summaryrefslogtreecommitdiff
path: root/arch
AgeCommit message (Collapse)Author
2010-11-18x86/kprobes: Prevent kprobes to probe on save_args()Masami Hiramatsu
Prevent kprobes to probe on save_args() since this function will be called from breakpoint exception handler. That will cause infinit loop on breakpoint handling. Signed-off-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Cc: 2nddept-manager@sdl.hitachi.co.jp Cc: Ananth N Mavinakayanahalli <ananth@in.ibm.com> LKML-Reference: <20101118101655.2779.2816.stgit@ltc236.sdl.hitachi.co.jp> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2010-11-18x86: Add RO/NX protection for loadable kernel modulesmatthieu castet
This patch is a logical extension of the protection provided by CONFIG_DEBUG_RODATA to LKMs. The protection is provided by splitting module_core and module_init into three logical parts each and setting appropriate page access permissions for each individual section: 1. Code: RO+X 2. RO data: RO+NX 3. RW data: RW+NX In order to achieve proper protection, layout_sections() have been modified to align each of the three parts mentioned above onto page boundary. Next, the corresponding page access permissions are set right before successful exit from load_module(). Further, free_module() and sys_init_module have been modified to set module_core and module_init as RW+NX right before calling module_free(). By default, the original section layout and access flags are preserved. When compiled with CONFIG_DEBUG_SET_MODULE_RONX=y, the patch will page-align each group of sections to ensure that each page contains only one type of content and will enforce RO/NX for each group of pages. -v1: Initial proof-of-concept patch. -v2: The patch have been re-written to reduce the number of #ifdefs and to make it architecture-agnostic. Code formatting has also been corrected. -v3: Opportunistic RO/NX protection is now unconditional. Section page-alignment is enabled when CONFIG_DEBUG_RODATA=y. -v4: Removed most macros and improved coding style. -v5: Changed page-alignment and RO/NX section size calculation -v6: Fixed comments. Restricted RO/NX enforcement to x86 only -v7: Introduced CONFIG_DEBUG_SET_MODULE_RONX, added calls to set_all_modules_text_rw() and set_all_modules_text_ro() in ftrace -v8: updated for compatibility with linux 2.6.33-rc5 -v9: coding style fixes -v10: more coding style fixes -v11: minor adjustments for -tip -v12: minor adjustments for v2.6.35-rc2-tip -v13: minor adjustments for v2.6.37-rc1-tip Signed-off-by: Siarhei Liakh <sliakh.lkml@gmail.com> Signed-off-by: Xuxian Jiang <jiang@cs.ncsu.edu> Acked-by: Arjan van de Ven <arjan@linux.intel.com> Reviewed-by: James Morris <jmorris@namei.org> Signed-off-by: H. Peter Anvin <hpa@zytor.com> Cc: Andi Kleen <ak@muc.de> Cc: Rusty Russell <rusty@rustcorp.com.au> Cc: Stephen Rothwell <sfr@canb.auug.org.au> Cc: Dave Jones <davej@redhat.com> Cc: Kees Cook <kees.cook@canonical.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> LKML-Reference: <4CE2F914.9070106@free.fr> [ minor cleanliness edits, -v14: build failure fix ] Signed-off-by: Ingo Molnar <mingo@elte.hu>
2010-11-18x86: Add NX protection for kernel dataMatthieu Castet
This patch expands functionality of CONFIG_DEBUG_RODATA to set main (static) kernel data area as NX. The following steps are taken to achieve this: 1. Linker script is adjusted so .text always starts and ends on a page bound 2. Linker script is adjusted so .rodata always start and end on a page boundary 3. NX is set for all pages from _etext through _end in mark_rodata_ro. 4. free_init_pages() sets released memory NX in arch/x86/mm/init.c 5. bios rom is set to x when pcibios is used. The results of patch application may be observed in the diff of kernel page table dumps: pcibios: -- data_nx_pt_before.txt 2009-10-13 07:48:59.000000000 -0400 ++ data_nx_pt_after.txt 2009-10-13 07:26:46.000000000 -0400 0x00000000-0xc0000000 3G pmd ---[ Kernel Mapping ]--- -0xc0000000-0xc0100000 1M RW GLB x pte +0xc0000000-0xc00a0000 640K RW GLB NX pte +0xc00a0000-0xc0100000 384K RW GLB x pte -0xc0100000-0xc03d7000 2908K ro GLB x pte +0xc0100000-0xc0318000 2144K ro GLB x pte +0xc0318000-0xc03d7000 764K ro GLB NX pte -0xc03d7000-0xc0600000 2212K RW GLB x pte +0xc03d7000-0xc0600000 2212K RW GLB NX pte 0xc0600000-0xf7a00000 884M RW PSE GLB NX pmd 0xf7a00000-0xf7bfe000 2040K RW GLB NX pte 0xf7bfe000-0xf7c00000 8K pte No pcibios: -- data_nx_pt_before.txt 2009-10-13 07:48:59.000000000 -0400 ++ data_nx_pt_after.txt 2009-10-13 07:26:46.000000000 -0400 0x00000000-0xc0000000 3G pmd ---[ Kernel Mapping ]--- -0xc0000000-0xc0100000 1M RW GLB x pte +0xc0000000-0xc0100000 1M RW GLB NX pte -0xc0100000-0xc03d7000 2908K ro GLB x pte +0xc0100000-0xc0318000 2144K ro GLB x pte +0xc0318000-0xc03d7000 764K ro GLB NX pte -0xc03d7000-0xc0600000 2212K RW GLB x pte +0xc03d7000-0xc0600000 2212K RW GLB NX pte 0xc0600000-0xf7a00000 884M RW PSE GLB NX pmd 0xf7a00000-0xf7bfe000 2040K RW GLB NX pte 0xf7bfe000-0xf7c00000 8K pte The patch has been originally developed for Linux 2.6.34-rc2 x86 by Siarhei Liakh <sliakh.lkml@gmail.com> and Xuxian Jiang <jiang@cs.ncsu.edu>. -v1: initial patch for 2.6.30 -v2: patch for 2.6.31-rc7 -v3: moved all code into arch/x86, adjusted credits -v4: fixed ifdef, removed credits from CREDITS -v5: fixed an address calculation bug in mark_nxdata_nx() -v6: added acked-by and PT dump diff to commit log -v7: minor adjustments for -tip -v8: rework with the merge of "Set first MB as RW+NX" Signed-off-by: Siarhei Liakh <sliakh.lkml@gmail.com> Signed-off-by: Xuxian Jiang <jiang@cs.ncsu.edu> Signed-off-by: Matthieu CASTET <castet.matthieu@free.fr> Cc: Arjan van de Ven <arjan@infradead.org> Cc: James Morris <jmorris@namei.org> Cc: Andi Kleen <ak@muc.de> Cc: Rusty Russell <rusty@rustcorp.com.au> Cc: Stephen Rothwell <sfr@canb.auug.org.au> Cc: Dave Jones <davej@redhat.com> Cc: Kees Cook <kees.cook@canonical.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> LKML-Reference: <4CE2F82E.60601@free.fr> [ minor cleanliness edits ] Signed-off-by: Ingo Molnar <mingo@elte.hu>
2010-11-18x86: Fix improper large page preservationmatthieu castet
This patch fixes a bug in try_preserve_large_page() which may result in improper large page preservation and improper application of page attributes to the memory area outside of the original change request. More specifically, the problem manifests itself when set_memory_*() is called for several pages at the beginning of the large page and try_preserve_large_page() erroneously concludes that the change can be applied to whole large page. The fix consists of 3 parts: 1. Addition of "required" protection attributes in static_protections(), so .data and .bss can be guaranteed to stay "RW" 2. static_protections() is now called for every small page within large page to determine compatibility of new protection attributes (instead of just small pages within the requested range). 3. Large page can be preserved only if attribute change is large-page-aligned and covers whole large page. -v1: Try_preserve_large_page() patch for Linux 2.6.34-rc2 -v2: Replaced pfn check with address check for kernel rw-data Signed-off-by: Siarhei Liakh <sliakh.lkml@gmail.com> Signed-off-by: Xuxian Jiang <jiang@cs.ncsu.edu> Reviewed-by: Suresh Siddha <suresh.b.siddha@intel.com> Cc: Arjan van de Ven <arjan@infradead.org> Cc: James Morris <jmorris@namei.org> Cc: Andi Kleen <ak@muc.de> Cc: Rusty Russell <rusty@rustcorp.com.au> Cc: Stephen Rothwell <sfr@canb.auug.org.au> Cc: Dave Jones <davej@redhat.com> Cc: Kees Cook <kees.cook@canonical.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> LKML-Reference: <4CE2F7F3.8030809@free.fr> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2010-11-18x86: UV: Address interrupt/IO port operation conflictDimitri Sivanich
This patch for SGI UV systems addresses a problem whereby interrupt transactions being looped back from a local IOH, through the hub to a local CPU can (erroneously) conflict with IO port operations and other transactions. To workaound this we set a high bit in the APIC IDs used for interrupts. This bit appears to be ignored by the sockets, but it avoids the conflict in the hub. Signed-off-by: Dimitri Sivanich <sivanich@sgi.com> LKML-Reference: <20101116222352.GA8155@sgi.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> ___ arch/x86/include/asm/uv/uv_hub.h | 4 ++++ arch/x86/include/asm/uv/uv_mmrs.h | 19 ++++++++++++++++++- arch/x86/kernel/apic/x2apic_uv_x.c | 25 +++++++++++++++++++++++-- arch/x86/platform/uv/tlb_uv.c | 2 +- arch/x86/platform/uv/uv_time.c | 4 +++- 5 files changed, 49 insertions(+), 5 deletions(-)
2010-11-18Merge branch 'perf/urgent' of ↵Ingo Molnar
git://git.kernel.org/pub/scm/linux/kernel/git/frederic/random-tracing into perf/urgent
2010-11-18x86: Use online node real index in calulate_tbl_offset()Yinghai Lu
