Revision tags: v4.13.16 |
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#
400eeffa |
| 13-Nov-2017 |
Philip Derrin <philip@cog.systems> |
ARM: 8722/1: mm: make STRICT_KERNEL_RWX effective for LPAE Currently, for ARM kernels with CONFIG_ARM_LPAE and CONFIG_STRICT_KERNEL_RWX enabled, the 2MiB pages mapping the kernel cod
ARM: 8722/1: mm: make STRICT_KERNEL_RWX effective for LPAE Currently, for ARM kernels with CONFIG_ARM_LPAE and CONFIG_STRICT_KERNEL_RWX enabled, the 2MiB pages mapping the kernel code and rodata are writable. They are marked read-only in a software bit (L_PMD_SECT_RDONLY) but the hardware read-only bit is not set (PMD_SECT_AP2). For user mappings, the logic that propagates the software bit to the hardware bit is in set_pmd_at(); but for the kernel, section_update() writes the PMDs directly, skipping this logic. The fix is to set PMD_SECT_AP2 for read-only sections in section_update(), at the same time as L_PMD_SECT_RDONLY. Fixes: 1e3479225acb ("ARM: 8275/1: mm: fix PMD_SECT_RDONLY undeclared compile error") Signed-off-by: Philip Derrin <philip@cog.systems> Reported-by: Neil Dick <neil@cog.systems> Tested-by: Neil Dick <neil@cog.systems> Tested-by: Laura Abbott <labbott@redhat.com> Reviewed-by: Kees Cook <keescook@chromium.org> Cc: stable@vger.kernel.org Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
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Revision tags: v4.14, v4.13.5 |
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#
0d9ac162 |
| 04-Sep-2017 |
Vladimir Murzin <vladimir.murzin@arm.com> |
ARM: 8696/1: mm: Remove dead code in mem_init() The code in question checks memory constrains to set default policy for overcommit; however we support page size of 4K only thus condition
ARM: 8696/1: mm: Remove dead code in mem_init() The code in question checks memory constrains to set default policy for overcommit; however we support page size of 4K only thus condition is always evaluated to false. Remove that dead code. Signed-off-by: Vladimir Murzin <vladimir.murzin@arm.com> Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
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Revision tags: v4.13, v4.12, v4.10.17, v4.10.16, v4.10.15, v4.10.14, v4.10.13 |
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#
11ce4b33 |
| 25-Apr-2017 |
Grygorii Strashko <grygorii.strashko@linaro.org> |
ARM: 8672/1: mm: remove tasklist locking from update_sections_early() The below backtrace can be observed on -rt kernel with CONFIG_DEBUG_MODULE_RONX (4.9 kernel CONFIG_DEBUG_RODATA) opt
ARM: 8672/1: mm: remove tasklist locking from update_sections_early() The below backtrace can be observed on -rt kernel with CONFIG_DEBUG_MODULE_RONX (4.9 kernel CONFIG_DEBUG_RODATA) option enabled: BUG: sleeping function called from invalid context at kernel/locking/rtmutex.c:993 in_atomic(): 1, irqs_disabled(): 128, pid: 14, name: migration/0 1 lock held by migration/0/14: #0: (tasklist_lock){+.+...}, at: [<c01183e8>] update_sections_early+0x24/0xdc irq event stamp: 38 hardirqs last enabled at (37): [<c08f6f7c>] _raw_spin_unlock_irq+0x24/0x68 hardirqs last disabled at (38): [<c01fdfe8>] multi_cpu_stop+0xd8/0x138 softirqs last enabled at (0): [<c01303ec>] copy_process.part.5+0x238/0x1b64 softirqs last disabled at (0): [< (null)>] (null) Preemption disabled at: [<c01fe244>] cpu_stopper_thread+0x80/0x10c CPU: 0 PID: 14 Comm: migration/0 Not tainted 4.9.21-rt16-02220-g49e319c #15 Hardware name: Generic DRA74X (Flattened Device Tree) [<c0112014>] (unwind_backtrace) from [<c010d370>] (show_stack+0x10/0x14) [<c010d370>] (show_stack) from [<c049beb8>] (dump_stack+0xa8/0xd4) [<c049beb8>] (dump_stack) from [<c01631a0>] (___might_sleep+0x1bc/0x2ac) [<c01631a0>] (___might_sleep) from [<c08f7244>] (__rt_spin_lock+0x1c/0x30) [<c08f7244>] (__rt_spin_lock) from [<c08f77a4>] (rt_read_lock+0x54/0x68) [<c08f77a4>] (rt_read_lock) from [<c01183e8>] (update_sections_early+0x24/0xdc) [<c01183e8>] (update_sections_early) from [<c01184b0>] (__fix_kernmem_perms+0x10/0x1c) [<c01184b0>] (__fix_kernmem_perms) from [<c01fe010>] (multi_cpu_stop+0x100/0x138) [<c01fe010>] (multi_cpu_stop) from [<c01fe24c>] (cpu_stopper_thread+0x88/0x10c) [<c01fe24c>] (cpu_stopper_thread) from [<c015edc4>] (smpboot_thread_fn+0x174/0x31c) [<c015edc4>] (smpboot_thread_fn) from [<c015a988>] (kthread+0xf0/0x108) [<c015a988>] (kthread) from [<c0108818>] (ret_from_fork+0x14/0x3c) Freeing unused kernel memory: 1024K (c0d00000 - c0e00000) The stop_machine() is called with cpus = NULL from fix_kernmem_perms() and mark_rodata_ro() which means only one CPU will execute update_sections_early() while all other CPUs will spin and wait. Hence, it's safe to remove tasklist locking from update_sections_early(). As part of this change also mark functions which are local to this module as static. Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com> Acked-by: Laura Abbott <labbott@redhat.com> Acked-by: Kees Cook <keescook@chromium.org> Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
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Revision tags: v4.10.12, v4.10.11, v4.10.10, v4.10.9, v4.10.8, v4.10.7, v4.10.6, v4.10.5, v4.10.4, v4.10.3, v4.10.2, v4.10.1, v4.10 |
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#
29930025 |
| 08-Feb-2017 |
Ingo Molnar <mingo@kernel.org> |
sched/headers: Prepare for new header dependencies before moving code to <linux/sched/task.h> We are going to split <linux/sched/task.h> out of <linux/sched.h>, which will have to be pic
sched/headers: Prepare for new header dependencies before moving code to <linux/sched/task.h> We are going to split <linux/sched/task.h> out of <linux/sched.h>, which will have to be picked up from other headers and a couple of .c files. Create a trivial placeholder <linux/sched/task.h> file that just maps to <linux/sched.h> to make this patch obviously correct and bisectable. Include the new header in the files that are going to need it. Acked-by: Linus Torvalds <torvalds@linux-foundation.org> Cc: Mike Galbraith <efault@gmx.de> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: linux-kernel@vger.kernel.org Signed-off-by: Ingo Molnar <mingo@kernel.org>
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3f07c014 |
| 08-Feb-2017 |
Ingo Molnar <mingo@kernel.org> |
sched/headers: Prepare for new header dependencies before moving code to <linux/sched/signal.h> We are going to split <linux/sched/signal.h> out of <linux/sched.h>, which will have to be
sched/headers: Prepare for new header dependencies before moving code to <linux/sched/signal.h> We are going to split <linux/sched/signal.h> out of <linux/sched.h>, which will have to be picked up from other headers and a couple of .c files. Create a trivial placeholder <linux/sched/signal.h> file that just maps to <linux/sched.h> to make this patch obviously correct and bisectable. Include the new header in the files that are going to need it. Acked-by: Linus Torvalds <torvalds@linux-foundation.org> Cc: Mike Galbraith <efault@gmx.de> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: linux-kernel@vger.kernel.org Signed-off-by: Ingo Molnar <mingo@kernel.org>
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d4f4cf77 |
| 28-Feb-2017 |
Linus Torvalds <torvalds@linux-foundation.org> |
Merge branch 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm Pull ARM updates from Russell King: - nommu updates from Afzal Mohammed cleaning up the vectors support
