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* s390/uaccess: fix possible register corruption in strnlen_user_srst()Heiko Carstens2014-04-11
| | | | | | | | | | | | The whole point of the out-of-line strnlen_user_srst() function was to avoid corruption of register 0 due to register asm assignment. However 'somebody' :) forgot to remove the update_primary_asce() function call, which may clobber register 0 contents. So let's remove that call and also move the size check to the calling function. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* s390: add 31 bit warning messageHeiko Carstens2014-04-11
| | | | | Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* s390: wire up sys_renameat2Heiko Carstens2014-04-11
| | | | | | | | Actually this also enable sys_setattr and sys_getattr, since I forgot to increase NR_syscalls when adding those syscalls. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* s390: show_registers() should not map user space addresses to kernel symbolsHeiko Carstens2014-04-11
| | | | | | | | | It doesn't make sense to map user space addresses to kernel symbols when show_registers() prints a user space psw. So just skip the translation part if a user space psw is handled. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* s390/mm: print control registers and page table walk on crashHeiko Carstens2014-04-09
| | | | | | | | | | | | Print extra debugging information to the console if the kernel or a user space process crashed (with user space debugging enabled): - contents of control register 7 and 13 - failing address and translation exception identification - page table walk for the failing address Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* s390/smp: fix smp_stop_cpu() for !CONFIG_SMPHeiko Carstens2014-04-09
| | | | | | | | | | | | | | | | | | | | | | smp_stop_cpu() should stop the current cpu even for !CONFIG_SMP. Otherwise machine_halt() will return and and the machine generates a panic instread of simply stopping the current cpu: Kernel panic - not syncing: Attempted to kill init! exitcode=0x00000000 CPU: 0 PID: 1 Comm: systemd-shutdow Not tainted 3.14.0-01527-g2b6ef16a6bc5 #10 [...] Call Trace: ([<0000000000110db0>] show_trace+0xf8/0x158) [<0000000000110e7a>] show_stack+0x6a/0xe8 [<000000000074dba8>] panic+0xe4/0x268 [<0000000000140570>] do_exit+0xa88/0xb2c [<000000000016e12c>] SyS_reboot+0x1f0/0x234 [<000000000075da70>] sysc_nr_ok+0x22/0x28 [<000000007d5a09b4>] 0x7d5a09b4 Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* s390: fix control register updateMartin Schwidefsky2014-04-09
| | | | | | | | | | The git commit c63badebfebacdba827ab1cc1d420fc81bd8d818 "s390: optimize control register update" broke the update for control register 0. After the update do the lctlg from the correct value. Cc: <stable@vger.kernel.org> # 3.14 Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* Merge branch 'akpm' (incoming from Andrew)Linus Torvalds2014-04-08
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Merge a few more patches from Andrew Morton: "A few leftovers" * emailed patches from Andrew Morton <akpm@linux-foundation.org>: fs/ncpfs/dir.c: fix indenting in ncp_lookup() ncpfs/inode.c: fix mismatch printk formats and arguments ncpfs: remove now unused PRINTK macro ncpfs: convert PPRINTK to ncp_vdbg ncpfs: convert DPRINTK/DDPRINTK to ncp_dbg ncpfs: Add pr_fmt and convert printks to pr_<level> arch/x86/mm/kmemcheck/kmemcheck.c: use kstrtoint() instead of sscanf() lib/percpu_counter.c: fix bad percpu counter state during suspend autofs4: check dev ioctl size before allocating mm: vmscan: do not swap anon pages just because free+file is low
| * arch/x86/mm/kmemcheck/kmemcheck.c: use kstrtoint() instead of sscanf()David Rientjes2014-04-08
| | | | | | | | | | | | | | | | | | | | | | | | Kmemcheck should use the preferred interface for parsing command line arguments, kstrto*(), rather than sscanf() itself. Use it appropriately. Signed-off-by: David Rientjes <rientjes@google.com> Cc: Vegard Nossum <vegardno@ifi.uio.no> Acked-by: Pekka Enberg <penberg@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | Merge tag 'arm64-upstream' of ↵Linus Torvalds2014-04-08
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux Pull second set of arm64 updates from Catalin Marinas: "A second pull request for this merging window, mainly with fixes and docs clarification: - Documentation clarification on CPU topology and booting requirements - Additional cache flushing during boot (needed in the presence of external caches or under virtualisation) - DMA range invalidation fix for non cache line aligned buffers - Build failure fix with !COMPAT - Kconfig update for STRICT_DEVMEM" * tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: arm64: Fix DMA range invalidation for cache line unaligned buffers arm64: Add missing Kconfig for CONFIG_STRICT_DEVMEM arm64: fix !CONFIG_COMPAT build failures Revert "arm64: virt: ensure visibility of __boot_cpu_mode" arm64: Relax the kernel cache requirements for boot arm64: Update the TCR_EL1 translation granule definitions for 16K pages ARM: topology: Make it clear that all CPUs need to be described