Found a NUMA system that doesn't have RAM installed at the first socket which hangs while executing init scripts. bisected it to: | commit 932967202182743c01a2eee4bdfa2c42697bc586 | Author: Shaohua Li <shaohua.li@intel.com> | Date: Wed Oct 20 11:07:03 2010 +0800 | | x86: Spread tlb flush vector between nodes It turns out when first socket is not online it could have cpus on node1 tlb_offset set to bigger than NUM_INVALIDATE_TLB_VECTORS. That could affect systems like 4 sockets, but socket 2 doesn't have installed, sockets 3 will get too big tlb_offset. Need to use real online node idx. Signed-off-by: Yinghai Lu <yinghai@kernel.org> Acked-by: Shaohua Li <shaohua.li@intel.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> LKML-Reference: <4CDEDE59.40603@kernel.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2010-11-18x86/platform: Add Eurobraille/Iris power off supportShérab
The Iris machines from Eurobraille do not have APM or ACPI support to shut themselves down properly. A special I/O sequence is needed to do so. This modle runs this I/O sequence at kernel shutdown when its force parameter is set to 1. Signed-off-by: Shérab <Sebastien.Hinderer@ens-lyon.org> Acked-by: "H. Peter Anvin" <hpa@zytor.com> [ did minor coding style edits ] Signed-off-by: Ingo Molnar <mingo@elte.hu>
2010-11-18x86: Fix included-by file reference commentsKees Cook
Adjust the paths for files that are including verify_cpu.S. Reported-by: Yinghai Lu <yinghai@kernel.org> Signed-off-by: Kees Cook <kees.cook@canonical.com> Acked-by: Pekka Enberg <penberg@kernel.org> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> LKML-Reference: <1289931004-16066-1-git-send-email-kees.cook@canonical.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2010-11-18x86, asm: Fix binutils 2.15 build failureTetsuo Handa
Add parentheses around one pushl_cfi argument. Commit df5d1874 "x86: Use {push,pop}{l,q}_cfi in more places" caused GNU assembler 2.15 (Debian Sarge) to fail. It is still failing as of commit 07bd8516 "x86, asm: Restore parentheses around one pushl_cfi argument". This patch solves build failure with GNU assembler 2.15. Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> Acked-by: Jan Beulich <jbeulich@novell.com> Cc: heukelum@fastmail.fm Cc: hpa@linux.intel.com LKML-Reference: <201011160445.oAG4jGif079860@www262.sakura.ne.jp> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2010-11-18x86, hw_nmi: Move backtrace_mask declaration under ARCH_HAS_NMI_WATCHDOGRakib Mullick
backtrace_mask has been used under the code context of ARCH_HAS_NMI_WATCHDOG. So put it into that context. We were warned by the following warning: arch/x86/kernel/apic/hw_nmi.c:21: warning: ‘backtrace_mask’ defined but not used Signed-off-by: Rakib Mullick <rakib.mullick@gmail.com> Signed-off-by: Don Zickus <dzickus@redhat.com> LKML-Reference: <1289573455-3410-2-git-send-email-dzickus@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2010-11-18x86, nmi_watchdog: Remove all stub function calls from old nmi_watchdogDon Zickus
Now that the bulk of the old nmi_watchdog is gone, remove all the stub variables and hooks associated with it. This touches lots of files mainly because of how the io_apic nmi_watchdog was implemented. Now that the io_apic nmi_watchdog is forever gone, remove all its fingers. Most of this code was not being exercised by virtue of nmi_watchdog != NMI_IO_APIC, so there shouldn't be anything to risky here. Signed-off-by: Don Zickus <dzickus@redhat.com> Cc: fweisbec@gmail.com Cc: gorcunov@openvz.org LKML-Reference: <1289578944-28564-3-git-send-email-dzickus@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2010-11-18x86, nmi_watchdog: Remove the old nmi_watchdogDon Zickus
Now that we have a new nmi_watchdog that is more generic and sits on top of the perf subsystem, we really do not need the old nmi_watchdog any more. In addition, the old nmi_watchdog doesn't really work if you are using the default clocksource, hpet. The old nmi_watchdog code relied on local apic interrupts to determine if the cpu is still alive. With hpet as the clocksource, these interrupts don't increment any more and the old nmi_watchdog triggers false postives. This piece removes the old nmi_watchdog code and stubs out any variables and functions calls. The stubs are the same ones used by the new nmi_watchdog code, so it should be well tested. Signed-off-by: Don Zickus <dzickus@redhat.com> Cc: fweisbec@gmail.com Cc: gorcunov@openvz.org LKML-Reference: <1289578944-28564-2-git-send-email-dzickus@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2010-11-18ARM: mach-shmobile: Add ag5evm defconfig.Paul Mundt
