1. 13 Feb, 2013 10 commits
  2. 08 Feb, 2013 25 commits
    • Dave Airlie's avatar
      Merge branch 'for-airlied' of git://people.freedesktop.org/~mlankhorst/linux into drm-next · b9e50713
      Dave Airlie authored
      TTM reservations changes, preparing for new reservation mutex system.
      
      * 'for-airlied' of git://people.freedesktop.org/~mlankhorst/linux:
        drm/ttm: unexport ttm_bo_wait_unreserved
        drm/nouveau: use ttm_bo_reserve_slowpath in validate_init, v2
        drm/ttm: use ttm_bo_reserve_slowpath_nolru in ttm_eu_reserve_buffers, v2
        drm/ttm: add ttm_bo_reserve_slowpath
        drm/ttm: cleanup ttm_eu_reserve_buffers handling
        drm/ttm: remove lru_lock around ttm_bo_reserve
        drm/nouveau: increase reservation sequence every retry
        drm/vmwgfx: always use ttm_bo_is_reserved
      b9e50713
    • Daniel Kurtz's avatar
      drm: make frame duration time calculation more precise · 85a7ce67
      Daniel Kurtz authored
      It is a bit more precise to compute the total number of pixels first and
      then divide, rather than multiplying the line pixel count by the
      already-rounded line duration.
      Signed-off-by: default avatarDaniel Kurtz <djkurtz@chromium.org>
      Signed-off-by: default avatarDave Airlie <airlied@redhat.com>
      85a7ce67
    • Bjorn Helgaas's avatar
      drm/pci: Use PCI Express Capability accessors · dd66cc2e
      Bjorn Helgaas authored
      Use PCI Express Capability access functions to simplify this code a bit.
      For non-PCIe devices or pre-PCIe 3.0 devices that don't implement the Link
      Capabilities 2 register, pcie_capability_read_dword() reads a zero.
      
      Since we're only testing whether the bits we care about are set, there's no
      need to mask out the other bits we *don't* care about.
      Signed-off-by: default avatarBjorn Helgaas <bhelgaas@google.com>
      Signed-off-by: default avatarDave Airlie <airlied@redhat.com>
      dd66cc2e
    • Bjorn Helgaas's avatar
      drm/pci: Set all supported speeds in speed cap mask for pre-3.0 devices · f8acf6f4
      Bjorn Helgaas authored
      For devices that conform to PCIe r3.0 and have a Link Capabilities 2
      register, we test and report every bit in the Supported Link Speeds Vector
      field.  For a device that supports both 2.5GT/s and 5.0GT/s, we set both
      DRM_PCIE_SPEED_25 and DRM_PCIE_SPEED_50 in the returned mask.
      
      For pre-r3.0 devices, the Link Capabilities 0010b encoding
      (PCI_EXP_LNKCAP_SLS_5_0GB) means that both 5.0GT/s and 2.5GT/s are
      supported, so set both DRM_PCIE_SPEED_25 and DRM_PCIE_SPEED_50 in this
      case as well.
      Signed-off-by: default avatarBjorn Helgaas <bhelgaas@google.com>
      Signed-off-by: default avatarDave Airlie <airlied@redhat.com>
      f8acf6f4
    • Bjorn Helgaas's avatar
      drm/pci: Use the standard #defines for PCIe Link Capability bits · 9fe0423e
      Bjorn Helgaas authored
      Use the standard #defines rather than bare numbers for the PCIe Link
      Capabilities speed bits.
      Signed-off-by: default avatarBjorn Helgaas <bhelgaas@google.com>
      Signed-off-by: default avatarDave Airlie <airlied@redhat.com>
      9fe0423e
    • Thierry Reding's avatar
      drm: Allow vblank support without DRIVER_HAVE_IRQ · 03f6509d
      Thierry Reding authored
      Drivers that register interrupt handlers without the DRM core helpers
      don't initialize the .irq_enabled field and drm_dev_to_irq() may fail
      when called on them. This shouldn't preclude them from implementing
      the vblank IOCTL.
      Signed-off-by: default avatarThierry Reding <thierry.reding@avionic-design.de>
      Signed-off-by: default avatarDave Airlie <airlied@redhat.com>
      03f6509d
    • Aaron Plattner's avatar
      drm/radeon: use prime helpers · 1e6d17a5
      Aaron Plattner authored
      Simplify the Radeon prime implementation by using the default behavior provided
      by drm_gem_prime_import and drm_gem_prime_export.
      