| * | arm64: Fix DMA range invalidation for cache line unaligned buffersCatalin Marinas2014-04-08
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | If the buffer needing cache invalidation for inbound DMA does start or end on a cache line aligned address, we need to use the non-destructive clean&invalidate operation. This issue was introduced by commit 7363590d2c46 (arm64: Implement coherent DMA API based on swiotlb). Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> Reported-by: Jon Medhurst (Tixy) <tixy@linaro.org>
| * | arm64: Add missing Kconfig for CONFIG_STRICT_DEVMEMLaura Abbott2014-04-07
| | | | | | | | | | | | | | | | | | | | | | | | The Kconfig for CONFIG_STRICT_DEVMEM is missing despite being used in mmap.c. Add it. Signed-off-by: Laura Abbott <lauraa@codeaurora.org> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
| * | arm64: fix !CONFIG_COMPAT build failuresMark Salter2014-04-06
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Recent arm64 builds using CONFIG_ARM64_64K_PAGES are failing with: arch/arm64/kernel/perf_regs.c: In function ‘perf_reg_abi’: arch/arm64/kernel/perf_regs.c:41:2: error: implicit declaration of function ‘is_compat_thread’ arch/arm64/kernel/perf_event.c:1398:2: error: unknown type name ‘compat_uptr_t’ This is due to some recent arm64 perf commits with compat support: commit 23c7d70d55c6d9: ARM64: perf: add support for frame pointer unwinding in compat mode commit 2ee0d7fd36a3f8: ARM64: perf: add support for perf registers API Those patches make the arm64 kernel unbuildable if CONFIG_COMPAT is not defined and CONFIG_ARM64_64K_PAGES depends on !CONFIG_COMPAT. This patch allows the arm64 kernel to build with and without CONFIG_COMPAT. Signed-off-by: Mark Salter <msalter@redhat.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
| * | Revert "arm64: virt: ensure visibility of __boot_cpu_mode"Catalin Marinas2014-04-05
| | | | | | | | | | | | | | | | | | | | | | | | This reverts commit 82b2f495fba338d1e3098dde1df54944a9c19751. The __boot_cpu_mode variable is flushed in head.S after being written, therefore the additional cache flushing is no longer required. Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
| * | arm64: Relax the kernel cache requirements for bootCatalin Marinas2014-04-05
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | With system caches for the host OS or architected caches for guest OS we cannot easily guarantee that there are no dirty or stale cache lines for the areas of memory written by the kernel during boot with the MMU off (therefore non-cacheable accesses). This patch adds the necessary cache maintenance during boot and relaxes the booting requirements. Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
| * | arm64: Update the TCR_EL1 translation granule definitions for 16K pagesCatalin Marinas2014-04-03
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The current TCR register setting in arch/arm64/mm/proc.S assumes that TCR_EL1.TG* fields are one bit wide and bit 31 is RES1 (reserved, set to 1). With the addition of 16K pages (currently unsupported in the kernel), the TCR_EL1.TG* fields have been extended to two bits. This patch updates the corresponding Linux definitions and drops the bit 31 setting in proc.S in favour of the new macros. Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> Reported-by: Joe Sylve <joe.sylve@gmail.com>
* | | Merge branch 'for-linus' of ↵Linus Torvalds2014-04-08
|\ \ \ | |_|/ |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux Pull second set of s390 patches from Martin Schwidefsky: "The second part of Heikos uaccess rework, the page table walker for uaccess is now a thing of the past (yay!) The code change to fix the theoretical TLB flush problem allows us to add a TLB flush optimization for zEC12, this machine has new instructions that allow to do CPU local TLB flushes for single pages and for all pages of a specific address space. Plus the usual bug fixing and some more cleanup" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: s390/uaccess: rework uaccess code - fix locking issues s390/mm,tlb: optimize TLB flushing for zEC12 s390/mm,tlb: safeguard against speculative TLB creation s390/irq: Use defines for external interruption codes s390/irq: Add defines for external interruption codes s390/sclp: add timeout for queued requests kvm/s390: also set guest pages back to stable on kexec/kdump lcs: Add missing destroy_timer_on_stack() s390/tape: Add missing destroy_timer_on_stack() s390/tape: Use del_timer_sync() s390/3270: fix crash with multiple reset device requests s390/bitops,atomic: add missing memory barriers s390/zcrypt: add length check for aligned data to avoid overflow in msg-type 6