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2010-11-18Merge branch 'tip/perf/urgent-3' of ↵Ingo Molnar
git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-2.6-trace into perf/urgent
2010-11-18ARM: mach-shmobile: Split out entry-macros in to GIC and INTC variants.Paul Mundt
Presently the entry macros are all globbed together, this simply splits them out in to their insular variants. Future work such as the GIC generalization will replace some of these and tidy the abstraction up further. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2010-11-18ARM: mach-shmobile: Initial AG5 and AG5EVM supportMagnus Damm
This patch adds initial support for Renesas SH-Mobile AG5. At this point the AG5 CPU support is limited to the ARM core, SCIF serial and a CMT timer together with L2 cache and the GIC. The AG5EVM board also supports Ethernet. Future patches will add support for GPIO, INTCS, CPGA and platform data / driver updates for devices such as IIC, LCDC, FSI, KEYSC, CEU and SDHI among others. The code in entry-macro.S will be cleaned up when the ARM IRQ demux code improvements have been merged. Depends on the AG5EVM mach-type recently registered but not yet present in arch/arm/tools/mach-types. As the AG5EVM board comes with 512MiB memory it is recommended to turn on HIGHMEM. Many thanks to Yoshii-san for initial bring up. Signed-off-by: Magnus Damm <damm@opensource.se> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2010-11-18ARM: mach-shmobile: sh7372 USB0/IIC1 MSTP fixMagnus Damm
Fix a MSTP assignment problem in the sh7372 clock framework code. The USB drivers should attach to MSTP322 not MSTP33 where IIC1 is located. Signed-off-by: Magnus Damm <damm@opensource.se> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2010-11-18sh: Use GCC __builtin_prefetch() to implement prefetch().Giuseppe CAVALLARO
GCC's __builtin_prefetch() was introduced a long time ago, all supported GCC versions have it. So this patch is to use it for implementing the prefetch on SH2A and SH4. The current prefetch implementation is almost equivalent with __builtin_prefetch. The third parameter in the __builtin_prefetch is the locality that it's not supported on SH architectures. It has been set to three and it should be verified if it's suitable for SH2A as well. I didn't test on this architecture. The builtin usage should be more efficient that an __asm__ because less barriers, and because the compiler doesn't see the inst as a "black box" allowing better code generation. This has been already done on other architectures (see the commit: 0453fb3c528c5eb3483441a466b24a4cb409eec5). Many thanks to Christian Bruel <christain.bruel@st.com> for his support on evaluate the impact of the gcc built-in on SH4 arch. No regressions found while testing with LMbench on STLinux targets. Signed-off-by: Giuseppe Cavallaro <peppe.cavallaro@st.com> Signed-off-by: Stuart Menefy <stuart.menefy@st.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2010-11-18powerpc: Update a BKL related commentAlessio Igor Bogani
The commit 5e3d20a remove bkl from startup code so setup_arch() it isn't called with bkl held anymore. Update the comment on top of that function. Fix also a typo. This work was supported by a hardware donation from the CE Linux Forum. Signed-off-by: Alessio Igor Bogani <abogani@texware.it> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2010-11-18powerpc/mm: Fix module instruction tlb fault handling on Book-E 64Kumar Gala
We were seeing oops like the following when we did an rmmod on a module: Unable to handle kernel paging request for instruction fetch Faulting instruction address: 0x8000000000008010 Oops: Kernel access of bad area, sig: 11 [#1] SMP NR_CPUS=2 P5020 DS last sysfs file: /sys/devices/qman-portals.2/qman-pool.9/uevent Modules linked in: qman_tester(-) NIP: 8000000000008010 LR: c000000000074858 CTR: 8000000000008010 REGS: c00000002e29bab0 TRAP: 0400 Not tainted (2.6.34.6-00744-g2d21f14) MSR: 0000000080029000 <EE,ME,CE> CR: 24000448 XER: 00000000 TASK = c00000007a8be600[4987] 'rmmod' THREAD: c00000002e298000 CPU: 1 GPR00: 8000000000008010 c00000002e29bd30 8000000000012798 c00000000035fb28 GPR04: 0000000000000002 