1. 29 Oct, 2012 3 commits
    • Will Deacon's avatar
      ARM: 7567/1: io: avoid GCC's offsettable addressing modes for halfword accesses · 7629a9f6
      Will Deacon authored
      Using the 'o' memory constraint in inline assembly can result in GCC
      generating invalid immediate offsets for memory access instructions with
      reduced addressing capabilities (i.e. smaller than 12-bit immediate
      offsets):
      
        http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54983
      
      As there is no constraint to specify the exact addressing mode we need,
      fallback to using 'Q' exclusively for halfword I/O accesses. This may
      emit an additional add instruction (using an extra register) in order
      to construct the address but it will always be accepted by GAS.
      Reported-by: default avatarBastian Hecht <hechtb@googlemail.com>
      Signed-off-by: default avatarWill Deacon <will.deacon@arm.com>
      Signed-off-by: default avatarRussell King <rmk+kernel@arm.linux.org.uk>
      7629a9f6
    • Paul Walmsley's avatar
      ARM: 7566/1: vfp: fix save and restore when running on pre-VFPv3 and CONFIG_VFPv3 set · 39141ddf
      Paul Walmsley authored
      After commit 846a1368 ("ARM: vfp: fix
      saving d16-d31 vfp registers on v6+ kernels"), the OMAP 2430SDP board
      started crashing during boot with omap2plus_defconfig:
      
      [    3.875122] mmcblk0: mmc0:e624 SD04G 3.69 GiB
      [    3.915954]  mmcblk0: p1
      [    4.086639] Internal error: Oops - undefined instruction: 0 [#1] SMP ARM
      [    4.093719] Modules linked in:
      [    4.096954] CPU: 0    Not tainted  (3.6.0-02232-g759e00b8 #570)
      [    4.103149] PC is at vfp_reload_hw+0x1c/0x44
      [    4.107666] LR is at __und_usr_fault_32+0x0/0x8
      
      It turns out that the context save/restore fix unmasked a latent bug
      in commit 5aaf2544 ("ARM: 6203/1: Make
      VFPv3 usable on ARMv6").  When CONFIG_VFPv3 is set, but the kernel is
      booted on a pre-VFPv3 core, the code attempts to save and restore the
      d16-d31 VFP registers.  These are only present on non-D16 VFPv3+, so
      this results in an undefined instruction exception.  The code didn't
      crash before commit 846a1368 because the save and restore code was
      only touching d0-d15, present on all VFP.
      
      Fix by implementing a request from Russell King to add a new HWCAP
      flag that affirmatively indicates the presence of the d16-d31
      registers:
      
         http://marc.info/?l=linux-arm-kernel&m=135013547905283&w=2
      
      and some feedback from Måns to clarify the name of the HWCAP flag.
      Signed-off-by: default avatarPaul Walmsley <paul@pwsan.com>
      Cc: Tony Lindgren <tony@atomide.com>
      Cc: Catalin Marinas <catalin.marinas@arm.com>
      Cc: Dave Martin <dave.martin@linaro.org>
      Cc: Måns Rullgård <mans.rullgard@linaro.org>
      Signed-off-by: default avatarRussell King <rmk+kernel@arm.linux.org.uk>
      39141ddf
    • Felipe Balbi 2's avatar
      ARM: 7565/1: sched: stop sched_clock() during suspend · 6a4dae5e
      Felipe Balbi 2 authored
      The scheduler imposes a requirement to sched_clock()
      which is to stop the clock during suspend, if we don't
      do that any RT thread will be rescheduled in the future
      which might cause any sort of problems.
      
      This became an issue on OMAP when we converted omap-i2c.c
      to use threaded IRQs, it turned out that depending on how
      much time we spent on suspend, the I2C IRQ thread would
      end up being rescheduled so far in the future that I2C
      transfers would timeout and, because omap_hsmmc depends
      on an I2C-connected device to detect if an MMC card is
      inserted in the slot, our rootfs would just vanish.
      
      arch/arm/kernel/sched_clock.c already had an optional
      implementation (sched_clock_needs_suspend()) which would
      handle scheduler's requirement properly, what this patch
      does is simply to make that implementation non-optional.
      
      Note that this has the side-effect that printk timings
      won't reflect the actual time spent on suspend so other
      methods to measure that will have to be used.
      
      This has been tested with beagleboard XM (OMAP3630) and
      pandaboard rev A3 (OMAP4430). Suspend to RAM is now working
      after this patch.
      
      Thanks to Kevin Hilman for helping out with debugging.
      Acked-by: default avatarKevin Hilman <khilman@ti.com>
      Acked-by: default avatarLinus Walleij <linus.walleij@linaro.org>
      Signed-off-by: default avatarFelipe Balbi <balbi@ti.com>
      Signed-off-by: default avatarRussell King <rmk+kernel@arm.linux.org.uk>
      6a4dae5e
  2. 22 Oct, 2012 4 commits
  3. 18 Oct, 2012 2 commits
  4. 14 Oct, 2012 6 commits
    • Linus Torvalds's avatar
      Linux 3.7-rc1 · ddffeb8c
      Linus Torvalds authored
      ddffeb8c
    • Linus Torvalds's avatar
      Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus · a5ef3f7d
      Linus Torvalds authored
      Pull MIPS update from Ralf Baechle:
       "Cleanups and fixes for breakage that occured earlier during this merge
        phase.  Also a few patches that didn't make the first pull request.
        Of those is the Alchemy work that merges code for many of the SOCs and
        evaluation boards thus among other code shrinkage, reduces the number
        of MIPS defconfigs by 5."
      
