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* Merge tag 'fbdev-3.18' of ↵Linus Torvalds2014-10-1839-124/+3421
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/tomba/linux Pull fbdev updates from Tomi Valkeinen: - new 6x10 font - various small fixes and cleanups * tag 'fbdev-3.18' of git://git.kernel.org/pub/scm/linux/kernel/git/tomba/linux: (30 commits) fonts: Add 6x10 font videomode: provide dummy inline functions for !CONFIG_OF video/atmel_lcdfb: Introduce regulator support fbdev: sh_mobile_hdmi: Re-init regs before irq re-enable on resume framebuffer: fix screen corruption when copying framebuffer: fix border color arm, fbdev, omap2, LLVMLinux: Remove nested function from omapfb arm, fbdev, omap2, LLVMLinux: Remove nested function from omap2 dss video: fbdev: valkyriefb.c: use container_of to resolve fb_info_valkyrie from fb_info video: fbdev: pxafb.c: use container_of to resolve pxafb_info/layer from fb_info video: fbdev: cyber2000fb.c: use container_of to resolve cfb_info from fb_info video: fbdev: controlfb.c: use container_of to resolve fb_info_control from fb_info video: fbdev: sa1100fb.c: use container_of to resolve sa1100fb_info from fb_info video: fbdev: stifb.c: use container_of to resolve stifb_info from fb_info video: fbdev: sis: sis_main.c: Cleaning up missing null-terminate in conjunction with strncpy video: valkyriefb: Fix unused variable warning in set_valkyrie_clock() video: fbdev: use %*ph specifier to dump small buffers video: mx3fb: always enable BACKLIGHT_LCD_SUPPORT video: fbdev: au1200fb: delete double assignment video: fbdev: sis: delete double assignment ...
| * fonts: Add 6x10 fontMaarten ter Huurne2014-10-095-1/+3103
| | | | | | | | | | | | | | | | | | | | | | | | | | This font is suitable for framebuffer consoles on devices with a 320x240 screen, to get a reasonable number of characters (53x24) that are still at a readable size. The font is derived from the existing 6x11 font, but gets 3 extra lines without sacrificing readability. Also I redesigned a some glyhps so they are more distinct and better fill the available space. Signed-off-by: Maarten ter Huurne <maarten@treewalker.org> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
| * videomode: provide dummy inline functions for !CONFIG_OFTomi Valkeinen2014-10-071-0/+16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | If CONFIG_OF is disabled but we build any driver that tries to use of_get_display_timing, we get this link error: ERROR: "of_get_display_timing" [drivers/gpu/drm/rcar-du/rcar-du-drm.ko] undefined! This adds an empty inline function as an alternative, to avoid changing each driver using this function when we want to build them without CONFIG_OF. Reported-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
| * video/atmel_lcdfb: Introduce regulator supportAlexander Stein2014-09-302-0/+23
| | | | | | | | | | | | | | | | This adds regulator support to enable/disable the LCD voltage, using 'lcd-supply' as regulator name. Signed-off-by: Alexander Stein <alexander.stein@systec-electronic.com> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
| * fbdev: sh_mobile_hdmi: Re-init regs before irq re-enable on resumeGeert Uytterhoeven2014-09-301-2/+42
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When the PM domain containing the HDMI hardware block is powered down, the HDMI register values (incl. interrupt polarity settings) are lost. During resume, after powering up the PM domain, interrupts are re-enabled, and an interrupt storm happens due to incorrect interrupt polarity settings: irq 163: nobody cared (try booting with the "irqpoll" option) ... Disabling IRQ #163 To fix this, re-initialize the interrupt polarity settings, and the htop1 register block (if present), during resume. As the .suspend_noirq() and .resume_noirq() callbacks are not called when using the generic PM domain, the normal .resume() callback is used, and the device interrupt needs to be disabled/enabled manually. This fixes resume from s2ram with power down of the A4MP PM domain on r8a7740/Armadillo. Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
| * framebuffer: fix screen corruption when copyingMikulas Patocka2014-09-301-5/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The function bitcpy_rev has a bug that may result in screen corruption. The bug happens under these conditions: * the end of the destination area of a copy operation is aligned on a long word boundary * the end of the source area is not aligned on a long word boundary * we are copying more than one long word In this case, the variable shift is non-zero and the variable first is zero. The statements FB_WRITEL(comp(d0, FB_READL(dst), first), dst) reads the last long word of the destination and writes it back unchanged (because first is zero). Correctly, we should write the variable d0 to the last word of the destination in this case. This patch fixes the bug by introducing and extra test if first is zero. The patch also removes the references to fb_memmove in the code that is commented out because fb_memmove was removed from framebuffer subsystem. Signed-off-by: Mikulas Patocka <mpatocka@redhat.com> Cc: stable@vger.kernel.org Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
