1. 23 Jan, 2018 2 commits
    • Ville Syrjälä's avatar
      drm/i915: Reject odd pipe source width with double wide/dual link · 0574bd88
      Ville Syrjälä authored
      In order to guarantee that pipe_src_w/h matches the user mode h/vdisplay
      we must not adjust pipe_src_w to accommodate double wide/dual link.
      Instead just reject the mode outright.
      
      This will allows us to rely on crtc_state->mode for plane clipping.
      
      Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
      Signed-off-by: default avatarVille Syrjälä <ville.syrjala@linux.intel.com>
      Link: https://patchwork.freedesktop.org/patch/msgid/20171123190502.28449-2-ville.syrjala@linux.intel.comReviewed-by: default avatarDaniel Vetter <daniel.vetter@ffwll.ch>
      Reviewed-by: default avatarThierry Reding <treding@nvidia.com>
      0574bd88
    • Sean Paul's avatar
      drm/sun4i: Fix build warnings in sunxi_engine.h · a63b8e79
      Sean Paul authored
      Fixes the following build warnings:
      In file included from ../drivers/gpu/drm/sun4i/sun8i_mixer.h:18:0,
                       from ../drivers/gpu/drm/sun4i/sun8i_vi_scaler.h:13,
                       from ../drivers/gpu/drm/sun4i/sun8i_vi_scaler.c:12:
      ../drivers/gpu/drm/sun4i/sunxi_engine.h:36:16: warning: ‘struct drm_crtc_state’ declared inside parameter list will not be visible outside of this definition or declaration
               struct drm_crtc_state *old_state);
                      ^~~~~~~~~~~~~~
      ../drivers/gpu/drm/sun4i/sunxi_engine.h:53:15: warning: ‘struct drm_crtc_state’ declared inside parameter list will not be visible outside of this definition or declaration
              struct drm_crtc_state *state);
                     ^~~~~~~~~~~~~~
      In file included from ../drivers/gpu/drm/sun4i/sun8i_mixer.h:18:0,
                       from ../drivers/gpu/drm/sun4i/sun8i_ui_scaler.h:12,
                       from ../drivers/gpu/drm/sun4i/sun8i_ui_scaler.c:12:
      ../drivers/gpu/drm/sun4i/sunxi_engine.h:36:16: warning: ‘struct drm_crtc_state’ declared inside parameter list will not be visible outside of this definition or declaration
               struct drm_crtc_state *old_state);
                      ^~~~~~~~~~~~~~
      ../drivers/gpu/drm/sun4i/sunxi_engine.h:53:15: warning: ‘struct drm_crtc_state’ declared inside parameter list will not be visible outside of this definition or declaration
              struct drm_crtc_state *state);
                     ^~~~~~~~~~~~~~
      
      Fixes: 6b8562c8 ("drm/sun4i: engine: Create an atomic_begin
      callback")
      Fixes: 656e5f65 ("drm/sun4i: engine: Add a custom crtc
      atomic_check")
      Cc: Chen-Yu Tsai <wens@csie.org>
      Cc: Neil Armstrong <narmstrong@baylibre.com>
      Cc: Maxime Ripard <maxime.ripard@free-electrons.com>
      Cc: dri-devel@lists.freedesktop.org
      Cc: linux-arm-kernel@lists.infradead.org
      Signed-off-by: default avatarSean Paul <seanpaul@chromium.org>
      Signed-off-by: default avatarMaxime Ripard <maxime.ripard@free-electrons.com>
      Link: https://patchwork.freedesktop.org/patch/msgid/20180122174306.231609-1-seanpaul@chromium.org
      a63b8e79
  2. 22 Jan, 2018 13 commits
  3. 19 Jan, 2018 2 commits
  4. 18 Jan, 2018 3 commits
  5. 17 Jan, 2018 2 commits
  6. 16 Jan, 2018 4 commits
  7. 15 Jan, 2018 7 commits
  8. 14 Jan, 2018 7 commits
    • Linus Torvalds's avatar
      Linux 4.15-rc8 · a8750ddc
      Linus Torvalds authored
      a8750ddc
    • Linus Torvalds's avatar
      Merge branch 'x86-pti-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip · aaae98a8
      Linus Torvalds authored
      Pull x86 fixlet from Thomas Gleixner.
      
      Remove a warning about lack of compiler support for retpoline that most
      people can't do anything about, so it just annoys them needlessly.
      