Merge branch 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm Pull ARM updates from Russell King: - nommu updates from Afzal Mohammed cleaning up the vectors support - allow DMA memory "mapping" for nommu Benjamin Gaignard - fixing a correctness issue with R_ARM_PREL31 relocations in the module linker - add strlen() prototype for the decompressor - support for DEBUG_VIRTUAL from Florian Fainelli - adjusting memory bounds after memory reservations have been registered - unipher cache handling updates from Masahiro Yamada - initrd and Thumb Kconfig cleanups * 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm: (23 commits) ARM: mm: round the initrd reservation to page boundaries ARM: mm: clean up initrd initialisation ARM: mm: move initrd init code out of arm_memblock_init() ARM: 8655/1: improve NOMMU definition of pgprot_*() ARM: 8654/1: decompressor: add strlen prototype ARM: 8652/1: cache-uniphier: clean up active way setup code ARM: 8651/1: cache-uniphier: include <linux/errno.h> instead of <linux/types.h> ARM: 8650/1: module: handle negative R_ARM_PREL31 addends correctly ARM: 8649/2: nommu: remove Hivecs configuration is asm ARM: 8648/2: nommu: display vectors base ARM: 8647/2: nommu: dynamic exception base address setting ARM: 8646/1: mmu: decouple VECTORS_BASE from Kconfig ARM: 8644/1: Reduce "CPU: shutdown" message to debug level ARM: 8641/1: treewide: Replace uses of virt_to_phys with __pa_symbol ARM: 8640/1: Add support for CONFIG_DEBUG_VIRTUAL ARM: 8639/1: Define KERNEL_START and KERNEL_END ARM: 8638/1: mtd: lart: Rename partition defines to be prefixed with PART_ ARM: 8637/1: Adjust memory boundaries after reservations ARM: 8636/1: Cleanup sanity_check_meminfo ARM: add CPU_THUMB_CAPABLE to indicate possible Thumb support ...
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#
cdcc5fa0 |
| 16-Jan-2017 |
Russell King <rmk+kernel@armlinux.org.uk> |
ARM: mm: round the initrd reservation to page boundaries Round the initrd memblock reservation to page boundaries to prevent other data sharing the initrd pages. This prevents an alloca
ARM: mm: round the initrd reservation to page boundaries Round the initrd memblock reservation to page boundaries to prevent other data sharing the initrd pages. This prevents an allocation possibly overlapping with the initrd, which would later get trampled on in free_initrd_mem(). Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
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68b32f36 |
| 16-Jan-2017 |
Russell King <rmk+kernel@armlinux.org.uk> |
ARM: mm: clean up initrd initialisation Rather than repeatedly testing phys_initrd_size to see if the initrd is still enabled, return from the new function to avoid executing the rem
ARM: mm: clean up initrd initialisation Rather than repeatedly testing phys_initrd_size to see if the initrd is still enabled, return from the new function to avoid executing the remaining initialisation. Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
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39286248 |
| 16-Jan-2017 |
Russell King <rmk+kernel@armlinux.org.uk> |
ARM: mm: move initrd init code out of arm_memblock_init() Move the ARM initrd initialisation code out of arm_memblock_init() into its own function, so it can be cleaned up. Sign
ARM: mm: move initrd init code out of arm_memblock_init() Move the ARM initrd initialisation code out of arm_memblock_init() into its own function, so it can be cleaned up. Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
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#
d2ca5f24 |
| 29-Jan-2017 |
Afzal Mohammed <afzal.mohd.ma@gmail.com> |
ARM: 8646/1: mmu: decouple VECTORS_BASE from Kconfig For MMU configurations, VECTORS_BASE is always 0xffff0000, a macro definition will suffice. For no-MMU, exception base addre
ARM: 8646/1: mmu: decouple VECTORS_BASE from Kconfig For MMU configurations, VECTORS_BASE is always 0xffff0000, a macro definition will suffice. For no-MMU, exception base address is dynamically determined in subsequent patches. To preserve bisectability, now make the macro applicable for no-MMU scenario too. Thanks to 0-DAY kernel test infrastructure that found the bisectability issue. This macro will be restricted to MMU case upon dynamically determining exception base address for no-MMU. Once exception address is handled dynamically for no-MMU, VECTORS_BASE can be removed from Kconfig. Signed-off-by: afzal mohammed <afzal.mohd.ma@gmail.com> Tested-by: Vladimir Murzin <vladimir.murzin@arm.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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#