      v2:
      - Rename functions to radeon_gem_prime_get_sg_table and
        radeon_gem_prime_import_sg_table.
      - Delete the now-unused vmapping_count variable.
      Signed-off-by: default avatarAaron Plattner <aplattner@nvidia.com>
      Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
      Cc: David Airlie <airlied@linux.ie>
      Signed-off-by: default avatarDave Airlie <airlied@redhat.com>
      1e6d17a5
    • Aaron Plattner's avatar
      drm/nouveau: use prime helpers · ab9ccb96
      Aaron Plattner authored
      Simplify the Nouveau prime implementation by using the default behavior provided
      by drm_gem_prime_import and drm_gem_prime_export.
      
      v2: Rename functions to nouveau_gem_prime_get_sg_table and
      nouveau_gem_prime_import_sg_table.
      Signed-off-by: default avatarAaron Plattner <aplattner@nvidia.com>
      Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
      Cc: David Airlie <airlied@linux.ie>
      Signed-off-by: default avatarDave Airlie <airlied@redhat.com>
      ab9ccb96
    • Aaron Plattner's avatar
      drm: add prime helpers · 89177644
      Aaron Plattner authored
      Instead of reimplementing all of the dma_buf functionality in every driver,
      create helpers drm_prime_import and drm_prime_export that implement them in
      terms of new, lower-level hook functions:
      
        gem_prime_pin: callback when a buffer is created, used to pin buffers into GTT
        gem_prime_get_sg_table: convert a drm_gem_object to an sg_table for export
        gem_prime_import_sg_table: convert an sg_table into a drm_gem_object
        gem_prime_vmap, gem_prime_vunmap: map and unmap an object
      
      These hooks are optional; drivers can opt in by using drm_gem_prime_import and
      drm_gem_prime_export as the .gem_prime_import and .gem_prime_export fields of
      struct drm_driver.
      
      v2:
      - Drop .begin_cpu_access.  None of the drivers this code replaces implemented
        it.  Having it here was a leftover from when I was trying to include i915 in
        this rework.
      - Use mutex_lock instead of mutex_lock_interruptible, as these three drivers
        did.  This patch series shouldn't change that behavior.
      - Rename helpers to gem_prime_get_sg_table and gem_prime_import_sg_table.
        Rename struct sg_table* variables to 'sgt' for clarity.
      - Update drm.tmpl for these new hooks.
      
      v3:
      - Pass the vaddr down to the driver.  This lets drivers that just call vunmap on
        the pointer avoid having to store the pointer in their GEM private structures.
      - Move documentation into a /** DOC */ comment in drm_prime.c and include it in
        drm.tmpl with a !P line.  I tried to use !F lines to include documentation of
        the individual functions from drmP.h, but the docproc / kernel-doc scripts
        barf on that file, so hopefully this is good enough for now.
      - apply refcount fix from commit be8a42ae
        ("drm/prime: drop reference on imported dma-buf come from gem")
      Signed-off-by: default avatarAaron Plattner <aplattner@nvidia.com>
      Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
      Cc: David Airlie <airlied@linux.ie>
      Signed-off-by: default avatarDave Airlie <airlied@redhat.com>
      89177644
    • Rob Clark's avatar
      drm/i2c: give i2c it's own Kconfig · 6504d0d9
      Rob Clark authored
      Move this out of nouveau directory.  As we start to add more encoder
      slaves used by other drivers, it makes sense to put the Kconfig bits in
      one place.
      Signed-off-by: default avatarRob Clark <robdclark@gmail.com>
      Signed-off-by: default avatarDave Airlie <airlied@redhat.com>
      6504d0d9
    • Dave Airlie's avatar
      Merge branch 'drm-next-3.9' of git://people.freedesktop.org/~agd5f/linux into drm-next · 73ccd696
      Dave Airlie authored
      Alex writes:
      - CS ioctl cleanup and unification.  Unification of a lot of functionality
      that was duplicated across multiple generates of hardware.
      - Add support for Oland GPUs
      - Deprecate UMS support.  Mesa and the ddx dropped support for UMS and
      apparently very few people still use it since the UMS CS ioctl was broken
      for several kernels and no one reported it.  It was fixed in 3.8/stable.
      - Rework GPU reset.  Use the status registers to determine what blocks
      to reset.  This better matches the recommended reset programming model.
      This also allows us to properly reset blocks besides GFX and DMA.
      - Switch the VM set page code to use an IB rather than the ring.  This
      fixes overflow issues when doing large page table updates using a small
      ring like DMA.
      - Several small cleanups and bug fixes.
      