      * 'x86-pti-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
        x86/retpoline: Remove compile time warning
      aaae98a8
    • Linus Torvalds's avatar
      Merge tag 'powerpc-4.15-7' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux · 6bb82119
      Linus Torvalds authored
      Pull powerpc fixes from Michael Ellerman:
       "One fix for an oops at boot if we take a hotplug interrupt before we
        are ready to handle it.
      
        The bulk is patches to implement mitigation for Meltdown, see the
        change logs for more details.
      
        Thanks to: Nicholas Piggin, Michael Neuling, Oliver O'Halloran, Jon
        Masters, Jose Ricardo Ziviani, David Gibson"
      
      * tag 'powerpc-4.15-7' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
        powerpc/powernv: Check device-tree for RFI flush settings
        powerpc/pseries: Query hypervisor for RFI flush settings
        powerpc/64s: Support disabling RFI flush with no_rfi_flush and nopti
        powerpc/64s: Add support for RFI flush of L1-D cache
        powerpc/64s: Convert slb_miss_common to use RFI_TO_USER/KERNEL
        powerpc/64: Convert fast_exception_return to use RFI_TO_USER/KERNEL
        powerpc/64: Convert the syscall exit path to use RFI_TO_USER/KERNEL
        powerpc/64s: Simple RFI macro conversions
        powerpc/64: Add macros for annotating the destination of rfid/hrfid
        powerpc/pseries: Add H_GET_CPU_CHARACTERISTICS flags & wrapper
        powerpc/pseries: Make RAS IRQ explicitly dependent on DLPAR WQ
      6bb82119
    • Thomas Gleixner's avatar
      x86/retpoline: Remove compile time warning · b8b9ce4b
      Thomas Gleixner authored
      Remove the compile time warning when CONFIG_RETPOLINE=y and the compiler
      does not have retpoline support. Linus rationale for this is:
      
        It's wrong because it will just make people turn off RETPOLINE, and the
        asm updates - and return stack clearing - that are independent of the
        compiler are likely the most important parts because they are likely the
        ones easiest to target.
      
        And it's annoying because most people won't be able to do anything about
        it. The number of people building their own compiler? Very small. So if
        their distro hasn't got a compiler yet (and pretty much nobody does), the
        warning is just annoying crap.
      
        It is already properly reported as part of the sysfs interface. The
        compile-time warning only encourages bad things.
      
      Fixes: 76b04384 ("x86/retpoline: Add initial retpoline support")
      Requested-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      Signed-off-by: default avatarThomas Gleixner <tglx@linutronix.de>
      Cc: David Woodhouse <dwmw@amazon.co.uk>
      Cc: Peter Zijlstra (Intel) <peterz@infradead.org>
      Cc: gnomes@lxorguk.ukuu.org.uk
      Cc: Rik van Riel <riel@redhat.com>
      Cc: Andi Kleen <ak@linux.intel.com>
      Cc: Josh Poimboeuf <jpoimboe@redhat.com>
      Cc: thomas.lendacky@amd.com
      Cc: Linus Torvalds <torvalds@linux-foundation.org>
      Cc: Jiri Kosina <jikos@kernel.org>
      Cc: Andy Lutomirski <luto@amacapital.net>
      Cc: Dave Hansen <dave.hansen@intel.com>
      Cc: Kees Cook <keescook@google.com>
      Cc: Tim Chen <tim.c.chen@linux.intel.com>
      Cc: Greg Kroah-Hartman <gregkh@linux-foundation.org>
      Link: https://lkml.kernel.org/r/CA+55aFzWgquv4i6Mab6bASqYXg3ErV3XDFEYf=GEcCDQg5uAtw@mail.gmail.com
      b8b9ce4b
    • Linus Torvalds's avatar
      Merge branch 'for-linus' of git://git.kernel.dk/linux-block · 9443c168
      Linus Torvalds authored
      Pull NVMe fix from Jens Axboe:
       "Just a single fix for nvme over fabrics that should go into 4.15"
      
      * 'for-linus' of git://git.kernel.dk/linux-block:
        nvme-fabrics: initialize default host->id in nvmf_host_default()
      9443c168
    • Linus Torvalds's avatar
      Merge branch 'x86-pti-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip · 40548c6b
      Linus Torvalds authored
      Pull x86 pti updates from Thomas Gleixner:
       "This contains:
      
         - a PTI bugfix to avoid setting reserved CR3 bits when PCID is
           disabled. This seems to cause issues on a virtual machine at least
           and is incorrect according to the AMD manual.
      