a09975bf |
| 14-Jan-2017 |
Florian Fainelli <f.fainelli@gmail.com> |
ARM: 8639/1: Define KERNEL_START and KERNEL_END In preparation for adding CONFIG_DEBUG_VIRTUAL support, define a set of common constants: KERNEL_START and KERNEL_END which abstract C
ARM: 8639/1: Define KERNEL_START and KERNEL_END In preparation for adding CONFIG_DEBUG_VIRTUAL support, define a set of common constants: KERNEL_START and KERNEL_END which abstract CONFIG_XIP_KERNEL vs. !CONFIG_XIP_KERNEL. Update the code where relevant. Acked-by: Russell King <rmk+kernel@armlinux.org.uk> Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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0f5bf6d0 |
| 06-Feb-2017 |
Laura Abbott <labbott@redhat.com> |
arch: Rename CONFIG_DEBUG_RODATA and CONFIG_DEBUG_MODULE_RONX Both of these options are poorly named. The features they provide are necessary for system security and should not be consid
arch: Rename CONFIG_DEBUG_RODATA and CONFIG_DEBUG_MODULE_RONX Both of these options are poorly named. The features they provide are necessary for system security and should not be considered debug only. Change the names to CONFIG_STRICT_KERNEL_RWX and CONFIG_STRICT_MODULE_RWX to better describe what these options do. Signed-off-by: Laura Abbott <labbott@redhat.com> Acked-by: Jessica Yu <jeyu@redhat.com> Signed-off-by: Kees Cook <keescook@chromium.org>
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Revision tags: v4.9, openbmc-4.4-20161121-1, v4.4.33, v4.4.32, v4.4.31, v4.4.30, v4.4.29, v4.4.28, v4.4.27, v4.7.10, openbmc-4.4-20161021-1, v4.7.9, v4.4.26, v4.7.8, v4.4.25, v4.4.24, v4.7.7, v4.8, v4.4.23, v4.7.6, v4.7.5, v4.4.22, v4.4.21, v4.7.4, v4.7.3, v4.4.20, v4.7.2, v4.4.19, openbmc-4.4-20160819-1, v4.7.1, v4.4.18, v4.4.17, openbmc-4.4-20160804-1, v4.4.16, v4.7, openbmc-4.4-20160722-1, openbmc-20160722-1, openbmc-20160713-1, v4.4.15, v4.6.4, v4.6.3, v4.4.14, v4.6.2, v4.4.13, openbmc-20160606-1, v4.6.1, v4.4.12, openbmc-20160521-1, v4.4.11, openbmc-20160518-1, v4.6, v4.4.10, openbmc-20160511-1, openbmc-20160505-1, v4.4.9, v4.4.8, v4.4.7, openbmc-20160329-2, openbmc-20160329-1, openbmc-20160321-1, v4.4.6, v4.5, v4.4.5, v4.4.4, v4.4.3, openbmc-20160222-1, v4.4.2, openbmc-20160212-1, openbmc-20160210-1, openbmc-20160202-2, openbmc-20160202-1, v4.4.1, openbmc-20160127-1 |
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#
64ac2e74 |
| 25-Jan-2016 |
Kees Cook <keescook@chromium.org> |
ARM: 8502/1: mm: mark section-aligned portion of rodata NX When rodata is large enough that it crosses a section boundary after the kernel text, mark the rest NX. This is as close to ful
ARM: 8502/1: mm: mark section-aligned portion of rodata NX When rodata is large enough that it crosses a section boundary after the kernel text, mark the rest NX. This is as close to full NX of rodata as we can get without splitting page tables or doing section alignment via CONFIG_DEBUG_ALIGN_RODATA. When the config is: CONFIG_DEBUG_RODATA=y # CONFIG_DEBUG_ALIGN_RODATA is not set Before: ---[ Kernel Mapping ]--- 0x80000000-0x80100000 1M RW NX SHD 0x80100000-0x80a00000 9M ro x SHD 0x80a00000-0xa0000000 502M RW NX SHD After: ---[ Kernel Mapping ]--- 0x80000000-0x80100000 1M RW NX SHD 0x80100000-0x80700000 6M ro x SHD 0x80700000-0x80a00000 3M ro NX SHD 0x80a00000-0xa0000000 502M RW NX SHD Signed-off-by: Kees Cook <keescook@chromium.org> Reviewed-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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25362dc4 |
| 25-Jan-2016 |
Kees Cook <keescook@chromium.org> |