      * 'drm-next-3.9' of git://people.freedesktop.org/~agd5f/linux: (38 commits)
        drm/radeon/dce6: fix display powergating
        drm/radeon: add Oland pci ids
        drm/radeon: radeon-asic updates for Oland
        drm/radeon: add ucode loading support for Oland
        drm/radeon: fill in gpu init for Oland
        drm/radeon: add Oland chip family
        drm/radeon: switch back to using the DMA ring for VM PT updates
        drm/radeon: use IBs for VM page table updates v2
        drm/radeon: don't reset the MC on IGPs/APUs
        drm/radeon: use the reset mask to determine if rings are hung
        drm/radeon: halt engines before disabling MC (si)
        drm/radeon: halt engines before disabling MC (cayman/TN)
        drm/radeon: halt engines before disabling MC (evergreen)
        drm/radeon: halt engines before disabling MC (6xx/7xx)
        drm/radeon: use status regs to determine what to reset (si)
        drm/radeon: use status regs to determine what to reset (cayman)
        drm/radeon: use status regs to determine what to reset (evergreen)
        drm/radeon: use status regs to determine what to reset (6xx/7xx)
        drm/radeon: rework GPU reset on cayman/TN
        drm/radeon: rework GPU reset on cayman/TN
        ...
      73ccd696
    • Dave Airlie's avatar
      Merge tag 'of_videomode_helper' of git://git.pengutronix.de/git/str/linux into drm-next · ed914f69
      Dave Airlie authored
      videomode helpers for of + devicetree stuff, required for new kms drivers
      
      (not the fbdev maintainer).
      
      * tag 'of_videomode_helper' of git://git.pengutronix.de/git/str/linux:
        drm_modes: add of_videomode helpers
        drm_modes: add videomode helpers
        fbmon: add of_videomode helpers
        fbmon: add videomode helpers
        video: add of helper for display timings/videomode
        video: add display_timing and videomode
        viafb: rename display_timing to via_display_timing
      ed914f69
    • Dave Airlie's avatar
      Merge branch 'udl-fixes' into drm-next · bb0f78dd
      Dave Airlie authored
      Fixes for usb/udl devices
      * udl-fixes:
        drm/udl: disable fb_defio by default
        drm/udl: Inline memcmp() for RLE compression of xfer
        drm/udl: make usage as a console safer
        drm/usb: bind driver to correct device
      bb0f78dd
    • Dave Airlie's avatar
      Merge branch 'console-fixes' into drm-next · 62cd2fa8
      Dave Airlie authored
      (not the fbcon maintainer pull 2)
      
      fix bug in vgacon on bootup and fbcon losing fonts on startup.
      
      * console-fixes: (50 commits)
        fbcon: don't lose the console font across generic->chip driver switch
        vgacon/vt: clear buffer attributes when we load a 512 character font (v2)
      62cd2fa8
    • Dave Airlie's avatar
      Merge branch 'fbcon-locking-fixes' of ssh://people.freedesktop.org/~airlied/linux into drm-next · 6dc1c49d
      Dave Airlie authored
      This pulls in most of Linus tree up to -rc6, this fixes the worst lockdep
      reported issues and re-enables fbcon lockdep.
      
      (not the fbcon maintainer)
      * 'fbcon-locking-fixes' of ssh://people.freedesktop.org/~airlied/linux: (529 commits)
        Revert "Revert "console: implement lockdep support for console_lock""
        fbcon: fix locking harder
        fb: Yet another band-aid for fixing lockdep mess
        fb: rework locking to fix lock ordering on takeover
      6dc1c49d
    • Dave Airlie's avatar
      Revert "Revert "console: implement lockdep support for console_lock"" · 5845b81b
      Dave Airlie authored
      This reverts commit ff0d05bf.
      