| * | s390/uaccess: rework uaccess code - fix locking issuesHeiko Carstens2014-04-03
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The current uaccess code uses a page table walk in some circumstances, e.g. in case of the in atomic futex operations or if running on old hardware which doesn't support the mvcos instruction. However it turned out that the page table walk code does not correctly lock page tables when accessing page table entries. In other words: a different cpu may invalidate a page table entry while the current cpu inspects the pte. This may lead to random data corruption. Adding correct locking however isn't trivial for all uaccess operations. Especially copy_in_user() is problematic since that requires to hold at least two locks, but must be protected against ABBA deadlock when a different cpu also performs a copy_in_user() operation. So the solution is a different approach where we change address spaces: User space runs in primary address mode, or access register mode within vdso code, like it currently already does. The kernel usually also runs in home space mode, however when accessing user space the kernel switches to primary or secondary address mode if the mvcos instruction is not available or if a compare-and-swap (futex) instruction on a user space address is performed. KVM however is special, since that requires the kernel to run in home address space while implicitly accessing user space with the sie instruction. So we end up with: User space: - runs in primary or access register mode - cr1 contains the user asce - cr7 contains the user asce - cr13 contains the kernel asce Kernel space: - runs in home space mode - cr1 contains the user or kernel asce -> the kernel asce is loaded when a uaccess requires primary or secondary address mode - cr7 contains the user or kernel asce, (changed with set_fs()) - cr13 contains the kernel asce In case of uaccess the kernel changes to: - primary space mode in case of a uaccess (copy_to_user) and uses e.g. the mvcp instruction to access user space. However the kernel will stay in home space mode if the mvcos instruction is available - secondary space mode in case of futex atomic operations, so that the instructions come from primary address space and data from secondary space In case of kvm the kernel runs in home space mode, but cr1 gets switched to contain the gmap asce before the sie instruction gets executed. When the sie instruction is finished cr1 will be switched back to contain the user asce. A context switch between two processes will always load the kernel asce for the next process in cr1. So the first exit to user space is a bit more expensive (one extra load control register instruction) than before, however keeps the code rather simple. In sum this means there is no need to perform any error prone page table walks anymore when accessing user space. The patch seems to be rather large, however it mainly removes the the page table walk code and restores the previously deleted "standard" uaccess code, with a couple of changes. The uaccess without mvcos mode can be enforced with the "uaccess_primary" kernel parameter. Reported-by: Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
| * | s390/mm,tlb: optimize TLB flushing for zEC12Martin Schwidefsky2014-04-03
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The zEC12 machines introduced the local-clearing control for the IDTE and IPTE instruction. If the control is set only the TLB of the local CPU is cleared of entries, either all entries of a single address space for IDTE, or the entry for a single page-table entry for IPTE. Without the local-clearing control the TLB flush is broadcasted to all CPUs in the configuration, which is expensive. The reset of the bit mask of the CPUs that need flushing after a non-local IDTE is tricky. As TLB entries for an address space remain in the TLB even if the address space is detached a new bit field is required to keep track of attached CPUs vs. CPUs in the need of a flush. After a non-local flush with IDTE the bit-field of attached CPUs is copied to the bit-field of CPUs in need of a flush. The ordering of operations on cpu_attach_mask, attach_count and mm_cpumask(mm) is such that an underindication in mm_cpumask(mm) is prevented but an overindication in mm_cpumask(mm) is possible. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
| * | s390/mm,tlb: safeguard against speculative TLB creationMartin Schwidefsky2014-04-03
