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2015-03-10of: unittest: Add options string testcase variantsPeter Hurley
Add testcase variants with '/' in the options string to test for scan beyond end path name terminated by ':'. Signed-off-by: Peter Hurley <peter@hurleysoftware.com> Signed-off-by: Rob Herring <robh@kernel.org>
2015-03-10of: fix handling of '/' in options for of_find_node_by_path()Leif Lindholm
Ensure proper handling of paths with appended options (after ':'), where those options may contain a '/'. Fixes: 7914a7c5651a ("of: support passing console options with stdout-path") Reported-by: Peter Hurley <peter@hurleysoftware.com> Signed-off-by: Leif Lindholm <leif.lindholm@linaro.org> Cc: <stable@vger.kernel.org> # 3.19 Signed-off-by: Rob Herring <robh@kernel.org>
2015-03-10of/unittest: Fix the wrong expected value in of_selftest_property_stringWang Long
This patch fix the wrong expected value of of_property_match_string in of_selftest_property_string. Signed-off-by: Wang Long <long.wanglong@huawei.com> Signed-off-by: Rob Herring <robh@kernel.org>
2015-03-10of/unittest: remove the duplicate of_changeset_initWang Long
Remove the duplicate of_changeset_init. In of_selftest_changeset testcase, the "struct of_changeset chgset" is initialized twice, but only once is enough. so, drop the first initializtion code. Signed-off-by: Wang Long <long.wanglong@huawei.com> Signed-off-by: Rob Herring <robh@kernel.org>
2015-03-10dt: submitting-patches: clarify that DT maintainers are to be cced on bindingsMatt Porter
The exact steps provided for submitting binding patches can be read as requiring the bindings to be sent only to the devicetree@vger.kernel.org list. Since the DT maintainers would like to be Cced on any binding submissions, make this requirement explicit in step 2. Signed-off-by: Matt Porter <mporter@konsulko.com> Signed-off-by: Rob Herring <robh@kernel.org>
2015-03-10of: unittest: fix I2C dependencyArnd Bergmann
The unittest fails to link if I2C or I2C_MUX is a loadable module: drivers/built-in.o: In function `selftest_i2c_mux_remove': unittest.c:(.text+0xb0ce4): undefined reference to `i2c_del_mux_adapter' This changes the newly added IS_ENABLED() checks to use IS_BUILTIN() instead, which evaluates to false if the other driver is a module. Reported-by: Chen Gang <gang.chen.5i5j@gmail.com> Signed-off-by: Arnd Bergmann <arnd@arndb.de> Fixes: d5e75500ca401 ("of: unitest: Add I2C overlay unit tests.") Signed-off-by: Rob Herring <robh@kernel.org>
2015-03-10of/overlay: Remove unused variableFabio Estevam
Commit 3e7f7626fd49a ("of/overlay: Do not generate duplicate nodes") removed the only use of the 'grandchild' variable, which leads to the following build warning: drivers/of/overlay.c: In function 'of_overlay_apply_single_device_node': drivers/of/overlay.c:89:31: warning: unused variable 'grandchild' [-Wunused-variable] struct device_node *tchild, *grandchild; ^ Remove this unused variable. Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com> Signed-off-by: Rob Herring <robh@kernel.org>
2015-03-10Documentation: DT: Renamed of-serial.txt to 8250.txtChunyan Zhang
The file of-serial.txt was only for 8250 compatible UART implementations, so renamed it to 8250.txt to avoid confusing other persons. This is suggested by Arnd, see: http://lists.infradead.org/pipermail/linux-arm-kernel/2014-September/291455.html Signed-off-by: Chunyan Zhang <chunyan.zhang@spreadtrum.com> Acked-by: Mark Rutland <mark.rutland@arm.com> Signed-off-by: Rob Herring <robh@kernel.org>
2015-03-10of: Fix premature bootconsole disable with 'stdout-path'Peter Hurley
Support for devicetree serial consoles via 'stdout-path' causes bootconsoles to be disabled when the vt dummy console loads, since there is no preferred console (the preferred console is not added until the device is probed). Ensure there is at least a preferred console, even if never matched. Requires: "console: Fix console name size mismatch" Cc: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Peter Hurley <peter@hurleysoftware.com> Signed-off-by: Rob Herring <robh@kernel.org>
2015-03-10ALSA: firewire-lib: leave unit reference counting completelyTakashi Sakamoto
With previous commit, this module managed to leave the counting to each drivers, but the isochronous resources functionality still increment/decrement the count. This commit purge such codes to leave the responsibility to each drivers. Fix: c6f224dc20ad ('ALSA: firewire-lib: remove reference counting') Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-03-10Revert "ALSA: dice: fix wrong offsets for Dice interface"Takashi Sakamoto
This reverts commit 8cdebf71098c07168ef6335e2f1f35d85dbe3049. The reverted commit breaks out-stream functionality of Dice driver. Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-03-10Merge tag 'v4.0-rc3' into HEADRob Herring
Linux 4.0-rc3 Merging in v4.0-rc3 because commit 30a22c215a00 (console: Fix console name size mismatch) is a dependency.