0000000000000002 0000000024022428 c000000000009108 GPR08: fffffffffffffffe 800000000000a618 c0000000003c13c8 0000000000000000 GPR12: 0000000022000444 c00000000fffed00 0000000000000000 0000000000000000 GPR16: 00000000100c0000 0000000000000000 00000000100dabc8 0000000010099688 GPR20: 0000000000000000 00000000100cfc28 0000000000000000 0000000010011a44 GPR24: 00000000100017b2 0000000000000000 0000000000000000 0000000000000880 GPR28: c00000000035fb28 800000000000a7b8 c000000000376d80 c0000000003cce50 NIP [8000000000008010] .test_exit+0x0/0x10 [qman_tester] LR [c000000000074858] .SyS_delete_module+0x1f8/0x2f0 Call Trace: [c00000002e29bd30] [c0000000000748b4] .SyS_delete_module+0x254/0x2f0 (unreliable) [c00000002e29be30] [c000000000000580] syscall_exit+0x0/0x2c Instruction dump: XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX 38600000 4e800020 60000000 60000000 <4e800020> 60000000 60000000 60000000 ---[ end trace 4f57124939a84dc8 ]--- This appears to be due to checking the wrong permission bits in the instruction_tlb_miss handling if the address that faulted was in vmalloc space. We need to look at the supervisor execute (_PAGE_BAP_SX) bit and not the user bit (_PAGE_BAP_UX/_PAGE_EXEC). Also removed a branch level since it did not appear to be used. Reported-by: Jeffrey Ladouceur <Jeffrey.Ladouceur@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2010-11-18powerpc: Fix call to subpage_protection()Michael Neuling
In: powerpc/mm: Fix pgtable cache cleanup with CONFIG_PPC_SUBPAGE_PROT commit d28513bc7f675d28b479db666d572e078ecf182d Author: David Gibson <david@gibson.dropbear.id.au> subpage_protection() was changed to to take an mm rather a pgdir but it didn't change calling site in hashpage_preload(). The change wasn't noticed at compile time since hashpage_preload() used a void* as the parameter to subpage_protection(). This is obviously wrong and can trigger the following crash when CONFIG_SLAB, CONFIG_DEBUG_SLAB, CONFIG_PPC_64K_PAGES CONFIG_PPC_SUBPAGE_PROT are enabled. Freeing unused kernel memory: 704k freed Unable to handle kernel paging request for data at address 0x6b6b6b6b6b6c49b7 Faulting instruction address: 0xc0000000000410f4 cpu 0x2: Vector: 300 (Data Access) at [c00000004233f590] pc: c0000000000410f4: .hash_preload+0x258/0x338 lr: c000000000041054: .hash_preload+0x1b8/0x338 sp: c00000004233f810 msr: 8000000000009032 dar: 6b6b6b6b6b6c49b7 dsisr: 40000000 current = 0xc00000007e2c0070 paca = 0xc000000007fe0500 pid = 1, comm = init enter ? for help [c00000004233f810] c000000000041020 .hash_preload+0x184/0x338 (unreliable) [c00000004233f8f0] c00000000003ed98 .update_mmu_cache+0xb0/0xd0 [c00000004233f990] c000000000157754 .__do_fault+0x48c/0x5dc [c00000004233faa0] c000000000158fd0 .handle_mm_fault+0x508/0xa8c [c00000004233fb90] c0000000006acdd4 .do_page_fault+0x428/0x6ac [c00000004233fe30] c000000000005260 handle_page_fault+0x20/0x74 Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2010-11-18powerpc: Set CONFIG_32BIT on ppc32kerstin jonsson
commit ffe8018c3424892c9590048fc36caa6c3e0c8a76 of the -mm tree fixes the initramfs size calculation for e.g. s390 but breaks it for 32bit architectures which do not define CONFIG_32BIT. This patch fix the problem for PPC32 which will elsewise end up with a __initramfs_size of 0. Signed-off-by: Kerstin Jonsson <kerstin.jonsson@ericsson.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2010-11-18powerpc/mm: Fix build error in setup_initial_memory_limitKumar Gala
arch/powerpc/mm/tlb_nohash.c: In function 'setup_initial_memory_limit': arch/powerpc/mm/tlb_nohash.c:588:29: error: 'ppc64_memblock_base' undeclared (first use in this function) arch/powerpc/mm/tlb_nohash.c:588:29: note: each undeclared identifier is reported only once for each function it appears in Due to a copy/paste typo with the following commit: commit cd3db0c4ca3d237e7ad20f7107216e575705d2b0 Author: Benjamin Herrenschmidt <benh@kernel.crashing.org> Date: Tue Jul 6 15:39:02 2010 -0700 memblock: Remove rmo_size, burry it in arch/powerpc where it belongs Signed-off-by: Kumar Gala <galak@kernel.crashing.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2010-11-18powerpc/pseries: Don't override CONFIG_PPC_PSERIES_DEBUGNishanth Aravamudan