| * framebuffer: fix border colorMikulas Patocka2014-09-304-8/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The framebuffer code uses the current background color to fill the border when switching consoles, however, this results in inconsistent behavior. For example: - start Midnigh Commander - the border is black - switch to another console and switch back - the border is cyan - type something into the command line in mc - the border is cyan - switch to another console and switch back - the border is black - press F9 to go to menu - the border is black - switch to another console and switch back - the border is dark blue When switching to a console with Midnight Commander, the border is random color that was left selected by the slang subsystem. This patch fixes this inconsistency by always using black as the background color when switching consoles. Signed-off-by: Mikulas Patocka <mpatocka@redhat.com> Cc: stable@vger.kernel.org Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
| * arm, fbdev, omap2, LLVMLinux: Remove nested function from omapfbBehan Webster2014-09-301-7/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Replace the use of nested functions where a normal function will suffice. Nested functions are not liked by upstream kernel developers in general. Their use breaks the use of clang as a compiler, and doesn't make the code any better. This code now works for both gcc and clang. Signed-off-by: Behan Webster <behanw@converseincode.com> Suggested-by: Arnd Bergmann <arnd@arndb.de> Cc: Arnd Bergmann <arnd@arndb.de> Reviewed-by: Felipe Balbi <balbi@ti.com> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
| * arm, fbdev, omap2, LLVMLinux: Remove nested function from omap2 dssBehan Webster2014-09-302-11/+14
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Replace the use of nested functions where a normal function will suffice. Nested functions are not liked by upstream kernel developers in general. Their use breaks the use of clang as a compiler, and doesn't make the code any better. This code now works for both gcc and clang. Signed-off-by: Behan Webster <behanw@converseincode.com> Suggested-by: Arnd Bergmann <arnd@arndb.de> Cc: Arnd Bergmann <arnd@arndb.de> Reviewed-by: Felipe Balbi <balbi@ti.com> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
| * video: fbdev: valkyriefb.c: use container_of to resolve fb_info_valkyrie ↵Fabian Frederick2014-09-301-4/+8
| | | | | | | | | | | | | | | | | | from fb_info Use container_of instead of casting first structure member. Signed-off-by: Fabian Frederick <fabf@skynet.be> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
| * video: fbdev: pxafb.c: use container_of to resolve pxafb_info/layer from fb_infoFabian Frederick2014-09-301-10/+10
| | | | | | | | | | | | | | Use container_of instead of casting first structure member. Signed-off-by: Fabian Frederick <fabf@skynet.be> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
| * video: fbdev: cyber2000fb.c: use container_of to resolve cfb_info from fb_infoFabian Frederick2014-09-301-8/+8
| | | | | | | | | | | | | | Use container_of instead of casting first structure member. Signed-off-by: Fabian Frederick <fabf@skynet.be> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
| * video: fbdev: controlfb.c: use container_of to resolve fb_info_control from ↵Fabian Frederick2014-09-301-5/+10
| | | | | | | | | | | | | | | | | | fb_info Use container_of instead of casting first structure member. Signed-off-by: Fabian Frederick <fabf@skynet.be> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
| * video: fbdev: sa1100fb.c: use container_of to resolve sa1100fb_info from fb_infoFabian Frederick2014-09-301-6/+12
| | | | | | | | | | | | | | Use container_of instead of casting first structure member. Signed-off-by: Fabian Frederick <fabf@skynet.be> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
| * video: fbdev: stifb.c: use container_of to resolve stifb_info from fb_infoFabian Frederick2014-09-301-2/+2
| | | | | | | | | | | | | | Use container_of instead of casting first structure member. Signed-off-by: Fabian Frederick <fabf@skynet.be> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