2015-03-10KVM: Use pr_info/pr_err in kvm_main.cXiubo Li
WARNING: Prefer [subsystem eg: netdev]_info([subsystem]dev, ... then dev_info(dev, ... then pr_info(... to printk(KERN_INFO ... + printk(KERN_INFO "kvm: exiting hardware virtualization\n"); WARNING: Prefer [subsystem eg: netdev]_err([subsystem]dev, ... then dev_err(dev, ... then pr_err(... to printk(KERN_ERR ... + printk(KERN_ERR "kvm: misc device register failed\n"); Signed-off-by: Xiubo Li <lixiubo@cmss.chinamobile.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2015-03-10KVM: Fix indentation in kvm_main.cXiubo Li
ERROR: code indent should use tabs where possible + const struct kvm_io_range *r2)$ WARNING: please, no spaces at the start of a line + const struct kvm_io_range *r2)$ This patch fixes this ERROR & WARNING to reduce noise when checking new patches in kvm_main.c. Signed-off-by: Xiubo Li <lixiubo@cmss.chinamobile.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2015-03-10KVM: no space before tabs in kvm_main.cXiubo Li
WARNING: please, no space before tabs + * ^I^Ikvm->lock --> kvm->slots_lock --> kvm->irq_lock$ WARNING: please, no space before tabs +^I^I * ^I- gfn_to_hva (kvm_read_guest, gfn_to_pfn)$ WARNING: please, no space before tabs +^I^I * ^I- kvm_is_visible_gfn (mmu_check_roots)$ This patch fixes these warnings to reduce noise when checking new patches in kvm_main.c. Signed-off-by: Xiubo Li <lixiubo@cmss.chinamobile.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2015-03-10KVM: Missing blank line after declarations in kvm_main.cXiubo Li
There are many Warnings like this: WARNING: Missing a blank line after declarations + struct kvm_coalesced_mmio_zone zone; + r = -EFAULT; This patch fixes these warnings to reduce noise when checking new patches in kvm_main.c. Signed-off-by: Xiubo Li <lixiubo@cmss.chinamobile.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2015-03-10KVM: EXPORT_SYMBOL should immediately follow its functionXiubo Li
WARNING: EXPORT_SYMBOL(foo); should immediately follow its function/variable +EXPORT_SYMBOL_GPL(gfn_to_page); This patch fixes these warnings to reduce noise when checking new patches in kvm_main.c. Signed-off-by: Xiubo Li <lixiubo@cmss.chinamobile.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2015-03-10KVM: Fix ERROR: do not initialise statics to 0 or NULL in kvm_main.cXiubo Li
ERROR: do not initialise statics to 0 or NULL +static int kvm_usage_count = 0; The kvm_usage_count will be placed to .bss segment when linking, so not need to set it to 0 here obviously. This patch fixes this ERROR to reduce noise when checking new patches in kvm_main.c. Signed-off-by: Xiubo Li <lixiubo@cmss.chinamobile.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2015-03-10KVM: Fix WARNING: labels should not be indented in kvm_main.cXiubo Li
WARNING: labels should not be indented + out_free_irq_routing: This patch fixes this WARNING to reduce noise when checking new patches in kvm_main.c. Signed-off-by: Xiubo Li <lixiubo@cmss.chinamobile.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2015-03-10KVM: Fix WARNINGs for 'sizeof(X)' instead of 'sizeof X' in kvm_main.cXiubo Li
There are many WARNINGs like this: WARNING: sizeof tr should be sizeof(tr) + if (copy_from_user(&tr, argp, sizeof tr)) In kvm_main.c many places are using 'sizeof(X)', and the other places are using 'sizeof X', while the kernel recommands to use 'sizeof(X)', so this patch will replace all 'sizeof X' to 'sizeof(X)' to make them consistent and at the same time to reduce the WARNINGs noise when we are checking new patches. Signed-off-by: Xiubo Li <lixiubo@cmss.chinamobile.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2015-03-10KVM: Get rid of kvm_kvfree()Thomas Huth
kvm_kvfree() provides exactly the same functionality as the new common kvfree() function - so let's simply replace the kvm function with the common function. Signed-off-by: Thomas Huth <thuth@linux.vnet.ibm.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2015-03-10KVM: make halt_poll_ns staticChristian Borntraeger