      * 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus: (22 commits)
        MIPS: SNI: Switch RM400 serial to SCCNXP driver
        MIPS: Remove unused empty_bad_pmd_table[] declaration.
        MIPS: MT: Remove kspd.
        MIPS: Malta: Fix section mismatch.
        MIPS: asm-offset.c: Delete unused irq_cpustat_t struct offsets.
        MIPS: Alchemy: Merge PB1100/1500 support into DB1000 code.
        MIPS: Alchemy: merge PB1550 support into DB1550 code
        MIPS: Alchemy: Single kernel for DB1200/1300/1550
        MIPS: Optimize TLB refill for RI/XI configurations.
        MIPS: proc: Cleanup printing of ASEs.
        MIPS: Hardwire detection of DSP ASE Rev 2 for systems, as required.
        MIPS: Add detection of DSP ASE Revision 2.
        MIPS: Optimize pgd_init and pmd_init
        MIPS: perf: Add perf functionality for BMIPS5000
        MIPS: perf: Split the Kconfig option CONFIG_MIPS_MT_SMP
        MIPS: perf: Remove unnecessary #ifdef
        MIPS: perf: Add cpu feature bit for PCI (performance counter interrupt)
        MIPS: perf: Change the "mips_perf_event" table unsupported indicator.
        MIPS: Align swapper_pg_dir to 64K for better TLB Refill code.
        vmlinux.lds.h: Allow architectures to add sections to the front of .bss
        ...
      a5ef3f7d
    • Linus Torvalds's avatar
      Merge branch 'modules-next' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux · d25282d1
      Linus Torvalds authored
      Pull module signing support from Rusty Russell:
       "module signing is the highlight, but it's an all-over David Howells frenzy..."
      
      Hmm "Magrathea: Glacier signing key". Somebody has been reading too much HHGTTG.
      
      * 'modules-next' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux: (37 commits)
        X.509: Fix indefinite length element skip error handling
        X.509: Convert some printk calls to pr_devel
        asymmetric keys: fix printk format warning
        MODSIGN: Fix 32-bit overflow in X.509 certificate validity date checking
        MODSIGN: Make mrproper should remove generated files.
        MODSIGN: Use utf8 strings in signer's name in autogenerated X.509 certs
        MODSIGN: Use the same digest for the autogen key sig as for the module sig
        MODSIGN: Sign modules during the build process
        MODSIGN: Provide a script for generating a key ID from an X.509 cert
        MODSIGN: Implement module signature checking
        MODSIGN: Provide module signing public keys to the kernel
        MODSIGN: Automatically generate module signing keys if missing
        MODSIGN: Provide Kconfig options
        MODSIGN: Provide gitignore and make clean rules for extra files
        MODSIGN: Add FIPS policy
        module: signature checking hook
        X.509: Add a crypto key parser for binary (DER) X.509 certificates
        MPILIB: Provide a function to read raw data into an MPI
        X.509: Add an ASN.1 decoder
        X.509: Add simple ASN.1 grammar compiler
        ...
      d25282d1
    • Matt Fleming's avatar
      x86, boot: Explicitly include autoconf.h for hostprogs · b6eea87f
      Matt Fleming authored
      The hostprogs need access to the CONFIG_* symbols found in
      include/generated/autoconf.h.  But commit abbf1590 ("UAPI: Partition
      the header include path sets and add uapi/ header directories") replaced
      $(LINUXINCLUDE) with $(USERINCLUDE) which doesn't contain the necessary
      include paths.
      
      This has the undesirable effect of breaking the EFI boot stub because
      the #ifdef CONFIG_EFI_STUB code in arch/x86/boot/tools/build.c is
      never compiled.
      
      It should also be noted that because $(USERINCLUDE) isn't exported by
      the top-level Makefile it's actually empty in arch/x86/boot/Makefile.
      
      Cc: H. Peter Anvin <hpa@zytor.com>
      Cc: Ingo Molnar <mingo@kernel.org>
      Acked-by: default avatarDavid Howells <dhowells@redhat.com>
      Signed-off-by: default avatarMatt Fleming <matt.fleming@intel.com>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      b6eea87f
    • Ingo Molnar's avatar
      perf: Fix UAPI fallout · 7d380c8f
      Ingo Molnar authored
      The UAPI commits forgot to test tooling builds such as tools/perf/,
      and this fixes the fallout.
      
      Manual conversion.
      Signed-off-by: default avatarIngo Molnar <mingo@kernel.org>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      7d380c8f
    • Linus Torvalds's avatar
      Merge branch 'late-for-linus' of git://git.linaro.org/people/rmk/linux-arm · 3d6ee36d
      Linus Torvalds authored
      Pull ARM update from Russell King:
       "This is the final round of stuff for ARM, left until the end of the
        merge window to reduce the number of conflicts.  This set contains the
        ARM part of David Howells UAPI changes, and a fix to the ordering of
        'select' statements in ARM Kconfig files (see the appropriate commit
        for why this happened - thanks to Andrew Morton for pointing out the
        problem.)
      
        I've left this as long as I dare for this window to avoid conflicts,
        and I regenerated the config patch yesterday, posting it to our
        mailing list for review and testing.  I have several acks which
        include successful test reports for it.
      
        However, today I notice we've got new conflicts with previously unseen
        code...  though that conflict should be trivial (it's my changes vs a
        one liner.)"
      
      * 'late-for-linus' of git://git.linaro.org/people/rmk/linux-arm:
        ARM: config: make sure that platforms are ordered by option string
        ARM: config: sort select statements alphanumerically
        UAPI: (Scripted) Disintegrate arch/arm/include/asm
      
      Fix up fairly conflict in arch/arm/Kconfig (the select re-organization
      vs recent addition of GENERIC_KERNEL_EXECVE)
      3d6ee36d
  5. 13 Oct, 2012 25 commits