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The principles of operations states that the CPU is allowed to create TLB entries for an address space anytime while an ASCE is loaded to the control register. This is true even if the CPU is running in the kernel and the user address space is not (actively) accessed. In theory this can affect two aspects of the TLB flush logic. For full-mm flushes the ASCE of the dying process is still attached. The approach to flush first with IDTE and then just free all page tables can in theory lead to stale TLB entries. Use the batched free of page tables for the full-mm flushes as well. For operations that can have a stale ASCE in the control register, e.g. a delayed update_user_asce in switch_mm, load the kernel ASCE to prevent invalid TLBs from being created. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
| * | s390/irq: Use defines for external interruption codesThomas Huth2014-04-03
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Use the new defines for external interruption codes to get rid of "magic" numbers in the s390 source code. And while we're at it, also rename the (un-)register_external_interrupt function to something shorter so that this patch does not exceed the 80 columns all over the place. Signed-off-by: Thomas Huth <thuth@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
| * | s390/irq: Add defines for external interruption codesThomas Huth2014-04-03
| | | | | | | | | | | | | | | | | | | | | | | | Introduce defines for external interruption codes so that we can get rid of some "magic" numbers in the s390 source code. Signed-off-by: Thomas Huth <thuth@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
| * | kvm/s390: also set guest pages back to stable on kexec/kdumpChristian Borntraeger2014-04-01
| | | | | | | | | | | | | | | | | | | | | | | | | | | We need to reset the usage state of the pages on kexec/kdump, which use subcode 0 and 1. We will only do the cmma reset in the kernel, everything else is done in userspace as before. Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
| * | s390/bitops,atomic: add missing memory barriersHeiko Carstens2014-04-01
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When reworking the bitops and atomic ops I missed that those instructions that got atomic behaviour only perform a "specific-operand-serialization" instead of a full "serialization". The compare-and-swap instruction used before performs a full serialization before and after the instruction is executed, which means it has full memory barrier semantics. In order to give the new bitops and atomic ops functions also full memory barrier semantics add a "bcr 14,0" before and after each of those new instructions which performs full serialization as well. This restores memory barrier semantics for bitops and atomic ops functions which return values, like e.g. atomic_add_return(), but not for functions which do not return a value, like e.g. atomic_add(). This is consistent to other architectures and what common code requires. Cc: stable@vger.kernel.org # v3.13+ Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* | | Merge branch 'drm-next' of git://people.freedesktop.org/~airlied/linuxLinus Torvalds2014-04-08
|\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull drm updates from Dave Airlie: "Highlights: - drm: Generic display port aux features, primary plane support, drm master management fixes, logging cleanups, enforced locking checks (instead of docs), documentation improvements, minor number handling cleanup, pseudofs for shared inodes. - ttm: add ability to allocate from both ends - i915: broadwell features, power domain and runtime pm, per-process address space infrastructure (not enabled) - msm: power management, hdmi audio support - nouveau: ongoing GPU fault recovery, initial maxwell support, random fixes - exynos: refactored driver to clean up a lot of abstraction, DP support moved into drm, LVDS bridge support added, parallel panel support - gma500: SGX MMU support, SGX irq handling, asle irq work fixes - radeon: video engine bringup, ring handling fixes, use dp aux helpers - vmwgfx: add rendernode support" * 'drm-next' of git://people.freedesktop.org/~airlied/linux: (849 commits) DRM: armada: fix corruption while loading cursors drm/dp_helper: don't return EPROTO for defers (v2) drm/bridge: export ptn3460_init function drm/exynos: remove MODULE_DEVICE_TABLE definitions ARM: dts: exynos4412-trats2: enable exynos/fimd node ARM: dts: exynos4210-trats: enable exynos/fimd node ARM: dts: exynos4412-trats2: add panel node ARM: dts: exynos4210-trats: add panel node ARM: dts: exynos4: add MIPI DSI Master node drm/panel: add S6E8AA0 driver ARM: dts: exynos4210-universal_c210: add proper panel node drm/panel: add ld9040 driver panel/ld9040: add DT bindings panel/s6e8aa0: add DT bindings drm/exynos: add DSIM driver exynos/dsim: add DT bindings drm/exynos: disallow fbdev initialization if no device is connected drm/mipi_dsi: create dsi devices only for nodes with reg property drm/mipi_dsi: add flags to DSI messages Skip intel_crt_init for Dell XPS 8700 ...