halt_poll_ns is used only locally. Make it static. Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2015-03-10KVM: ioapic: Record edge-triggered interrupts delivery statusWincy Van
This patch fixes the bug discussed in https://www.mail-archive.com/kvm@vger.kernel.org/msg109813.html This patch uses a new field named irr_delivered to record the delivery status of edge-triggered interrupts, and clears the delivered interrupts in kvm_get_ioapic. So it has the same effect of commit 0bc830b05c667218d703f2026ec866c49df974fc ("KVM: ioapic: clear IRR for edge-triggered interrupts at delivery") while avoids the bug of Windows guests. Signed-off-by: Wincy Van <fanwenyi0529@gmail.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2015-03-10KVM: fix checkpatch.pl errors in kvm/irqchip.cKevin Mulvey
Fix whitespace around while Signed-off-by: Kevin Mulvey <kmulvey@linux.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2015-03-10KVM: white space formatting in kvm_main.cKevin Mulvey
Better alignment of loop using tabs rather than spaces, this makes checkpatch.pl happier. Signed-off-by: Kevin Mulvey <kmulvey@linux.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2015-03-10KVM: SVM: use kvm_register_write()/read()David Kaplan
KVM has nice wrappers to access the register values, clean up a few places that should use them but currently do not. Signed-off-by: David Kaplan <david.kaplan@amd.com> [forward port and testing] Signed-off-by: Joel Schopp <joel.schopp@amd.com> Acked-by: Borislav Petkov <bp@suse.de> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2015-03-10drm/i915: Prevent TLB error on first execution on SNBChris Wilson
Long ago I found that I was getting sporadic errors when booting SNB, with the symptom being that the first batch died with IPEHR != *ACTHD, typically caused by the TLB being invalid. These magically disappeared if I held the forcewake during the entire ring initialisation sequence. (It can probably be shortened to a short critical section, but the whole initialisation is full of register writes and so we would be taking and releasing forcewake almost continually, and so holding it over the entire sequence will probably be a net win!) Note some of the kernels I encounted the issue already had the deferred forcewake release, so it is still relevant. I know that there have been a few other reports with similar failure conditions on SNB, I think such as References: https://bugs.freedesktop.org/show_bug.cgi?id=80913 v2: Wrap i915_gem_init_hw() with its own security blanket as we take that path following resume and reset. Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch> Cc: stable@vger.kernel.org Signed-off-by: Jani Nikula <jani.nikula@intel.com>
2015-03-10x86/asm/entry/64: Save user RSP in pt_regs->sp on SYSCALL64 fastpathDenys Vlasenko
Prepare for the removal of 'usersp', by simplifying PER_CPU(old_rsp) usage: - use it only as temp storage - store the userspace stack pointer immediately in pt_regs->sp on syscall entry, instead of using it later, on syscall exit. - change C code to use pt_regs->sp only, instead of PER_CPU(old_rsp) and task->thread.usersp. FIXUP/RESTORE_TOP_OF_STACK are simplified as well. Signed-off-by: Denys Vlasenko <dvlasenk@redhat.com> Cc: Alexei Starovoitov <ast@plumgrid.com> Cc: Andy Lutomirski <luto@amacapital.net> Cc: Borislav Petkov <bp@alien8.de> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Kees Cook <keescook@chromium.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Oleg Nesterov <oleg@redhat.com> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Will Drewry <wad@chromium.org> Link: http://lkml.kernel.org/r/1425926364-9526-4-git-send-email-dvlasenk@redhat.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
2015-03-10x86/asm/entry/64: Remove stub_ioplDenys Vlasenko