| * video: fbdev: sis: sis_main.c: Cleaning up missing null-terminate in ↵Rickard Strandqvist2014-09-301-1/+1
| | | | | | | | | | | | | | | | | | conjunction with strncpy Replacing strncpy with strlcpy to avoid strings that lacks null terminate. Signed-off-by: Rickard Strandqvist <rickard_strandqvist@spectrumdigital.se> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
| * video: valkyriefb: Fix unused variable warning in set_valkyrie_clock()Geert Uytterhoeven2014-09-301-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | If CONFIG_ADB_CUDA=n: drivers/video/fbdev/valkyriefb.c: In function ‘set_valkyrie_clock’: drivers/video/fbdev/valkyriefb.c:267: warning: unused variable ‘i’ drivers/video/fbdev/valkyriefb.c:266: warning: unused variable ‘req’ Move the variable declarations inside the existing #ifdef section to fix this. Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
| * video: fbdev: use %*ph specifier to dump small buffersAndy Shevchenko2014-09-092-15/+4
| | | | | | | | | | | | | | | | Instead of dereference each byte let's use %*ph specifier in the printk() calls. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
| * video: mx3fb: always enable BACKLIGHT_LCD_SUPPORTArnd Bergmann2014-09-091-1/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Commit 7edaa761ee81b ("video: mx3fb: Add backlight control support") changed the mx3fb driver so it always selects the BACKLIGHT_CLASS_DEVICE symbol, but that is hidden behind BACKLIGHT_LCD_SUPPORT in Kconfig, so we get a Kconfig warning for multi_v5_defconfig, which doesn't have that: Warning: (DRM_RADEON && DRM_NOUVEAU && DRM_I915 && DRM_GMA500 && DRM_SHMOBILE && DRM_TILCDC && FB_BACKLIGHT && FB_MX3 && USB_APPLEDISPLAY && FB_OLPC_DCON && ASUS_LAPTOP && SONY_LAPTOP && THINKPAD_ACPI && EEEPC_LAPTOP && ACPI_CMPC && SAMSUNG_Q10) selects BACKLIGHT_CLASS_DEVICE which has unmet direct dependencies (HAS_IOMEM && BACKLIGHT_LCD_SUPPORT) This makes sure we always enable both symbols together for mx3fb, like we do for the other drivers that can't be built without backlight support. Note that a better solution would be to ensure the driver can work with or without backlight support. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Cc: Alexander Stein <alexander.stein@systec-electronic.com> Cc: Tomi Valkeinen <tomi.valkeinen@ti.com> Cc: linux-fbdev@vger.kernel.org Cc: Jean-Christophe Plagniol-Villard <plagnioj@jcrosoft.com> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
| * video: fbdev: au1200fb: delete double assignmentJulia Lawall2014-08-261-1/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Delete successive assignments to the same location. A simplified version of the semantic match that finds this problem is as follows: (http://coccinelle.lip6.fr/) // <smpl> @@ expression i; @@ *i = ...; i = ...; // </smpl> Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
| * video: fbdev: sis: delete double assignmentJulia Lawall2014-08-261-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Delete successive assignments to the same location. The second assignment is changed to update a different field, as done in other nearby code. A simplified version of the semantic match that finds this problem is as follows: (http://coccinelle.lip6.fr/) // <smpl> @@ expression i; @@ *i = ...; i = ...; // </smpl> Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
| * video: fbdev: intelfb: delete double assignmentJulia Lawall2014-08-261-2/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Delete successive assignments to the same location. In the second case, = is converted to |=, which looks appropriate based on the values involved. A simplified version of the semantic match that finds this problem is as follows: (http://coccinelle.lip6.fr/) // <smpl> @@ expression i; @@ *i = ...; i = ...; // </smpl> Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
| * video: fbdev: riva: delete double assignmentJulia Lawall2014-08-261-1/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Delete successive assignments to the same location. A simplified version of the semantic match that finds this problem is as follows: (http://coccinelle.lip6.fr/) // <smpl> @@ expression i; @@ *i = ...; i = ...; // </smpl> Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
| * msm: msm_fb: Move to using managed resources of kzallocPramod Gurav2014-08-261-2/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Move to managed verion of kzalloc. Also checks return for failure case which was missing. Signed-off-by: Pramod Gurav <pramod.gurav@smartplayin.com> CC: Jean-Christophe Plagniol-Villard <plagnioj@jcrosoft.com> CC: Tomi Valkeinen <tomi.valkeinen@ti.com> CC: Stephen Boyd <sboyd@codeaurora.org> CC: Jingoo Han <jg1.han@samsung.com> CC: Rob Clark <robdclark@gmail.com> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
