/* * sync fence merge tests * Copyright 2015-2016 Collabora Ltd. * * Based on the implementation from the Android Open Source Project, * * Copyright 2012 Google, Inc * * Permission is hereby granted, free of charge, to any person obtaining a * copy of this software and associated documentation files (the "Software"), * to deal in the Software without restriction, including without limitation * the rights to use, copy, modify, merge, publish, distribute, sublicense, * and/or sell copies of the Software, and to permit persons to whom the * Software is furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR * OTHER DEALINGS IN THE SOFTWARE. */ #include "sync.h" #include "sw_sync.h" #include "synctest.h" int test_fence_merge_same_fence(void) { int fence, valid, merged; int timeline = sw_sync_timeline_create(); valid = sw_sync_timeline_is_valid(timeline); ASSERT(valid, "Failure allocating timeline\n"); fence = sw_sync_fence_create(timeline, "allocFence", 5); valid = sw_sync_fence_is_valid(fence); ASSERT(valid, "Failure allocating fence\n"); merged = sync_merge("mergeFence", fence, fence); valid = sw_sync_fence_is_valid(fence); ASSERT(valid, "Failure merging fence\n"); ASSERT(sync_fence_count_with_status(merged, FENCE_STATUS_SIGNALED) == 0, "fence signaled too early!\n"); sw_sync_timeline_inc(timeline, 5); ASSERT(sync_fence_count_with_status(merged, FENCE_STATUS_SIGNALED) == 1, "fence did not signal!\n"); sw_sync_fence_destroy(merged); sw_sync_fence_destroy(fence); sw_sync_timeline_destroy(timeline); return 0; } put type='hidden' name='id' value='c26665ab5c49ad3e142e0f054ca3204f259ba09c'/>
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authorBorislav Petkov <bp@suse.de>2017-01-20 21:29:40 +0100
committerThomas Gleixner <tglx@linutronix.de>2017-01-23 09:39:55 +0100
commitc26665ab5c49ad3e142e0f054ca3204f259ba09c (patch)
tree3bab11918e18e9d25ef7544dba05cdf39d1abec5 /fs/nfsd/vfs.c
parent7a308bb3016f57e5be11a677d15b821536419d36 (diff)
x86/microcode/intel: Drop stashed AP patch pointer optimization
This was meant to save us the scanning of the microcode containter in the initrd since the first AP had already done that but it can also hurt us: Imagine a single hyperthreaded CPU (Intel(R) Atom(TM) CPU N270, for example) which updates the microcode on the BSP but since the microcode engine is shared between the two threads, the update on CPU1 doesn't happen because it has already happened on CPU0 and we don't find a newer microcode revision on CPU1. Which doesn't set the intel_ucode_patch pointer and at initrd jettisoning time we don't save the microcode patch for later application. Now, when we suspend to RAM, the loaded microcode gets cleared so we need to reload but there's no patch saved in the cache. Removing the optimization fixes this issue and all is fine and dandy. Fixes: 06b8534cb728 ("x86/microcode: Rework microcode loading") Signed-off-by: Borislav Petkov <bp@suse.de> Reviewed-by: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/r/20170120202955.4091-2-bp@alien8.de Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'fs/nfsd/vfs.c')