EEH and pci_dlpar #undef DEBUG, but I think they were added before the ability to control this from Kconfig. It's really annoying to only get some of the debug messages from these files. Leave the lpar.c #undef alone as it produces so much output as to make the kernel unusable. Update the Kconfig text to indicate this particular quirk :) Signed-off-by: Nishanth Aravamudan <nacc@us.ibm.com> Acked-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2010-11-18powerpc: Fix div64 in bootloaderBenjamin Herrenschmidt
The code is missing a fix that went into the main kernel variant (we should try to share that code again at some stage) Reported-by: Albert Cahalan <acahalan@gmail.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2010-11-17KVM: VMX: Fix host userspace gsbase corruptionAvi Kivity
We now use load_gs_index() to load gs safely; unfortunately this also changes MSR_KERNEL_GS_BASE, which we managed separately. This resulted in confusion and breakage running 32-bit host userspace on a 64-bit kernel. Fix by - saving guest MSR_KERNEL_GS_BASE before we we reload the host's gs - doing the host save/load unconditionally, instead of only when in guest long mode Things can be cleaned up further, but this is the minmal fix for now. Signed-off-by: Avi Kivity <avi@redhat.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2010-11-17KVM: Correct ordering of ldt reload wrt fs/gs reloadAvi Kivity
If fs or gs refer to the ldt, they must be reloaded after the ldt. Reorder the code to that effect. Userspace code that uses the ldt with kvm is nonexistent, so this doesn't fix a user-visible bug. Signed-off-by: Avi Kivity <avi@redhat.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2010-11-17kgdb,ppc: Fix regression in evr register handlingDongdong Deng
Commit ff10b88b5a05c8f1646dd15fb9f6093c1384ff6d (kgdb,ppc: Individual register get/set for ppc) introduced a problem where memcpy was used incorrectly to read and write the evr registers with a kernel that has: CONFIG_FSL_BOOKE=y CONFIG_SPE=y CONFIG_KGDB=y This patch also fixes the following compilation problems: arch/powerpc/kernel/kgdb.c: In function 'dbg_get_reg': arch/powerpc/kernel/kgdb.c:341: error: passing argument 2 of 'memcpy' makes pointer from integer without a cast arch/powerpc/kernel/kgdb.c: In function 'dbg_set_reg': arch/powerpc/kernel/kgdb.c:366: error: passing argument 1 of 'memcpy' makes pointer from integer without a cast [jason.wessel@windriver.com: Remove void * casts and fix patch header] Reported-by: Milton Miller <miltonm@bga.com> Signed-off-by: Dongdong Deng <dongdong.deng@windriver.com> Acked-by: Kumar Gala <galak@kernel.crashing.org> Signed-off-by: Jason Wessel <jason.wessel@windriver.com> CC: linuxppc-dev@lists.ozlabs.org
2010-11-17kgdb,x86: fix regression in detach handlingJason Wessel
The fix from ba773f7c510c0b252145933926c636c439889207 (x86,kgdb: Fix hw breakpoint regression) was not entirely complete. The kgdb_remove_all_hw_break() function also needs to call the hw_break_release_slot() or else a breakpoint can get activated again after the debugger has detached. The kgdb test suite exposes the behavior in the form of either a hang or repetitive failure. The kernel config that exposes the problem contains all of the following: CONFIG_DEBUG_RODATA=y CONFIG_KGDB_TESTS=y CONFIG_KGDB_TESTS_ON_BOOT=y CONFIG_KGDB_TESTS_BOOT_STRING="V1F100" Reported-by: Frederic Weisbecker <fweisbec@gmail.com> Signed-off-by: Jason Wessel <jason.wessel@windriver.com> Tested-by: Frederic Weisbecker <fweisbec@gmail.com>
2010-11-17ASoC: davinci: fixes for multi-componentChris Paulson-Ellis
Multi-component commit f0fba2ad broke a few things which this patch should fix. Tested on the DM355 EVM. I've been as careful as I can, but it would be good if those with access to other Davinci boards could test. -- The multi-component commit put the initialisation of snd_soc_dai.[capture|playback]_dma_data into snd_soc_dai_ops.hw_params of the McBSP, McASP & VCIF drivers (davinci-i2s.c, davinci-mcasp.c & davinci-vcif.c). The initialisation had to be moved from the probe function in these drivers because davinci_*_dai changed from snd_soc_dai to snd_soc_dai_driver. Unfortunately, the DMA params pointer is needed by davinci_pcm_open (in davinci-pcm.c) before hw_params is called. I have moved the initialisation to a new snd_soc_dai_ops.startup function in each of these drivers. This fix indicates that all platforms that use davinci-pcm must have been broken and need to test with this fix. -- The multi-component commit also changed the McBSP driver name from "davinci-asp" to "davinci-i2s" in