_OBJS:.o=.%): c_flags = ... and of - $(obj)/unmap.c: _c_flags = ... + $(obj)/unmap.%: _c_flags = ... Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> Acked-by: Jeff Dike <jdike@addtoit.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | [PATCH] uml: fix compilation and execution with hardened GCCPaolo 'Blaisorblade' Giarrusso2006-05-01
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | To make some half-assembly stubs compile, disable various "hardened" GCC features: *) we can't make it build PIC code as we need %ebx to do syscalls and GCC wants it free for PIC *) we can't leave stack protection as the stub is moved (not relocated!) in memory so the RIP-relative access to the canary tries reading from an unmapped address and causes a segfault, since we move the stub of various megabytes (the exact amount will be decided at runtime) away from the link-time address. Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> Acked-by: Jeff Dike <jdike@addtoit.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | [PATCH] uml: use Kbuild tracking for all files and fix compilation outputPaolo 'Blaisorblade' Giarrusso2006-05-01
| | | | | | | | | | | | | | | | | | | | | | Move the build of user-offsets to arch/um/sys-$(SUBARCH), where it's located. So we can also build it via Kbuild with its dependency tracking rather than by hand. While hacking here, fix also a lot of little cosmetic things. Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> Acked-by: Jeff Dike <jdike@addtoit.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | [PATCH] uml: search from uml_net in a more reasonable PATHMattia Dongili2006-05-01
| | | | | | | | | | | | | | | | | | | | | | Append /usr/lib/uml to the existing PATH environment variable to let execvp() search uml_net in FHS compliant locations. Signed-off-by: Mattia Dongili <malattia@linux.it> Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> Acked-by: Jeff Dike <jdike@addtoit.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | [PATCH] uml: fix patch mismergePaolo 'Blaisorblade' Giarrusso2006-05-01
| | | | | | | | | | | | | | | | | | | | | | | | I sent a patch, it was applied as cda402b283c34a24b091f78eee116963e9494762, then it was applied again as 181ae4005d0a4010802be534d929b38c42b9ac06 by mistake. But while the 1st time it modified (correctly) cow_header_v3, the 2nd it modified cow_header_v3_broken. Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> Acked-by: Jeff Dike <jdike@addtoit.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | [PATCH] uml: error handling fixesJeff Dike2006-05-01
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Blairsorblade noticed some confusion between our use of a system call's return value and errno. This patch fixes a number of related bugs - using errno instead of a return value using a return value instead of errno forgetting to negate a error return to get a positive error code Signed-off-by: Jeff Dike <jdike@addtoit.com> Cc: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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