ARM: 8501/1: mm: flip priority of CONFIG_DEBUG_RODATA The use of CONFIG_DEBUG_RODATA is generally seen as an essential part of kernel self-protection: http://www.openwall.com/lists/k
ARM: 8501/1: mm: flip priority of CONFIG_DEBUG_RODATA The use of CONFIG_DEBUG_RODATA is generally seen as an essential part of kernel self-protection: http://www.openwall.com/lists/kernel-hardening/2015/11/30/13 Additionally, its name has grown to mean things beyond just rodata. To get ARM closer to this, we ought to rearrange the names of the configs that control how the kernel protects its memory. What was called CONFIG_ARM_KERNMEM_PERMS is realy doing the work that other architectures call CONFIG_DEBUG_RODATA. This redefines CONFIG_DEBUG_RODATA to actually do the bulk of the ROing (and NXing). In the place of the old CONFIG_DEBUG_RODATA, use CONFIG_DEBUG_ALIGN_RODATA, since that's what the option does: adds section alignment for making rodata explicitly NX, as arm does not split the page tables like arm64 does without _ALIGN_RODATA. Also adds human readable names to the sections so I could more easily debug my typos, and makes CONFIG_DEBUG_RODATA default "y" for CPU_V7. Results in /sys/kernel/debug/kernel_page_tables for each config state: # CONFIG_DEBUG_RODATA is not set # CONFIG_DEBUG_ALIGN_RODATA is not set ---[ Kernel Mapping ]--- 0x80000000-0x80900000 9M RW x SHD 0x80900000-0xa0000000 503M RW NX SHD CONFIG_DEBUG_RODATA=y CONFIG_DEBUG_ALIGN_RODATA=y ---[ Kernel Mapping ]--- 0x80000000-0x80100000 1M RW NX SHD 0x80100000-0x80700000 6M ro x SHD 0x80700000-0x80a00000 3M ro NX SHD 0x80a00000-0xa0000000 502M RW NX SHD CONFIG_DEBUG_RODATA=y # CONFIG_DEBUG_ALIGN_RODATA is not set ---[ Kernel Mapping ]--- 0x80000000-0x80100000 1M RW NX SHD 0x80100000-0x80a00000 9M ro x SHD 0x80a00000-0xa0000000 502M RW NX SHD Signed-off-by: Kees Cook <keescook@chromium.org> Reviewed-by: Laura Abbott <labbott@fedoraproject.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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#
6660800f |
| 12-Jan-2016 |
Russell King <rmk+kernel@arm.linux.org.uk> |
Merge branch 'devel-stable' into for-linus
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Revision tags: openbmc-20160120-1, v4.4, openbmc-20151217-1, openbmc-20151210-1, openbmc-20151202-1, openbmc-20151123-1, openbmc-20151118-1, openbmc-20151104-1, v4.3, openbmc-20151102-1, openbmc-20151028-1 |
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09414d00 |
| 01-Oct-2015 |
Ard Biesheuvel <ard.biesheuvel@linaro.org> |
ARM: only consider memblocks with NOMAP cleared for linear mapping Take the new memblock attribute MEMBLOCK_NOMAP into account when deciding whether a certain region is or should be cove
ARM: only consider memblocks with NOMAP cleared for linear mapping Take the new memblock attribute MEMBLOCK_NOMAP into account when deciding whether a certain region is or should be covered by the kernel direct mapping. Tested-by: Ryan Harkin <ryan.harkin@linaro.org> Reviewed-by: Matt Fleming <matt@codeblueprint.co.uk> Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
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08925c2f |
| 30-Nov-2015 |
Laura Abbott <labbott@redhat.com> |
ARM: 8464/1: Update all mm structures with section adjustments Currently, when updating section permissions to mark areas RO or NX, the only mm updated is current->mm. This is working of
ARM: 8464/1: Update all mm structures with section adjustments Currently, when updating section permissions to mark areas RO or NX, the only mm updated is current->mm. This is working off the assumption that there are no additional mm structures at the time. This may not always hold true. (Example: calling modprobe early will trigger a fork/exec). Ensure all mm structres get updated with the new section information. Reviewed-by: Kees Cook <keescook@chromium.org> Signed-off-by: Laura Abbott <labbott@fedoraproject.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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Revision tags: v4.3-rc1, v4.2, v4.2-rc8, v4.2-rc7, v4.2-rc6, v4.2-rc5, v4.2-rc4, v4.2-rc3, v4.2-rc2, v4.2-rc1, v4.1, v4.1-rc8, v4.1-rc7 |