stub_iopl is no longer needed: pt_regs->flags needs no fixing up after previous change. Remove it. Signed-off-by: Denys Vlasenko <dvlasenk@redhat.com> Cc: Alexei Starovoitov <ast@plumgrid.com> Cc: Borislav Petkov <bp@alien8.de> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Kees Cook <keescook@chromium.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Oleg Nesterov <oleg@redhat.com> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Will Drewry <wad@chromium.org> Link: http://lkml.kernel.org/r/1425984307-2143-1-git-send-email-dvlasenk@redhat.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
2015-03-10x86/asm/entry/64: Save R11 into pt_regs->flags on SYSCALL64 fastpathDenys Vlasenko
Before this patch, R11 was saved in pt_regs->r11. Which looks natural, but requires messy shuffling to/from iret frame whenever ptrace or e.g. sys_iopl() wants to modify flags - because that's how this register is used by SYSCALL/SYSRET. This patch saves R11 in pt_regs->flags, and uses that value for the SYSRET64 instruction. Shuffling is eliminated. FIXUP/RESTORE_TOP_OF_STACK are simplified. stub_iopl is no longer needed: pt_regs->flags needs no fixing up. Testing shows that syscall fast path is ~54.3 ns before and after the patch (on 2.7 GHz Sandy Bridge CPU). Signed-off-by: Denys Vlasenko <dvlasenk@redhat.com> Cc: Alexei Starovoitov <ast@plumgrid.com> Cc: Andy Lutomirski <luto@amacapital.net> Cc: Borislav Petkov <bp@alien8.de> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Kees Cook <keescook@chromium.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Oleg Nesterov <oleg@redhat.com> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Will Drewry <wad@chromium.org> Link: http://lkml.kernel.org/r/1425926364-9526-2-git-send-email-dvlasenk@redhat.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
2015-03-10drm/i915: Do both mt and gen6 style forcewake reset on ivb probeMika Kuoppala
commit 05a2fb157e44 ("drm/i915: Consolidate forcewake code") failed to take into account that we have used to reset both the gen6 style and the multithreaded style forcewake registers. This is due to fact that ivb can use either, depending on how the bios has set up the machine. Mimic the old semantics before we have determined the correct variety and reset both before the ecobus probe. Cc: Chris Wilson <chris@chris-wilson.co.uk> Cc: Huang Ying <ying.huang@intel.com> Signed-off-by: Mika Kuoppala <mika.kuoppala@intel.com> Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk> Signed-off-by: Jani Nikula <jani.nikula@intel.com>
2015-03-10drm/i915: Make WAIT_IOCTL negative timeouts be indefinite againChris Wilson
This fixes a regression from commit 5ed0bdf21a85d78e04f89f15ccf227562177cbd9 Author: Thomas Gleixner <tglx@linutronix.de> Date: Wed Jul 16 21:05:06 2014 +0000 drm: i915: Use nsec based interfaces that made a negative timeout return immediately rather than the previously defined behaviour of waiting indefinitely. Testcase: igt/gem_wait Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=89494 Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Cc: Daniel Vetter <daniel.vetter@ffwll.ch> Cc: Ben Widawsky <benjamin.widawsky@intel.com> Cc: Kristian Høgsberg <krh@bitplanet.net> Cc: stable@vger.kernel.org Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch> [Jani: fixed a checkpatch complaint about whitespace.] Signed-off-by: Jani Nikula <jani.nikula@intel.com>
2015-03-10drm/i915: use in_interrupt() not in_irq() to check contextDave Gordon
The kernel in_irq() function tests for hard-IRQ context only, so if a system is run with the kernel 'threadirqs' option selected, the test in intel_check_page_flip() generates lots of warnings, because then it gets called in soft-IRQ context. We can instead use in_interrupt() which allows for either type of interrupt, while still detecting and complaining about misuse of the page flip code if it is ever called from non-interrupt context. Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=89321 Signed-off-by: Dave Gordon <david.s.gordon@intel.com> Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch> Cc: stable@vger.kernel.org Signed-off-by: Jani Nikula <jani.nikula@intel.com>