davinci-i2s.c without updating the board level references to the driver name. This change is understandable, as there is a similarly named "davinci-mcasp" driver in davinci-mcasp.c. There is probably no 'correct' name for this driver. The DM6446 datasheet calls it the "ASP" and describes it as a "specialised McBSP". The DM355 datasheet calls it the "ASP" and describes it as a "specialised ASP". The DM365 datasheet calls it the "McBSP". Rather than fix this problem by reverting to "davinci-asp", I've elected to avoid future confusion with the "davinci-mcasp" driver by changing it to "davinci-mcbsp", which is also consistent with the names of the functions in the driver. There are other fixes required, so it was never going to be as simple as a revert anyway. -- The DM365 only has one McBSP port (of the McBSP platforms, only the DM355 has 2 ports), so I've changed the the id of the platform_device from 0 to -1. -- In davinci-evm.c, the DM6446 EVM can no longer share a snd_soc_dai_link structure with the DM355 EVM as they use different cpu DAI names (the DM355 has 2 ports and the EVM uses the second port, but the DM6446 only has 1 port). This also means that the 2 boards need different snd_soc_card structures. -- The codec_name entries in davinci-evm.c didn't match the i2c ids in the board files. I have only checked and fixed the details of the names used for the McBSP based platforms. Someone with a McASP based platform (eg DA8xx) should check the others. Signed-off-by: Chris Paulson-Ellis <chris@edesix.com> Acked-by: Liam Girdwood <lrg@slimlogic.co.uk> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2010-11-17sparc: Do not export prom_nb{get,put}char().David S. Miller
Never used outside of console_{32,64}.c Signed-off-by: David S. Miller <davem@davemloft.net>
2010-11-17BKL: remove extraneous #include <smp_lock.h>Arnd Bergmann
The big kernel lock has been removed from all these files at some point, leaving only the #include. Remove this too as a cleanup. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-11-17x86, mrst: Fix dependencies of "select INTEL_SCU_IPC"Randy Dunlap
commit b9fc71f47 (x86, mrst: The shutdown for MRST requires the SCU IPC mechanism) introduced the following warning: warning: (X86_MRST && PCI && PCI_GOANY && X86_32 && X86_EXTENDED_PLATFORM && X86_IO_APIC) selects INTEL_SCU_IPC which has unmet direct dependencies (X86 && X86_PLATFORM_DEVICES && X86_MRST) which is due to the hierarchical menu structure. Select X86_PLATFORM_DEVICES as well. Originally-from: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> LKML-Reference: <20101115101406.77e072ef.randy.dunlap@oracle.com> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
2010-11-17x86, mrst: The shutdown for MRST requires the SCU IPC mechanismAlan Cox
Fix the build failure reported by Randy. Reported-by: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Alan Cox <alan@linux.intel.com> LKML-Reference: <20101115173110.6877.83958.stgit@localhost.localdomain> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2010-11-17OMAP: mux: Add __func__ macro to pr_xxx macrosDan Murphy
Removed mux: and added the __func__ macro to make debugging easier. Signed-off-by: Dan Murphy <dmurphy@ti.com> Signed-off-by: Benoit Cousson <b-cousson@ti.com> Cc: Tony Lindgren <tony@atomide.com>
2010-11-17OMAP4: pandaboard: Select CBL & CBS package and initialize muxsricharan
The mux framework allows the change of pad configuration by drivers when needed. Prior to this the mux framework has to be initialised with all the mux parameters specific to the board. The mux init is already present in the board file for SDP. Adding the mux init for panda boards. Signed-off-by: sricharan <r.sricharan@ti.com> Acked-by: Anand Gadiyar <gadiyar@ti.com> Signed-off-by: Benoit Cousson <b-cousson@ti.com> Cc: Santosh Shilimkar <santosh.shilimkar@ti.com>
2010-11-17OMAP4: sdp4430: Select CBS package for ES2Benoit Cousson
Select the CBS package if SDP4430 is enabled during config. Use the proper package (CBL or CBS) based on chip revision. Signed-off-by: Benoit Cousson <b-cousson@ti.com> Cc: Tony Lindgren <tony@atomide.com> Cc: Paul Walmsley <paul@pwsan.com> Cc: Santosh Shilimkar <santosh.shilimkar@ti.com> Cc: Anand Gadiyar <gadiyar@ti.com>
2010-11-17OMAP4: mux: Add CBS package data for OMAP4430 ES2Benoit Cousson