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24bbd929 |
| 01-Jun-2015 |
Ard Biesheuvel <ard.biesheuvel@linaro.org> |
of/fdt: split off FDT self reservation from memreserve processing This splits off the reservation of the memory occupied by the FDT binary itself from the processing of the memory reserv
of/fdt: split off FDT self reservation from memreserve processing This splits off the reservation of the memory occupied by the FDT binary itself from the processing of the memory reservations it contains. This is necessary because the physical address of the FDT, which is needed to perform the reservation, may not be known to the FDT driver core, i.e., it may be mapped outside the linear direct mapping, in which case __pa() returns a bogus value. Cc: Russell King <linux@arm.linux.org.uk> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mackerras <paulus@samba.org> Acked-by: Rob Herring <robh@kernel.org> Acked-by: Mark Rutland <mark.rutland@arm.com> Acked-by: Catalin Marinas <catalin.marinas@arm.com> Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
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#
bb0fd7ab |
| 14-Apr-2015 |
Linus Torvalds <torvalds@linux-foundation.org> |
Merge branch 'for-linus' of git://ftp.arm.linux.org.uk/~rmk/linux-arm Pull ARM updates from Russell King: "Included in this update are both some long term fixes and some new featu
Merge branch 'for-linus' of git://ftp.arm.linux.org.uk/~rmk/linux-arm Pull ARM updates from Russell King: "Included in this update are both some long term fixes and some new features. Fixes: - An integer overflow in the calculation of ELF_ET_DYN_BASE. - Avoiding OOMs for high-order IOMMU allocations - SMP requires the data cache to be enabled for synchronisation primitives to work, so prevent the CPU_DCACHE_DISABLE option being visible on SMP builds. - A bug going back 10+ years in the noMMU ARM94* CPU support code, where it corrupts registers. Found by folk getting Linux running on their cameras. - Versatile Express needs an errata workaround enabled for CPU hot-unplug to work. Features: - Clean up module linker by handling out of range relocations separately from relocation cases we don't handle. - Fix a long term bug in the pci_mmap_page_range() code, which we hope won't impact userspace (we hope there's no users of the existing broken interface.) - Don't map DMA coherent allocations when we don't have a MMU. - Drop experimental status for SMP_ON_UP. - Warn when DT doesn't specify ePAPR mandatory cache properties. - Add documentation concerning how we find the start of physical memory for AUTO_ZRELADDR kernels, detailing why we have chosen the mask and the implications of changing it. - Updates from Ard Biesheuvel to address some issues with large kernels (such as allyesconfig) failing to link. - Allow hibernation to work on modern (ARMv7) CPUs - this appears to have never worked in the past on these CPUs. - Enable IRQ_SHOW_LEVEL, which changes the /proc/interrupts output format (hopefully without userspace breaking... let's hope that if it causes someone a problem, they tell us.) - Fix tegra-ahb DT offsets. - Rework ARM errata 643719 code (and ARMv7 flush_cache_louis()/ flush_dcache_all()) code to be more efficient, and enable this errata workaround by default for ARMv7+SMP CPUs. This complements the Versatile Express fix above. - Rework ARMv7 context code for errata 430973, so that only Cortex A8 CPUs are impacted by the branch target buffer flush when this errata is enabled. Also update the help text to indicate that all r1p* A8 CPUs are impacted. - Switch ARM to the generic show_mem() implementation, it