2015-03-10pinctrl: update direction_output function of cherryview driverqipeng.zha
From the comments of gpiod_direction_output(), need to set @value as initial output, so update the lowlevel routine to make it work. Signed-off-by: jason.cj.chen<jason.cj.chen@intel.com> Signed-off-by: qipeng.zha <qipeng.zha@intel.com> Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2015-03-10x86/fpu: Factor out memset(xstate, 0) in fpu_finit() pathsOleg Nesterov
fx_finit() has two users but only fpu_finit() needs to clear xstate, alloc_bootmem_align() in setup_init_fpu_buf() returns zero-filled memory. And note that both memset()'s look confusing. Yes, offsetof() is 0 for ->fxsave or ->fsave, but it would be cleaner to turn them into a single memset() which zeroes fpu->state. Signed-off-by: Oleg Nesterov <oleg@redhat.com> Signed-off-by: Borislav Petkov <bp@suse.de> Acked-by: Rik van Riel <riel@redhat.com> Cc: Andy Lutomirski <luto@amacapital.net> Cc: Borislav Petkov <bp@alien8.de> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Tavis Ormandy <taviso@google.com> Cc: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/r/1425967585-4725-2-git-send-email-bp@alien8.de Link: http://lkml.kernel.org/r/20150302183257.GC23085@redhat.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
2015-03-10x86/fpu: Change xstateregs_get()/set() to use ->xsave.i387 rather than ->fxsaveOleg Nesterov
This is a cosmetic change: xstateregs_get() and xstateregs_set() abuse ->fxsave to access xsave->i387.sw_reserved. This practice is correct, ->fxsave and xsave->i387 share the same memory, but IMHO this looks confusing. And we can make this code more readable if we add a "struct xsave_struct *" local variable as well. Signed-off-by: Oleg Nesterov <oleg@redhat.com> Signed-off-by: Borislav Petkov <bp@suse.de> Reviewed-by: Rik van Riel <riel@redhat.com> Cc: Andy Lutomirski <luto@amacapital.net> Cc: Borislav Petkov <bp@alien8.de> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Tavis Ormandy <taviso@google.com> Cc: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/r/1425967585-4725-1-git-send-email-bp@alien8.de Link: http://lkml.kernel.org/r/20150302183237.GB23085@redhat.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
2015-03-10sched/deadline: Add rq->clock update skip for dl task yieldWanpeng Li
This patch adds rq->clock update skip for SCHED_DEADLINE task yield, to tell update_rq_clock() that we've just updated the clock, so that we don't do a microscopic update in schedule() and double the fastpath cost. Signed-off-by: Wanpeng Li <wanpeng.li@linux.intel.com> Cc: Juri Lelli <juri.lelli@arm.com> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/1425961200-3809-1-git-send-email-wanpeng.li@linux.intel.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
2015-03-10net: WIZnet drivers: enable interrupts after napi_complete()Yongbae Park
The interrupt is enabled before napi_complete(). A network timeout occurs if the interrupt handler is called before napi_complete(). Fix the bug by enabling the interrupt after napi_complete(). Signed-off-by: Yongbae Park <yongbae2@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-03-10ibmveth: enable interrupts after napi_complete()Yongbae Park
The interrupt is enabled before napi_complete(). A network timeout occurs if the interrupt handler is called before napi_complete(). Fix the bug by enabling the interrupt after napi_complete(). Signed-off-by: Yongbae Park <yongbae2@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-03-10drm/mst: fix recursive sleep warning on qlockDaniel Vetter
With drm-next, we can get a backtrace from sleeping with mutex detection. this is due to the callback checking the txmsg state taking the mutex, which can cause a sleep inside a sleep, Daniel went over it and was happy we could drop this mutex in this case. Signed-off-by: Dave Airlie <airlied@redhat.com>
2015-03-09net_sched: fix struct tc_u_hnode layout in u32WANG Cong