| * \ \ Merge tag 'drm-intel-fixes-2014-04-04' of ↵Dave Airlie2014-04-05
| |\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://anongit.freedesktop.org/drm-intel into drm-next Merge window -fixes pull request as usual. Well, I did sneak in Jani's drm_i915_private_t typedef removal, need to have fun with a big sed job too ;-) Otherwise: - hdmi interlaced fixes (Jesse&Ville) - pipe error/underrun/crc tracking fixes, regression in late 3.14-rc (but not cc: stable since only really relevant for igt runs) - large cursor wm fixes (Chris) - fix gpu turbo boost/throttle again, was getting stuck due to vlv rps patches (Chris+Imre) - fix runtime pm fallout (Paulo) - bios framebuffer inherit fix (Chris) - a few smaller things * tag 'drm-intel-fixes-2014-04-04' of git://anongit.freedesktop.org/drm-intel: (196 commits) Skip intel_crt_init for Dell XPS 8700 drm/i915: vlv: fix RPS interrupt mask setting Revert "drm/i915/vlv: fixup DDR freq detection per Punit spec" drm/i915: move power domain init earlier during system resume drm/i915: Fix the computation of required fb size for pipe drm/i915: don't get/put runtime PM at the debugfs forcewake file drm/i915: fix WARNs when reading DDI state while suspended drm/i915: don't read cursor registers on powered down pipes drm/i915: get runtime PM at i915_display_info drm/i915: don't read pp_ctrl_reg if we're suspended drm/i915: get runtime PM at i915_reg_read_ioctl drm/i915: don't schedule force_wake_timer at gen6_read drm/i915: vlv: reserve the GT power context only once during driver init drm/i915: prefer struct drm_i915_private to drm_i915_private_t drm/i915/overlay: prefer struct drm_i915_private to drm_i915_private_t drm/i915/ringbuffer: prefer struct drm_i915_private to drm_i915_private_t drm/i915/display: prefer struct drm_i915_private to drm_i915_private_t drm/i915/irq: prefer struct drm_i915_private to drm_i915_private_t drm/i915/gem: prefer struct drm_i915_private to drm_i915_private_t drm/i915/dma: prefer struct drm_i915_private to drm_i915_private_t ...
| * | | | ARM: dts: exynos4412-trats2: enable exynos/fimd nodeAndrzej Hajda2014-04-04
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The patch changes fimd node status to OK. Signed-off-by: Andrzej Hajda <a.hajda@samsung.com> Signed-off-by: Inki Dae <inki.dae@samsung.com>
| * | | | ARM: dts: exynos4210-trats: enable exynos/fimd nodeAndrzej Hajda2014-04-04
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The patch changes fimd node status to OK. Signed-off-by: Andrzej Hajda <a.hajda@samsung.com> Signed-off-by: Inki Dae <inki.dae@samsung.com>
| * | | | ARM: dts: exynos4412-trats2: add panel nodeAndrzej Hajda2014-04-04
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The patch adds s6e8aa0 panel node for trats2. It adds also trats2 specific properties for DSI and regulator required by panel. Signed-off-by: Andrzej Hajda <a.hajda@samsung.com> Signed-off-by: Inki Dae <inki.dae@samsung.com>
| * | | | ARM: dts: exynos4210-trats: add panel nodeAndrzej Hajda2014-04-04
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The patch adds s6e8aa0 panel node for trats. It adds also trats specific properties for DSI. Signed-off-by: Andrzej Hajda <a.hajda@samsung.com> Signed-off-by: Inki Dae <inki.dae@samsung.com>
| * | | | ARM: dts: exynos4: add MIPI DSI Master nodeAndrzej Hajda2014-04-04
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This is a common part of DSI node for all Exynos4 boards. Signed-off-by: Andrzej Hajda <a.hajda@samsung.com> Signed-off-by: Inki Dae <inki.dae@samsung.com>
| * | | | ARM: dts: exynos4210-universal_c210: add proper panel nodeAndrzej Hajda2014-04-04
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch replaces panel bindings for panel initialized by boot loader with bindings to proper ld9040 panel. Signed-off-by: Andrzej Hajda <a.hajda@samsung.com> Signed-off-by: Inki Dae <inki.dae@samsung.com>
| * | | | ARM: dts: exynos4210-universal: add exynos/fimd nodeAndrzej Hajda2014-03-23
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The patch adds fimd node with display timings for exynos4210-universal device. It also makes LCD regulators always on. This allow to re-use panel initialized by boot loader. Signed-off-by: Andrzej Hajda <a.hajda@samsung.com> Reviewed-by: Tomasz Figa <t.figa@samsung.com> Signed-off-by: Inki Dae <inki.dae@samsung.com>
* | | | | Merge tag 'arc-v3.15-rc1' of ↵Linus Torvalds2014-04-07
|\ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc Pull ARC changes from Vineet Gupta: - Support for external initrd from Noam - Fix broken serial console in nsimosci Virtual Platform - Reuse of ENTRY/END assembler macros across hand asm code - Other minor fixes here and there * tag 'arc-v3.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc: ARC: [nsimosci] Unbork console ARC: [nsimosci] Change .dts to use generic 8250 UART ARC: [SMP] General Fixes ARC: Remove unused DT template file ARC: [clockevent] simplify timer ISR ARC: [clockevent] can't be SoC specific ARC: Remove ARC_HAS_COH_RTSC ARC: switch to generic ENTRY/END assembler annotations ARC: support external initrd ARC: add uImage to .gitignore ARC: [arcfpga] Fix __initconst data const-correctness