Please note that the full muxmodes are re-defined for ES2 instead of using the subset. There are 81 differences among 204 pins. The subset fixup will have to iterate over the whole list for each subset entry, which can lead to an important number of iteration. On the other hand, it will take much more memory at boot time. Signed-off-by: Benoit Cousson <b-cousson@ti.com> Cc: Tony Lindgren <tony@atomide.com> Cc: Paul Walmsley <paul@pwsan.com> Cc: Santosh Shilimkar <santosh.shilimkar@ti.com> Cc: Anand Gadiyar <gadiyar@ti.com>
2010-11-17OMAP4: sdp4430: Select CBL package for ES1 and initialize muxBenoit Cousson
Select the CBL package if SDP4430 is enabled during config. Initialize the mux framework during the board init. Signed-off-by: Benoit Cousson <b-cousson@ti.com> Cc: Tony Lindgren <tony@atomide.com> Cc: Paul Walmsley <paul@pwsan.com> Cc: Kevin Hilman <khilman@deeprootsystems.com>
2010-11-17OMAP4: mux: Add CBL package data for OMAP4430 ES1Benoit Cousson
Add data for OMAP4430 generated from HW pinout & register database. The data set is split in two partitions for both core and wkup. Signed-off-by: Benoit Cousson <b-cousson@ti.com> Cc: Tony Lindgren <tony@atomide.com> Cc: Paul Walmsley <paul@pwsan.com> Cc: Kevin Hilman <khilman@deeprootsystems.com>
2010-11-17OMAP: mux: Add support for control module split in several partitionsBenoit Cousson
Starting on OMAP4, the pin mux configuration is located in two different partitions of the control module (CODE_PAD and WKUP_PAD). The first one is inside the core power domain whereas the second one is inside the wakeup. - Add the capability to add any number of partition during board init time depending of Soc partitioning. - Add some init flags as well in order to avoid explicit Soc version check inside the mux core code. - Add a comment with mux0 mode on top of omap_mux/board/<partition> if the current mux mode is not the default one. Thanks to Tony Lindgren <tony@atomide.com> for the following improvements: - Add omap_mux_get for getting the partition data so platform level device code can use it. - Fix the rx51 board code to use the new API. - Do not store the partition for each mux entry. Look up the partition for debugfs instead. Thanks to Dan Murphy <dmurphy@ti.com> for testing on OMAP4 and reporting a couple of bugs. Thanks to Anand Gadiyar <gadiyar@ti.com> for testing on OMAP3 zoom and bug report. Signed-off-by: Benoit Cousson <b-cousson@ti.com> Signed-off-by: Tony Lindgren <tony@atomide.com> Tested-by: Murphy Dan <dmurphy@ti.com> Cc: Paul Walmsley <paul@pwsan.com> Cc: Kevin Hilman <khilman@deeprootsystems.com> Cc: Santosh Shilimkar <santosh.shilimkar@ti.com> Cc: Anand Gadiyar <gadiyar@ti.com>
2010-11-17OMAP: mux: Replace printk with pr_xxx macrosBenoit Cousson
Replace all the printk(KERN_XXX... with pr_xxx macros. Signed-off-by: Benoit Cousson <b-cousson@ti.com> Cc: Tony Lindgren <tony@atomide.com> Cc: Paul Walmsley <paul@pwsan.com> Cc: Kevin Hilman <khilman@deeprootsystems.com>
2010-11-17ARM: mx25: dynamically allocatate imx-fb devicesUwe Kleine-König
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
2010-11-17ARM: mx25: dynamically allocate imxdi_rtc devicesUwe Kleine-König
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
2010-11-17ARM: mx25: dynamically allocate imx-keypad devicesUwe Kleine-König
The mxc-keypad device seems to be the result of an early and partial merge of the keypad driver. It's unused and there is no corresponding driver available, so just remove it. Cc: Alberto Panizzo <maramaopercheseimorto@gmail.com> Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
2010-11-17ARM: mx25: move registration of gpios to plat-mxc/gpio.cUwe Kleine-König
To use common macros to define the gpio ports for imx{1,21,25,27} the existing ones had to made more general and a few more base address defines were necessary. Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
2010-11-17ARM: mx25: dynamically allocate mxc_pwm devicesUwe Kleine-König
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
2010-11-17ARM: mx25: dynamically allocate fsl-usb2-udc devicesUwe Kleine-König
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
2010-11-17ARM: mx25: dynamically allocate mxc-ehci devicesUwe Kleine-König
According to the reference manual of the i.MX25 the host controller uses an offset of 0x200 not 0x400 as was specified in the resources for mxc_usbh2. Needs-Testing: yes Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
generated by cgit (git 2.34.1) at 2025-09-15 09:33:53 +0000