We dynamically allocate divisor+1 entries for ->ht[] in tc_u_hnode: ht = kzalloc(sizeof(*ht) + divisor*sizeof(void *), GFP_KERNEL); So ->ht is supposed to be the last field of this struct, however this is broken, since an rcu head is appended after it. Fixes: 1ce87720d456 ("net: sched: make cls_u32 lockless") Cc: Jamal Hadi Salim <jhs@mojatatu.com> Cc: John Fastabend <john.fastabend@gmail.com> Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com> Acked-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-03-10x86/asm/entry/32: Fix user_mode() misusesAndy Lutomirski
The one in do_debug() is probably harmless, but better safe than sorry. Signed-off-by: Andy Lutomirski <luto@amacapital.net> Cc: <stable@vger.kernel.org> Cc: Borislav Petkov <bp@alien8.de> Cc: Dave Hansen <dave.hansen@linux.intel.com> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/r/d67deaa9df5458363623001f252d1aee3215d014.1425948056.git.luto@amacapital.net Signed-off-by: Ingo Molnar <mingo@kernel.org>
2015-03-09Merge git://git.kernel.org/pub/scm/virt/kvm/kvmLinus Torvalds
Pull kvm/s390 bugfixes from Marcelo Tosatti. * git://git.kernel.org/pub/scm/virt/kvm/kvm: KVM: s390: non-LPAR case obsolete during facilities mask init KVM: s390: include guest facilities in kvm facility test KVM: s390: fix in memory copy of facility lists KVM: s390/cpacf: Fix kernel bug under z/VM KVM: s390/cpacf: Enable key wrapping by default
2015-03-09Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux Pull s390 fixes from Martin Schwidefsky: "One performance optimization for page_clear and a couple of bug fixes" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: s390/mm: fix incorrect ASCE after crst_table_downgrade s390/ftrace: fix crashes when switching tracers / add notrace to cpu_relax() s390/pci: unify pci_iomap symbol exports s390/pci: fix [un]map_resources sequence s390: let the compiler do page clearing s390/pci: fix possible information leak in mmio syscall s390/dcss: array index 'i' is used before limits check. s390/scm_block: fix off by one during cluster reservation s390/jump label: improve and fix sanity check s390/jump label: add missing jump_label_apply_nops() call
2015-03-10drm: Don't assign fbs for universal cursor support to filesChris Wilson
The internal framebuffers we create to remap legacy cursor ioctls to plane operations for the universal plane support shouldn't be linke to the file like normal userspace framebuffers. This bug goes back to the original universal cursor plane support introduced in commit 161d0dc1dccb17ff7a38f462c7c0d4ef8bcc5662 Author: Matt Roper <matthew.d.roper@intel.com> Date: Tue Jun 10 08:28:10 2014 -0700 drm: Support legacy cursor ioctls via universal planes when possible (v4) The isn't too disastrous since fbs are small, we only create one when the cursor bo gets changed and ultimately they'll be reaped when the window server restarts. Conceptually we'd want to just pass NULL for file_priv when creating it, but the driver needs the file to lookup the underlying buffer object for cursor id. Instead let's move the file_priv linking out of add_framebuffer_internal() into the addfb ioctl implementation, which is the only place it is needed. And also rename the function for a more accurate since it only creates the fb, but doesn't add it anywhere. Signed-off-by: Daniel Vetter <daniel.vetter@intel.com> (fix & commit msg) Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> (provider of lipstick) Reviewed-by: Matt Roper <matthew.d.roper@intel.com> Cc: Ville Syrjälä <ville.syrjala@linux.intel.com> Cc: Matt Roper <matthew.d.roper@intel.com> Cc: Rob Clark <robdclark@gmail.com> Cc: stable@vger.kernel.org Signed-off-by: Dave Airlie <airlied@redhat.com>