      Now that we have all the locking fixes in place, we can revert the
      revert. This re-enables lockdep tracking for the console lock,
      daee7797.
      Signed-off-by: default avatarDave Airlie <airlied@redhat.com>
      5845b81b
    • Dave Airlie's avatar
      fbcon: fix locking harder · 054430e7
      Dave Airlie authored
      Okay so Alan's patch handled the case where there was no registered fbcon,
      however the other path entered in set_con2fb_map pit.
      
      In there we called fbcon_takeover, but we also took the console lock in a couple
      of places. So push the console lock out to the callers of set_con2fb_map,
      
      this means fbmem and switcheroo needed to take the lock around the fb notifier
      entry points that lead to this.
      
      This should fix the efifb regression seen by Maarten.
      Tested-by: default avatarMaarten Lankhorst <maarten.lankhorst@canonical.com>
      Tested-by: default avatarLu Hua <huax.lu@intel.com>
      Signed-off-by: default avatarDave Airlie <airlied@redhat.com>
      054430e7
    • Takashi Iwai's avatar
      fb: Yet another band-aid for fixing lockdep mess · e93a9a86
      Takashi Iwai authored
      I've still got lockdep warnings even after Alan's patch, and it seems that
      yet more band aids are required to paper over similar paths for
      unbind_con_driver() and unregister_con_driver().  After this hack, lockdep
      warnings are finally gone.
      Signed-off-by: default avatarTakashi Iwai <tiwai@suse.de>
      Cc: Alan Cox <alan@linux.intel.com>
      Cc: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
      Cc: Jiri Kosina <jkosina@suse.cz>
      Cc: stable <stable@vger.kernel.org>
      Tested-by: default avatarSedat Dilek <sedat.dilek@gmail.com>
      Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: default avatarDave Airlie <airlied@redhat.com>
      e93a9a86
    • Alan Cox's avatar
      fb: rework locking to fix lock ordering on takeover · 50e244cc
      Alan Cox authored
      Adjust the console layer to allow a take over call where the caller
      already holds the locks.  Make the fb layer lock in order.
      
      This is partly a band aid, the fb layer is terminally confused about the
      locking rules it uses for its notifiers it seems.
      
      [akpm@linux-foundation.org: remove stray non-ascii char, tidy comment]
      [akpm@linux-foundation.org: export do_take_over_console()]
      [airlied: cleanup another non-ascii char]
      Signed-off-by: default avatarAlan Cox <alan@linux.intel.com>
      Cc: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
      Cc: Stephen Rothwell <sfr@canb.auug.org.au>
      Cc: Jiri Kosina <jkosina@suse.cz>
      Cc: stable <stable@vger.kernel.org>
      Tested-by: default avatarSedat Dilek <sedat.dilek@gmail.com>
      Reviewed-by: default avatarDaniel Vetter <daniel.vetter@ffwll.ch>
      Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: default avatarDave Airlie <airlied@redhat.com>
      50e244cc
    • Borislav Petkov's avatar
      x86/intel/cacheinfo: Shut up annoying warning · 84b603ab
      Borislav Petkov authored
      I've been getting the following warning when doing randbuilds
      since forever. Now it finally pissed me off just the perfect
      amount so that I can fix it.
      
        arch/x86/kernel/cpu/intel_cacheinfo.c:489:27: warning: ‘cache_disable_0’ defined but not used [-Wunused-variable]
        arch/x86/kernel/cpu/intel_cacheinfo.c:491:27: warning: ‘cache_disable_1’ defined but not used [-Wunused-variable] arch/x86/kernel/cpu/intel_cacheinfo.c:524:27: warning: ‘subcaches’ defined but not used [-Wunused-variable]
      