| * | | | | ARC: [nsimosci] Unbork consoleVineet Gupta2014-04-05
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Despite the switch to right UART driver (prev patch), serial console still doesn't work due to missing CONFIG_SERIAL_OF_PLATFORM Also fix the default cmdline in DT to not refer to out-of-tree ARC framebuffer driver for console. Signed-off-by: Vineet Gupta <vgupta@synopsys.com> Cc: <stable@vger.kernel.org> #3.10, 3.12, 3.13, 3.14 Cc: Francois Bedard <Francois.Bedard@synopsys.com>
| * | | | | ARC: [nsimosci] Change .dts to use generic 8250 UARTMischa Jonker2014-04-05
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The Synopsys APB DW UART has a couple of special features that are not in the System C model. In 3.8, the 8250_dw driver didn't really use these features, but from 3.9 onwards, the 8250_dw driver has become incompatible with our model. Signed-off-by: Mischa Jonker <mjonker@synopsys.com> Signed-off-by: Vineet Gupta <vgupta@synopsys.com> Cc: <stable@vger.kernel.org> #3.10, 3.12, 3.13, 3.14 Cc: Francois Bedard <Francois.Bedard@synopsys.com>
| * | | | | ARC: [SMP] General FixesVineet Gupta2014-04-05
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | -Pass the expected arg to non-boot park'ing routine (It worked so far because existing SMP backends don't use the arg) -CONFIG_DEBUG_PREEMPT warning
| * | | | | ARC: Remove unused DT template fileVineet Gupta2014-03-31
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Commit abe11ddea1d759f9 "Enabling DeviceTree for Angel4 board" made angel4.dts as default leaving the orphan skeleton file behind. Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
| * | | | | ARC: [clockevent] simplify timer ISRVineet Gupta2014-03-26
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * Remove one liner IRQ ACK accessor, it was coming in the way of readability. Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
| * | | | | ARC: [clockevent] can't be SoC specificVineet Gupta2014-03-26
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | So no point keeping it weak Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
| * | | | | ARC: Remove ARC_HAS_COH_RTSCRichard Weinberger2014-03-26
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The symbol is an orphan, get rid of it. Fixes: 7d0857a54aed ("ARC: [SMP] Disallow RTSC") Signed-off-by: Richard Weinberger <richard@nod.at> Acked-by: Paul Bolle <pebolle@tiscali.nl> Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
| * | | | | ARC: switch to generic ENTRY/END assembler annotationsVineet Gupta2014-03-26
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | With commit 9df62f054406 "arch: use ASM_NL instead of ';'" the generic macros can handle the arch specific newline quirk. Hence we can get rid of ARC asm macros and use the "C" style macros. Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
| * | | | | ARC: support external initrdNoam Camus2014-03-26
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Currently ARC only supports embedded initrd. This patch enables external ones too. [vgupta: Changed from "rt_start"=start/"rd_size"=sz to unified "initrd"=start,sz] Signed-off-by: Noam Camus <noamc@ezchip.com> Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
| * | | | | ARC: add uImage to .gitignoreMischa Jonker2014-03-26
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: Mischa Jonker <mjonker@synopsys.com> Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
| * | | | | ARC: [arcfpga] Fix __initconst data const-correctnessMischa Jonker2014-03-26
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: Mischa Jonker <mjonker@synopsys.com> Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
* | | | | | Merge branch 'akpm' (incoming from Andrew)Linus Torvalds2014-04-07
|\ \ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Merge second patch-bomb from Andrew Morton: - the rest of MM - zram updates - zswap updates - exit - procfs - exec - wait - crash dump - lib/idr - rapidio - adfs, affs, bfs, ufs - cris - Kconfig things - initramfs - small amount of IPC material - percpu enhancements - early ioremap support - various other misc things * emailed patches from Andrew Morton <akpm@linux-foundation.org>: (156 commits) MAINTAINERS: update Intel C600 SAS driver maintainers fs/ufs: remove unused ufs_super_block_third pointer fs/ufs: remove unused ufs_super_block_second pointer fs/ufs: remove unused ufs_super_block_first pointer fs/ufs/super.c: add __init to init_inodecache() doc/kernel-parameters.txt: add early_ioremap_debug arm64: add early_ioremap support arm64: initialize pgprot info earlier in boot x86: use generic early_ioremap mm: create generic early_ioremap() support x86/mm: sparse warning fix for early_memremap lglock: map to spinlock when !CONFIG_SMP percpu: add preemption checks to __this_cpu ops vmstat: use raw_cpu_ops to avoid false positives on preemption checks slub: use raw_cpu_inc for incrementing statistics net: replace __this_cpu_inc in route.c with raw_cpu_inc modules: use raw_cpu_write for initialization of per cpu refcount. mm: use raw_cpu ops for determining current NUMA node percpu: add raw_cpu_ops slub: fix leak of 'name' in sysfs_slab_add ...