| * msm: msm_fb: Add remove function for platform driver for clean unloadingPramod Gurav2014-08-261-0/+16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | This adds a remove function to platform driver structure so that resources are released when driver is unloaded. Signed-off-by: Pramod Gurav <pramod.gurav@smartplayin.com> CC: Jean-Christophe Plagniol-Villard <plagnioj@jcrosoft.com> CC: Tomi Valkeinen <tomi.valkeinen@ti.com> CC: Stephen Boyd <sboyd@codeaurora.org> CC: Jingoo Han <jg1.han@samsung.com> CC: Rob Clark <robdclark@gmail.com> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
| * video: mx3fb: Update comment for dmaengine_prep_slave_sg() APIGeert Uytterhoeven2014-08-261-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Commit 16052827d98fbc13c31ebad560af4bd53e2b4dd5 ("dmaengine/dma_slave: introduce inline wrappers") changed the code to use the new API, but forgot to update a comment. Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Cc: Jean-Christophe Plagniol-Villard <plagnioj@jcrosoft.com> Cc: Tomi Valkeinen <tomi.valkeinen@ti.com> Cc: Jiri Kosina <trivial@kernel.org> Cc: linux-fbdev@vger.kernel.org -- v2: - New Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
| * video: vermilion: remove unnecessary break after gotoFabian Frederick2014-08-261-1/+0
| | | | | | | | | | | | | | | | | | Cc: Jean-Christophe Plagniol-Villard <plagnioj@jcrosoft.com> Cc: Tomi Valkeinen <tomi.valkeinen@ti.com> Cc: Jingoo Han <jg1.han@samsung.com> Cc: linux-fbdev@vger.kernel.org Signed-off-by: Fabian Frederick <fabf@skynet.be> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
| * video: fbdev: aty: use c99 initializers in structuresJulia Lawall2014-08-261-8/+55
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Use c99 initializers for structures. A simplified version of the semantic match that finds this problem is as follows: (http://coccinelle.lip6.fr/) // <smpl> @decl@ identifier i1,fld; type T; field list[n] fs; @@ struct i1 { fs T fld; ...}; @bad@ identifier decl.i1,i2; expression e; initializer list[decl.n] is; @@ struct i1 i2 = { is, + .fld = e - e ,...}; // </smpl> Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr> Reviewed-by: Josh Triplett <josh@joshtriplett.org> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
| * OMAPDSS: DSI: use c99 initializers in structuresJulia Lawall2014-08-261-2/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Use c99 initializers for structures. A simplified version of the semantic match that finds this problem is as follows: (http://coccinelle.lip6.fr/) // <smpl> @decl@ identifier i1,fld; type T; field list[n] fs; @@ struct i1 { fs T fld; ...}; @bad@ identifier decl.i1,i2; expression e; initializer list[decl.n] is; @@ struct i1 i2 = { is, + .fld = e - e ,...}; // </smpl> Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
| * video: fbdev: matrox: use c99 initializers in structuresJulia Lawall2014-08-262-16/+56
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Use c99 initializers for structures. A simplified version of the semantic match that finds this problem is as follows: (http://coccinelle.lip6.fr/) // <smpl> @decl@ identifier i1,fld; type T; field list[n] fs; @@ struct i1 { fs T fld; ...}; @bad@ identifier decl.i1,i2; expression e; initializer list[decl.n] is; @@ struct i1 i2 = { is, + .fld = e - e ,...}; // </smpl> Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
| * video: of: display_timing: delete unneeded test before of_node_putJulia Lawall2014-08-261-2/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Of_node_put supports NULL as its argument, so the initial test is not necessary. Furthermore, native_mode cannot be NULL at this point. Suggested by Uwe Kleine-König. The semantic patch that fixes this problem is as follows: (http://coccinelle.lip6.fr/) // <smpl> @@ expression e; @@ -if (e) of_node_put(e); // </smpl> Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
* | Merge tag 'kvm-arm-for-3.18-take-2' of ↵Linus Torvalds2014-10-1811-86/+392