         - a PTI bugfix which disables the perf BTS facility if PTI is
           enabled. The BTS AUX buffer is not globally visible and causes the
           CPU to fault when the mapping disappears on switching CR3 to user
           space. A full fix which restores BTS on PTI is non trivial and will
           be worked on.
      
         - PTI bugfixes for EFI and trusted boot which make sure that the user
           space visible page table entries have the NX bit cleared
      
         - removal of dead code in the PTI pagetable setup functions
      
         - add PTI documentation
      
         - add a selftest for vsyscall to verify that the kernel actually
           implements what it advertises.
      
         - a sysfs interface to expose vulnerability and mitigation
           information so there is a coherent way for users to retrieve the
           status.
      
         - the initial spectre_v2 mitigations, aka retpoline:
      
            + The necessary ASM thunk and compiler support
      
            + The ASM variants of retpoline and the conversion of affected ASM
              code
      
            + Make LFENCE serializing on AMD so it can be used as speculation
              trap
      
            + The RSB fill after vmexit
      
         - initial objtool support for retpoline
      
        As I said in the status mail this is the most of the set of patches
        which should go into 4.15 except two straight forward patches still on
        hold:
      
         - the retpoline add on of LFENCE which waits for ACKs
      
         - the RSB fill after context switch
      
        Both should be ready to go early next week and with that we'll have
        covered the major holes of spectre_v2 and go back to normality"
      
      * 'x86-pti-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (28 commits)
        x86,perf: Disable intel_bts when PTI
        security/Kconfig: Correct the Documentation reference for PTI
        x86/pti: Fix !PCID and sanitize defines
        selftests/x86: Add test_vsyscall
        x86/retpoline: Fill return stack buffer on vmexit
        x86/retpoline/irq32: Convert assembler indirect jumps
        x86/retpoline/checksum32: Convert assembler indirect jumps
        x86/retpoline/xen: Convert Xen hypercall indirect jumps
        x86/retpoline/hyperv: Convert assembler indirect jumps
        x86/retpoline/ftrace: Convert ftrace assembler indirect jumps
        x86/retpoline/entry: Convert entry assembler indirect jumps
        x86/retpoline/crypto: Convert crypto assembler indirect jumps
        x86/spectre: Add boot time option to select Spectre v2 mitigation
        x86/retpoline: Add initial retpoline support
        objtool: Allow alternatives to be ignored
        objtool: Detect jumps to retpoline thunks
        x86/pti: Make unpoison of pgd for trusted boot work for real
        x86/alternatives: Fix optimize_nops() checking
        sysfs/cpu: Fix typos in vulnerability documentation
        x86/cpu/AMD: Use LFENCE_RDTSC in preference to MFENCE_RDTSC
        ...
      40548c6b
    • Peter Zijlstra's avatar
      x86,perf: Disable intel_bts when PTI · 99a9dc98
      Peter Zijlstra authored
      The intel_bts driver does not use the 'normal' BTS buffer which is exposed
      through the cpu_entry_area but instead uses the memory allocated for the
      perf AUX buffer.
      
      This obviously comes apart when using PTI because then the kernel mapping;
      which includes that AUX buffer memory; disappears. Fixing this requires to
      expose a mapping which is visible in all context and that's not trivial.
      
      As a quick fix disable this driver when PTI is enabled to prevent
      malfunction.
      
      Fixes: 385ce0ea ("x86/mm/pti: Add Kconfig")
      Reported-by: default avatarVince Weaver <vincent.weaver@maine.edu>
      Reported-by: default avatarRobert Święcki <robert@swiecki.net>
      Signed-off-by: default avatarPeter Zijlstra (Intel) <peterz@infradead.org>
      Signed-off-by: default avatarThomas Gleixner <tglx@linutronix.de>
      Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
      Cc: greg@kroah.com
      Cc: hughd@google.com
      Cc: luto@amacapital.net
      Cc: Vince Weaver <vince@deater.net>
      Cc: torvalds@linux-foundation.org
      Cc: stable@vger.kernel.org
      Link: https://lkml.kernel.org/r/20180114102713.GB6166@worktop.programming.kicks-ass.net
      99a9dc98