| * | | | | | arm64: add early_ioremap supportMark Salter2014-04-07
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add support for early IO or memory mappings which are needed before the normal ioremap() is usable. This also adds fixmap support for permanent fixed mappings such as that used by the earlyprintk device register region. Signed-off-by: Mark Salter <msalter@redhat.com> Acked-by: Catalin Marinas <catalin.marinas@arm.com> Cc: Borislav Petkov <borislav.petkov@amd.com> Cc: Dave Young <dyoung@redhat.com> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Will Deacon <will.deacon@arm.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| * | | | | | arm64: initialize pgprot info earlier in bootMark Salter2014-04-07
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Presently, paging_init() calls init_mem_pgprot() to initialize pgprot values used by macros such as PAGE_KERNEL, PAGE_KERNEL_EXEC, etc. The new fixmap and early_ioremap support also needs to use these macros before paging_init() is called. This patch moves the init_mem_pgprot() call out of paging_init() and into setup_arch() so that pgprot_default gets initialized in time for fixmap and early_ioremap. Signed-off-by: Mark Salter <msalter@redhat.com> Acked-by: Catalin Marinas <catalin.marinas@arm.com> Cc: Will Deacon <will.deacon@arm.com> Cc: Borislav Petkov <borislav.petkov@amd.com> Cc: Dave Young <dyoung@redhat.com> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| * | | | | | x86: use generic early_ioremapMark Salter2014-04-07
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Move x86 over to the generic early ioremap implementation. Signed-off-by: Mark Salter <msalter@redhat.com> Acked-by: H. Peter Anvin <hpa@zytor.com> Cc: Borislav Petkov <borislav.petkov@amd.com> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Dave Young <dyoung@redhat.com> Cc: Will Deacon <will.deacon@arm.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| * | | | | | x86/mm: sparse warning fix for early_memremapDave Young2014-04-07
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch series takes the common bits from the x86 early ioremap implementation and creates a generic implementation which may be used by other architectures. The early ioremap interfaces are intended for situations where boot code needs to make temporary virtual mappings before the normal ioremap interfaces are available. Typically, this means before paging_init() has run. This patch (of 6): There's a lot of sparse warnings for code like below: void *a = early_memremap(phys_addr, size); early_memremap intend to map kernel memory with ioremap facility, the return pointer should be a kernel ram pointer instead of iomem one. For making the function clearer and supressing sparse warnings this patch do below two things: 1. cast to (__force void *) for the return value of early_memremap 2. add early_memunmap function and pass (__force void __iomem *) to iounmap From Boris: "Ingo told me yesterday, it makes sense too. I'd guess we can try it. FWIW, all callers of early_memremap use the memory they get remapped as normal memory so we should be safe" Signed-off-by: Dave Young <dyoung@redhat.com> Signed-off-by: Mark Salter <msalter@redhat.com> Acked-by: H. Peter Anvin <hpa@zytor.com> Cc: Borislav Petkov <borislav.petkov@amd.com> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Will Deacon <will.deacon@arm.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
generated by cgit v1.2.2 (git 2.25.0) at 2024-10-16 08:27:24 -0400