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm Pull second batch of changes for KVM/{arm,arm64} from Marc Zyngier: "The most obvious thing is the sizeable MMU changes to support 48bit VAs on arm64. Summary: - support for 48bit IPA and VA (EL2) - a number of fixes for devices mapped into guests - yet another VGIC fix for BE - a fix for CPU hotplug - a few compile fixes (disabled VGIC, strict mm checks)" [ I'm pulling directly from Marc at the request of Paolo Bonzini, whose backpack was stolen at Düsseldorf airport and will do new keys and rebuild his web of trust. - Linus ] * tag 'kvm-arm-for-3.18-take-2' of git://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm: arm/arm64: KVM: Fix BE accesses to GICv2 EISR and ELRSR regs arm: kvm: STRICT_MM_TYPECHECKS fix for user_mem_abort arm/arm64: KVM: Ensure memslots are within KVM_PHYS_SIZE arm64: KVM: Implement 48 VA support for KVM EL2 and Stage-2 arm/arm64: KVM: map MMIO regions at creation time arm64: kvm: define PAGE_S2_DEVICE as read-only by default ARM: kvm: define PAGE_S2_DEVICE as read-only by default arm/arm64: KVM: add 'writable' parameter to kvm_phys_addr_ioremap arm/arm64: KVM: fix potential NULL dereference in user_mem_abort() arm/arm64: KVM: use __GFP_ZERO not memset() to get zeroed pages ARM: KVM: fix vgic-disabled build arm: kvm: fix CPU hotplug
| * | arm/arm64: KVM: Fix BE accesses to GICv2 EISR and ELRSR regsChristoffer Dall2014-10-165-29/+36
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The EIRSR and ELRSR registers are 32-bit registers on GICv2, and we store these as an array of two such registers on the vgic vcpu struct. However, we access them as a single 64-bit value or as a bitmap pointer in the generic vgic code, which breaks BE support. Instead, store them as u64 values on the vgic structure and do the word-swapping in the assembly code, which already handles the byte order for BE systems. Tested-by: Victor Kamensky <victor.kamensky@linaro.org> Acked-by: Marc Zyngier <marc.zyngier@arm.com> Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
| * | arm: kvm: STRICT_MM_TYPECHECKS fix for user_mem_abortSteve Capper2014-10-151-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Commit: b886576 ARM: KVM: user_mem_abort: support stage 2 MMIO page mapping introduced some code in user_mem_abort that failed to compile if STRICT_MM_TYPECHECKS was enabled. This patch fixes up the failing comparison. Signed-off-by: Steve Capper <steve.capper@linaro.org> Reviewed-by: Kim Phillips <kim.phillips@linaro.org> Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
| * | arm/arm64: KVM: Ensure memslots are within KVM_PHYS_SIZEChristoffer Dall2014-10-141-0/+11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When creating or moving a memslot, make sure the IPA space is within the addressable range of the guest. Otherwise, user space can create too large a memslot and KVM would try to access potentially unallocated page table entries when inserting entries in the Stage-2 page tables. Acked-by: Catalin Marinas <catalin.marinas@arm.com> Acked-by: Marc Zyngier <marc.zyngier@arm.com> Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
| * | arm64: KVM: Implement 48 VA support for KVM EL2 and Stage-2Christoffer Dall2014-10-144-40/+249
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch adds the necessary support for all host kernel PGSIZE and VA_SPACE configuration options for both EL2 and the Stage-2 page tables. However, for 40bit and 42bit PARange systems, the architecture mandates that VTCR_EL2.SL0 is maximum 1, resulting in fewer levels of stage-2 pagge tables than levels of host kernel page tables. At the same time, systems with a PARange > 42bit, we limit the IPA range by always setting VTCR_EL2.T0SZ to 24. To solve the situation with different levels of page tables for Stage-2 translation than the host kernel page tables, we allocate a dummy PGD with pointers to our actual inital level Stage-2 page table, in order for us to reuse the kernel pgtable manipulation primitives. Reproducing all these in KVM does not look pretty and unnecessarily complicates the 32-bit side. Systems with a PARange < 40bits are not yet supported. [ I have reworked this patch from its original form submitted by Jungseok to take the architecture constraints into consideration. There were too many changes from the original patch for me to preserve the authorship. Thanks to Catalin Marinas for his help in figuring out a good solution to this challenge. I have also fixed various bugs and missing error code handling from the original patch. - Christoffer ] Reviewed-by: Catalin Marinas <catalin.marinas@arm.com> Acked-by: Marc Zyngier <marc.zyngier@arm.com> Signed-off-by: Jungseok Lee <jungseoklee85@gmail.com> Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
| * | arm/arm64: KVM: map MMIO regions at creation timeArd Biesheuvel2014-10-131-8/+69
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | There is really no point in faulting in memory regions page by page if they are not backed by demand paged system RAM but by a linear passthrough mapping of a host MMIO region. So instead, detect such regions at setup time and install the mappings for the backing all at once. Acked-by: Marc Zyngier <marc.zyngier@arm.com> Reviewed-by: Christoffer Dall <christoffer.dall@linaro.org> Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