      It happens because in randconfigs where CONFIG_SYSFS is not set,
      the whole sysfs-interface to L3 cache index disabling is
      remaining unused and gcc correctly warns about it. Make it
      optional, depending on CONFIG_SYSFS too, as is the case with
      other sysfs-related machinery in this file.
      Signed-off-by: default avatarBorislav Petkov <bp@suse.de>
      Cc: Andreas Herrmann <andreas.herrmann3@amd.com>
      Link: http://lkml.kernel.org/r/1359969195-27362-1-git-send-email-bp@alien8.deSigned-off-by: default avatarIngo Molnar <mingo@kernel.org>
      84b603ab
    • H. Peter Anvin's avatar
      x86, doc: Boot protocol 2.12 is in 3.8 · 521dfda9
      H. Peter Anvin authored
      The boot protocol 2.12 changes were pulled for 3.8, so update the
      documentation accordingly.
      Signed-off-by: default avatarH. Peter Anvin <hpa@linux.intel.com>
      521dfda9
    • Jan Beulich's avatar
      x86-64: Replace left over sti/cli in ia32 audit exit code · 313751fa
      Jan Beulich authored
      For some reason they didn't get replaced so far by their
      paravirt equivalents, resulting in code to be run with
      interrupts disabled that doesn't expect so (causing, in the
      observed case, a BUG_ON() to trigger) when syscall auditing is
      enabled.
      
      David (Cc-ed) came up with an identical fix, so likely this can
      be taken to count as an ack from him.
      Reported-by: default avatarPeter Moody <pmoody@google.com>
      Signed-off-by: default avatarJan Beulich <jbeulich@suse.com>
      Cc: David Vrabel <david.vrabel@citrix.com>
      Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
      Link: http://lkml.kernel.org/r/5108E01902000078000BA9C5@nat28.tlf.novell.comSigned-off-by: default avatarIngo Molnar <mingo@kernel.org>
      Cc: stable@vger.kernel.org
      Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
      Cc: David Vrabel <david.vrabel@citrix.com>
      Tested-by: default avatarPeter Moody <pmoody@google.com>
      313751fa
    • Dave Airlie's avatar
      drm/udl: disable fb_defio by default · 677d23b7
      Dave Airlie authored
      There seems to be a bad interaction between gem/shmem and defio on top,
      I get list corruption on the page lru in the shmem code.
      
      Turn it off for now until we get some more digging done.
      
      Cc: stable@vger.kernel.org
      Signed-off-by: default avatarDave Airlie <airlied@redhat.com>
      677d23b7
    • Chris Wilson's avatar
      drm/udl: Inline memcmp() for RLE compression of xfer · e90a4ea5
      Chris Wilson authored
      As we use a variable length the compiler does not realise that it is a
      fixed value of either 2 or 4 bytes. Instead of performing the inline
      comparison itself, the compiler inserts a function call to the generic
      memcmp routine which is optimised for long comparisons of variable
      length. That turns out to be quite expensive...
      Signed-off-by: default avatarChris Wilson <chris@chris-wilson.co.uk>
      Signed-off-by: default avatarDave Airlie <airlied@redhat.com>
      e90a4ea5
    • Dave Airlie's avatar
      Merge tag 'drm-intel-next-2013-02-01' of... · cd17ef41
      Dave Airlie authored
      Merge tag 'drm-intel-next-2013-02-01' of git://people.freedesktop.org/~danvet/drm-intel into drm-next
      
      Daniel writes:
      "Probably the last feature pull for 3.9, there's some fixes outstanding
      thought that I'd like to sneak in. And maybe 3.8 takes a bit longer ...
      Anyway, highlights of this pull:
      - Kill the horrible IS_DISPLAYREG hack to handle the mmio offset movements
        on vlv, big thanks to Ville.
      - Dynamic power well support for Haswell, shaves away a bit when only
        using the eDP port on pipe A (Paulo). Plus unclaimed register fixes
        uncovered by this.
      - Clarifications of the gpu hang/reset state transitions, hopefully fixing
        a few spurious -EIO deaths in userspace.
      - Haswell ELD fixes.
      - Some more (pp)gtt cleanups from Ben.
      - A few smaller things all over.
      
      Plus all the stuff from the previous rather small pull request:
      - Broadcast RBG improvements and reduced color range fixes from Ville.
      - Ben is on a "kill legacy gtt code for good" spree, first pile of patches
        included.
      - No-relocs and bo lut improvements for faster execbuf from Chris.
      - Some refactorings from Imre."
      