2015-03-09Merge tag 'trace-fixes-v4.0-rc2-2' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace Pull seq-buf/ftrace fixes from Steven Rostedt: "This includes fixes for seq_buf_bprintf() truncation issue. It also contains fixes to ftrace when /proc/sys/kernel/ftrace_enabled and function tracing are started. Doing the following causes some issues: # echo 0 > /proc/sys/kernel/ftrace_enabled # echo function_graph > /sys/kernel/debug/tracing/current_tracer # echo 1 > /proc/sys/kernel/ftrace_enabled # echo nop > /sys/kernel/debug/tracing/current_tracer # echo function_graph > /sys/kernel/debug/tracing/current_tracer As well as with function tracing too. Pratyush Anand first reported this issue to me and supplied a patch. When I tested this on my x86 test box, it caused thousands of backtraces and warnings to appear in dmesg, which also caused a denial of service (a warning for every function that was listed). I applied Pratyush's patch but it did not fix the issue for me. I looked into it and found a slight problem with trampoline accounting. I fixed it and sent Pratyush a patch, but he said that it did not fix the issue for him. I later learned tha Pratyush was using an ARM64 server, and when I tested on my ARM board, I was able to reproduce the same issue as Pratyush. After applying his patch, it fixed the problem. The above test uncovered two different bugs, one in x86 and one in ARM and ARM64. As this looked like it would affect PowerPC, I tested it on my PPC64 box. It too broke, but neither the patch that fixed ARM or x86 fixed this box (the changes were all in generic code!). The above test, uncovered two more bugs that affected PowerPC. Again, the changes were only done to generic code. It's the way the arch code expected things to be done that was different between the archs. Some where more sensitive than others. The rest of this series fixes the PPC bugs as well" * tag 'trace-fixes-v4.0-rc2-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace: ftrace: Fix ftrace enable ordering of sysctl ftrace_enabled ftrace: Fix en(dis)able graph caller when en(dis)abling record via sysctl ftrace: Clear REGS_EN and TRAMP_EN flags on disabling record via sysctl seq_buf: Fix seq_buf_bprintf() truncation seq_buf: Fix seq_buf_vprintf() truncation
2015-03-10virtio-balloon: do not call blocking ops when !TASK_RUNNINGMichael S. Tsirkin
virtio balloon has this code: wait_event_interruptible(vb->config_change, (diff = towards_target(vb)) != 0 || vb->need_stats_update || kthread_should_stop() || freezing(current)); Which is a problem because towards_target() call might block after wait_event_interruptible sets task state to TAST_INTERRUPTIBLE, causing the task_struct::state collision typical of nesting of sleeping primitives See also http://lwn.net/Articles/628628/ or Thomas's bug report http://article.gmane.org/gmane.linux.kernel.virtualization/24846 for a fuller explanation. To fix, rewrite using wait_woken. Cc: stable@vger.kernel.org Reported-by: Thomas Huth <thuth@linux.vnet.ibm.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Tested-by: Thomas Huth <thuth@linux.vnet.ibm.com> Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2015-03-10virtio_blk: fix comment for virtio 1.0Michael S. Tsirkin
Fix up comment to match virtio 1.0 logic: virtio_blk_outhdr isn't the first elements anymore, the only requirement is that it comes first in the s/g list. Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2015-03-10virtio_blk: typo fixMichael S. Tsirkin
Now that QEmu reuses linux virtio headers, we noticed a typo in the exported virtio block header. Fix it up. Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2015-03-10virtio_balloon: set DRIVER_OK before using deviceMichael S. Tsirkin
virtio spec requires that all drivers set DRIVER_OK before using devices. While balloon isn't yet included in the virtio 1 spec, previous spec versions also required this. virtio balloon might violate this rule: probe calls kthread_run before setting DRIVER_OK, which might run immediately and cause balloon to inflate/deflate. To fix, call virtio_device_ready before running the kthread. Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Cc: stable@kernel.org
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