conveys all the information which we were already reporting. - Prevent slow timer sources being used for udelay() - timers running at less than 1MHz are not useful for this, and can cause udelay() to return immediately, without any wait. Using such a slow timer is silly. - VDSO support for 32-bit ARM, mainly for gettimeofday() using the ARM architected timer. - Perf support for Scorpion performance monitoring units" vdso semantic conflict fixed up as per linux-next. * 'for-linus' of git://ftp.arm.linux.org.uk/~rmk/linux-arm: (52 commits) ARM: update errata 430973 documentation to cover Cortex A8 r1p* ARM: ensure delay timer has sufficient accuracy for delays ARM: switch to use the generic show_mem() implementation ARM: proc-v7: avoid errata 430973 workaround for non-Cortex A8 CPUs ARM: enable ARM errata 643719 workaround by default ARM: cache-v7: optimise test for Cortex A9 r0pX devices ARM: cache-v7: optimise branches in v7_flush_cache_louis ARM: cache-v7: consolidate initialisation of cache level index ARM: cache-v7: shift CLIDR to extract appropriate field before masking ARM: cache-v7: use movw/movt instructions ARM: allow 16-bit instructions in ALT_UP() ARM: proc-arm94*.S: fix setup function ARM: vexpress: fix CPU hotplug with CT9x4 tile. ARM: 8276/1: Make CPU_DCACHE_DISABLE depend on !SMP ARM: 8335/1: Documentation: DT bindings: Tegra AHB: document the legacy base address ARM: 8334/1: amba: tegra-ahb: detect and correct bogus base address ARM: 8333/1: amba: tegra-ahb: fix register offsets in the macros ARM: 8339/1: Enable CONFIG_GENERIC_IRQ_SHOW_LEVEL ARM: 8338/1: kexec: Relax SMP validation to improve DT compatibility ARM: 8337/1: mm: Do not invoke OOM for higher order IOMMU DMA allocations ...
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Revision tags: v4.1-rc6, v4.1-rc5, v4.1-rc4, v4.1-rc3, v4.1-rc2, v4.1-rc1 |
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d30eae47 |
| 14-Apr-2015 |
Vladimir Murzin <vladimir.murzin@arm.com> |
arm: add support for memtest Add support for memtest command line option. Signed-off-by: Vladimir Murzin <vladimir.murzin@arm.com> Acked-by: Will Deacon <will.deacon@arm.com>
arm: add support for memtest Add support for memtest command line option. Signed-off-by: Vladimir Murzin <vladimir.murzin@arm.com> Acked-by: Will Deacon <will.deacon@arm.com> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Russell King <rmk@arm.linux.org.uk> Cc: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Revision tags: v4.0, v4.0-rc7, v4.0-rc6 |
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37463be8 |
| 26-Mar-2015 |
Russell King <rmk+kernel@arm.linux.org.uk> |
ARM: switch to use the generic show_mem() implementation Switch ARM to use the generic show_mem() implementation, which displays the statistics from the mm zone rather than walking the p
ARM: switch to use the generic show_mem() implementation Switch ARM to use the generic show_mem() implementation, which displays the statistics from the mm zone rather than walking the page arrays. Acked-by: Mel Gorman <mgorman <mgorman@suse.de> Tested-by: Gregory Fong <gregory.0xf0@gmail.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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ed8f8ce3 |
| 10-Feb-2015 |
Russell King <rmk+kernel@arm.linux.org.uk> |
Merge branches 'debug', 'fixes', 'l2c' (early part), 'misc' and 'sa1100' into for-next
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Revision tags: v4.0-rc5, v4.0-rc4, v4.0-rc3, v4.0-rc2, v4.0-rc1, v3.19, v3.19-rc7, v3.19-rc6, v3.19-rc5 |
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99a468d7 |
| 16-Jan-2015 |
George G. Davis <ggdavisiv@gmail.com> |
ARM: 8286/1: mm: Fix dma_contiguous_reserve comment DMA contiguous allocations have been able to use highmem since commit "95b0e65 ARM: mm: don't limit default CMA region only to low mem