| * | arm64: kvm: define PAGE_S2_DEVICE as read-only by defaultArd Biesheuvel2014-10-101-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Now that we support read-only memslots, we need to make sure that pass-through device mappings are not mapped writable if the guest has requested them to be read-only. The existing implementation already honours this by calling kvm_set_s2pte_writable() on the new pte in case of writable mappings, so all we need to do is define the default pgprot_t value used for devices to be PTE_S2_RDONLY. Acked-by: Marc Zyngier <marc.zyngier@arm.com> Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
| * | ARM: kvm: define PAGE_S2_DEVICE as read-only by defaultArd Biesheuvel2014-10-101-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Now that we support read-only memslots, we need to make sure that pass-through device mappings are not mapped writable if the guest has requested them to be read-only. The existing implementation already honours this by calling kvm_set_s2pte_writable() on the new pte in case of writable mappings, so all we need to do is define the default pgprot_t value used for devices to be PTE_S2_RDONLY. Acked-by: Marc Zyngier <marc.zyngier@arm.com> Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
| * | arm/arm64: KVM: add 'writable' parameter to kvm_phys_addr_ioremapArd Biesheuvel2014-10-104-4/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add support for read-only MMIO passthrough mappings by adding a 'writable' parameter to kvm_phys_addr_ioremap. For the moment, mappings will be read-write even if 'writable' is false, but once the definition of PAGE_S2_DEVICE gets changed, those mappings will be created read-only. Acked-by: Marc Zyngier <marc.zyngier@arm.com> Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
| * | arm/arm64: KVM: fix potential NULL dereference in user_mem_abort()Ard Biesheuvel2014-10-101-0/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | Handle the potential NULL return value of find_vma_intersection() before dereferencing it. Acked-by: Marc Zyngier <marc.zyngier@arm.com> Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
| * | arm/arm64: KVM: use __GFP_ZERO not memset() to get zeroed pagesArd Biesheuvel2014-10-101-2/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | Pass __GFP_ZERO to __get_free_pages() instead of calling memset() explicitly. Acked-by: Marc Zyngier <marc.zyngier@arm.com> Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
| * | ARM: KVM: fix vgic-disabled buildArnd Bergmann2014-10-071-0/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The vgic code can be disabled in Kconfig and there are dummy implementations of most of the provided API functions for the disabled case. However, the newly introduced kvm_vgic_destroy/kvm_vgic_vcpu_destroy functions are lacking those dummies, resulting in this build error: arch/arm/kvm/arm.c: In function 'kvm_arch_destroy_vm': arch/arm/kvm/arm.c:165:2: error: implicit declaration of function 'kvm_vgic_destroy' [-Werror=implicit-function-declaration] kvm_vgic_destroy(kvm); ^ arch/arm/kvm/arm.c: In function 'kvm_arch_vcpu_free': arch/arm/kvm/arm.c:248:2: error: implicit declaration of function 'kvm_vgic_vcpu_destroy' [-Werror=implicit-function-declaration] kvm_vgic_vcpu_destroy(vcpu); ^ This adds two inline helpers to get it to build again in this configuration. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Fixes: c1bfb577add ("arm/arm64: KVM: vgic: switch to dynamic allocation") Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
| * | arm: kvm: fix CPU hotplugVladimir Murzin2014-09-291-1/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | On some platforms with no power management capabilities, the hotplug implementation is allowed to return from a smp_ops.cpu_die() call as a function return. Upon a CPU onlining event, the KVM CPU notifier tries to reinstall the hyp stub, which fails on platform where no reset took place following a hotplug event, with the message: CPU1: smp_ops.cpu_die() returned, trying to resuscitate CPU1: Booted secondary processor Kernel panic - not syncing: unexpected prefetch abort in Hyp mode at: 0x80409540 unexpected data abort in Hyp mode at: 0x80401fe8 unexpected HVC/SVC trap in Hyp mode at: 0x805c6170 since KVM code is trying to reinstall the stub on a system where it is already configured. To prevent this issue, this patch adds a check in the KVM hotplug notifier that detects if the HYP stub really needs re-installing when a CPU is onlined and skips the installation call if the stub is already in place, which means that the CPU has not been reset. Signed-off-by: Vladimir Murzin <vladimir.murzin@arm.com> Acked-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Acked-by: Marc Zyngier <marc.zyngier@arm.com> Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
* | | Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linusLinus Torvalds2014-10-1857-138/+274
|\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull MIPS updates from Ralf Baechle: "This is the MIPS pull request for the next kernel: - Zubair's patch series adds CMA support for MIPS. Doing so it also touches ARM64 and x86. - remove the last instance of IRQF_DISABLED from arch/mips - updates to two of the MIPS defconfig files. - cleanup of how cache coherency bits are handled on MIPS and implement support for write-combining. - platform upgrades for Alchemy - move MIPS DTS files to arch/mips/boot/dts/" * 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus: (24 commits) MIPS: ralink: remove deprecated IRQF_DISABLED MIPS: pgtable.h: Implement the pgprot_writecombine function for MIPS MIPS: cpu-probe: Set the write-combine CCA value on per core basis MIPS: pgtable-bits: Define the CCA bit for WC writes on Ingenic cores MIPS: pgtable-bits: Move the CCA bits out of the core's ifdef blocks MIPS: DMA: Add cma support x86: use generic dma-contiguous.h arm64: use generic dma-contiguous.h asm-generic: Add dma-contiguous.h MIPS: BPF: Add new emit_long_instr macro MIPS: ralink: Move device-trees to arch/mips/boot/dts/ MIPS: Netlogic: Move device-trees to arch/mips/boot/dts/ MIPS: sead3: Move device-trees to arch/mips/boot/dts/ MIPS: Lantiq: Move device-trees to arch/mips/boot/dts/ MIPS: Octeon: Move device-trees to arch/mips/boot/dts/ MIPS: Add support for building device-tree binaries MIPS: Create common infrastructure for building built-in device-trees MIPS: SEAD3: Enable DEVTMPFS MIPS: SEAD3: Regenerate defconfigs MIPS: Alchemy: DB1300: Add touch penirq support ...
| * | | MIPS: ralink: remove deprecated IRQF_DISABLEDMichael Opdenacker2014-09-291-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Remove the use of the IRQF_DISABLED flag from arch/mips/ralink/timer.c It's a NOOP since 2.6.35 and it will be removed soon. Signed-off-by: Michael Opdenacker <michael.opdenacker@free-electrons.com> Cc: akpm@linux-foundation.org Cc: jkosina@suse.cz Cc: standby24x7@gmail.com Cc: rdunlap@infradead.org Cc: yongjun_wei@trendmicro.com.cn Cc: linux-mips@linux-mips.org Cc: linux-kernel@vger.kernel.org Patchwork: https://patchwork.linux-mips.org/patch/7886/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
| * | | MIPS: pgtable.h: Implement the pgprot_writecombine function for MIPSMarkos Chandras2014-09-221-0/+10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Previously, the pgprot_writecombine function was simply defined as pgprot_uncached in include/asm-generic/pgtable.h. This is not optimal for cores that can actually do write-combine memory writes so define this function to take into account the core's cache coherency attribute to achieve such behavior. Signed-off-by: Markos Chandras <markos.chandras@imgtec.com> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/7403/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
| * | | MIPS: cpu-probe: Set the write-combine CCA value on per core basisMarkos Chandras2014-09-222-0/+26
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Different cores use different CCA values to achieve write-combine memory writes. For cores that do not support write-combine we set the default value to CCA:2 (uncached, non-coherent) which is the default value as set by the kernel. Signed-off-by: Markos Chandras <markos.chandras@imgtec.com> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/7402/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
| * | | MIPS: pgtable-bits: Define the CCA bit for WC writes on Ingenic coresMarkos Chandras2014-09-221-0/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Ingenic uses the CCA:1 bit to achieve write-combine memory writes. Signed-off-by: Markos Chandras <markos.chandras@imgtec.com> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/7401/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
| * | | MIPS: pgtable-bits: Move the CCA bits out of the core's ifdef blocksMarkos Chandras2014-09-221-16/+25
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Define all the CCA bits outside the ifdef blocks for specific cores but also allow cores to override them if necessary. Signed-off-by: Markos Chandras <markos.chandras@imgtec.com> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/7400/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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