      * tag 'drm-intel-next-2013-02-01' of git://people.freedesktop.org/~danvet/drm-intel: (101 commits)
        GPU/i915: Fix acpi_bus_get_device() check in drivers/gpu/drm/i915/intel_opregion.c
        drm/i915: Set the SR01 "screen off" bit in i915_redisable_vga() too
        drm/i915: Kill IS_DISPLAYREG()
        drm/i915: Introduce i915_vgacntrl_reg()
        drm/i915: gen6_gmch_remove can be static
        drm/i915: dynamic Haswell display power well support
        drm/i915: check the power down well on assert_pipe()
        drm/i915: don't send DP "idle" pattern before "normal" on HSW PORT_A
        drm/i915: don't run hsw power well code on !hsw
        drm/i915: kill cargo-culted locking from power well code
        drm/i915: Only run idle processing from i915_gem_retire_requests_worker
        drm/i915: Fix CAGF for HSW
        drm/i915: Reclaim GTT space for failed PPGTT
        drm/i915: remove intel_gtt structure
        drm/i915: Add probe and remove to the gtt ops
        drm/i915: extract hw ppgtt setup/cleanup code
        drm/i915: pte_encode is gen6+
        drm/i915: vfuncs for ppgtt
        drm/i915: vfuncs for gtt_clear_range/insert_entries
        drm/i915: Error state should print /sys/kernel/debug
        ...
      cd17ef41
  3. 07 Feb, 2013 4 commits
    • Dave Airlie's avatar
      drm/udl: make usage as a console safer · bcb39af4
      Dave Airlie authored
      Okay you don't really want to use udl devices as your console, but if
      you are unlucky enough to do so, you run into a lot of schedule while atomic
      due to printk being called from all sorts of funky places. So check if we
      are in an atomic context, and queue the damage for later, the next printk
      should cause it to appear. This isn't ideal, but it is simple, and seems to
      work okay in my testing here.
      
      (dirty area idea came from xenfb)
      
      fixes a bunch of sleeping while atomic issues running fbcon on udl devices.
      
      Cc: stable@vger.kernel.org
      Signed-off-by: default avatarDave Airlie <airlied@redhat.com>
      bcb39af4
    • Dave Airlie's avatar
      drm/usb: bind driver to correct device · 9f23de52
      Dave Airlie authored
      While looking at plymouth on udl I noticed that plymouth was trying
      to use its fb plugin not its drm one, it was trying to drmOpen a driver called
      usb not udl, noticed that we actually had out driver pointing at the wrong
      device.
      
      Cc: stable@vger.kernel.org
      Signed-off-by: default avatarDave Airlie <airlied@redhat.com>
      9f23de52
    • Dave Airlie's avatar
      fbcon: don't lose the console font across generic->chip driver switch · ae128786
      Dave Airlie authored
      If grub2 loads efifb/vesafb, then when systemd starts it can set the console
      font on that framebuffer device, however when we then load the native KMS
      driver, the first thing it does is tear down the generic framebuffer driver.
      
      The thing is the generic code is doing the right thing, it frees the font
      because otherwise it would leak memory. However we can assume that if you
      are removing the generic firmware driver (vesa/efi/offb), that a new driver
      *should* be loading soon after, so we effectively leak the font.
      
      However the old code left a dangling pointer in vc->vc_font.data and we
      can now reuse that dangling pointer to load the font into the new
      driver, now that we aren't freeing it.
      
      Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=892340
      
      Cc: Kay Sievers <kay.sievers@vrfy.org>
      Cc: stable@vger.kernel.org
      Signed-off-by: default avatarDave Airlie <airlied@redhat.com>
      ae128786
    • Dave Airlie's avatar
      vgacon/vt: clear buffer attributes when we load a 512 character font (v2) · 2a248307
      Dave Airlie authored
      When we switch from 256->512 byte font rendering mode, it means the
      current contents of the screen is being reinterpreted. The bit that holds
      the high bit of the 9-bit font, may have been previously set, and thus
      the new font misrenders.
      
      The problem case we see is grub2 writes spaces with the bit set, so it
      ends up with data like 0x820, which gets reinterpreted into 0x120 char
      which the font translates into G with a circumflex. This flashes up on
      screen at boot and is quite ugly.
      
      A current side effect of this patch though is that any rendering on the
      screen changes color to a slightly darker color, but at least the screen
      no longer corrupts.
      
      v2: as suggested by hpa, always clear the attribute space, whether we
      are are going to or from 512 chars.
      
      Cc: stable@vger.kernel.org
      Signed-off-by: default avatarDave Airlie <airlied@redhat.com>
      2a248307
  4. 05 Feb, 2013 1 commit