ARM: 8286/1: mm: Fix dma_contiguous_reserve comment DMA contiguous allocations have been able to use highmem since commit "95b0e65 ARM: mm: don't limit default CMA region only to low memory" but a comment still notes the earlier "low memory" limitation. Update the comment to remove the low memory limitation and fix the s/contigouos/contiguous/ typo while we're at it. Signed-off-by: George G. Davis <george_davis@mentor.com> Acked-by: Marek Szyprowski <m.szyprowski@samsung.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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Revision tags: v3.19-rc4 |
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1e347922 |
| 09-Jan-2015 |
Victor Kamensky <victor.kamensky@linaro.org> |
ARM: 8275/1: mm: fix PMD_SECT_RDONLY undeclared compile error In v3.19-rc3 tree when CONFIG_ARM_LPAE and CONFIG_DEBUG_RODATA are enabled image failed to compile with the following error:
ARM: 8275/1: mm: fix PMD_SECT_RDONLY undeclared compile error In v3.19-rc3 tree when CONFIG_ARM_LPAE and CONFIG_DEBUG_RODATA are enabled image failed to compile with the following error: arch/arm/mm/init.c:661:14: error: ‘PMD_SECT_RDONLY’ undeclared here (not in a function) It seems that '80d6b0c ARM: mm: allow text and rodata sections to be read-only' and 'ded9477 ARM: 8109/1: mm: Modify pte_write and pmd_write logic for LPAE' commits crossed. 80d6b0c uses PMD_SECT_RDONLY macro but ded9477 renames it and uses software bits L_PMD_SECT_RDONLY instead. Fix is to use L_PMD_SECT_RDONLY instead PMD_SECT_RDONLY as ded9477 does in another places. Signed-off-by: Victor Kamensky <victor.kamensky@linaro.org> Acked-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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26ceb127 |
| 12-Dec-2014 |
Linus Torvalds <torvalds@linux-foundation.org> |
Merge branch 'for-linus' of git://ftp.arm.linux.org.uk/~rmk/linux-arm Pull ARM updates from Russell King: "The major updates included in this update are: - Clang compatible
Merge branch 'for-linus' of git://ftp.arm.linux.org.uk/~rmk/linux-arm Pull ARM updates from Russell King: "The major updates included in this update are: - Clang compatible stack pointer accesses by Behan Webster. - SA11x0 updates from Dmitry Eremin-Solenikov. - kgdb handling of breakpoints with read-only text/modules - Support for Privileged-no-execute feature on ARMv7 to prevent userspace code execution by the kernel. - AMBA primecell bus handling of irq-safe runtime PM - Unwinding support for memset/memzero/memmove/memcpy functions - VFP fixes for Krait CPUs and improvements in detecting the VFP architecture - A number of code cleanups (using pr_*, removing or reducing the severity of a couple of kernel messages, splitting ftrace asm code out to a separate file, etc.) - Add machine name to stack dump output" * 'for-linus' of git://ftp.arm.linux.org.uk/~rmk/linux-arm: (62 commits) ARM: 8247/2: pcmcia: sa1100: make use of device clock ARM: 8246/2: pcmcia: sa1111: provide device clock ARM: 8245/1: pcmcia: soc-common: enable/disable socket clocks ARM: 8244/1: fbdev: sa1100fb: make use of device clock ARM: 8243/1: sa1100: add a clock alias for sa1111 pcmcia device ARM: 8242/1: sa1100: add cpu clock ARM: 8221/1: PJ4: allow building in Thumb-2 mode ARM: 8234/1: sa1100: reorder IRQ handling code ARM: 8233/1: sa1100: switch to hwirq usage ARM: 8232/1: sa1100: merge GPIO multiplexer IRQ to "normal" irq domain ARM: 8231/1: sa1100: introduce irqdomains support ARM: 8230/1: sa1100: shift IRQs by one ARM: 8229/1: sa1100: replace irq numbers with names in irq driver ARM: 8228/1: sa1100: drop entry-macro.S ARM: 8227/1: sa1100: switch to MULTI_IRQ_HANDLER ARM: 8241/1: Update processor_modes for hyp and monitor mode ARM: 8240/1: MCPM: document mcpm_sync_init() ARM: 8239/1: Introduce {set,clear}_pte_bit ARM: 8238/1: mm: Refine set_memory_* functions ARM: 8237/1: fix flush_pfn_alias ...
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