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2016-05-05ARM: 8573/1: domain: move {set,get}_domain under config guardVladimir Murzin
Recursive undefined instrcution falut is seen with R-class taking an exception. The reson for that is __show_regs() tries to get domain information, but domains is not available on !MMU cores, like R/M class. Fix it by puting {set,get}_domain functions under CONFIG_CPU_CP15_MMU guard and providing stubs for the case where domains is not supported. Signed-off-by: Vladimir Murzin <vladimir.murzin@arm.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2016-05-05ARM: 8572/1: nommu: change memory reserve for the vectorsJean-Philippe Brucker
Commit 19accfd3 (ARM: move vector stubs) moved the vector stubs in an additional page above the base vector one. This change wasn't taken into account by the nommu memreserve. This patch ensures that the kernel won't overwrite any vector stub on nommu. [changed the MPU side too] Signed-off-by: Jean-Philippe Brucker <jean-philippe.brucker@arm.com> Signed-off-by: Vladimir Murzin <vladimir.murzin@arm.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2016-05-05ARM: 8571/1: nommu: fix PMSAv7 setupJean-Philippe Brucker
Commit 1c2f87c (ARM: 8025/1: Get rid of meminfo) broke the support for MPU on ARMv7-R. This patch adapts the code inside CONFIG_ARM_MPU to use memblocks appropriately. MPU initialisation only uses the first memory region, and removes all subsequent ones. Because looping over all regions that need removal is inefficient, and memblock_remove already handles memory ranges, we can flatten the 'for_each_memblock' part. Signed-off-by: Jean-Philippe Brucker <jean-philippe.brucker@arm.com> Signed-off-by: Vladimir Murzin <vladimir.murzin@arm.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2016-05-05IB/iser: Fix max_sectors calculationChristoph Hellwig
iSER currently has a couple places that set max_sectors in either the host template or SCSI host, and all of them get it wrong. This patch instead uses a single assignment that (hopefully) gets it right: the max_sectors value must be derived from the number of segments in the FR or FMR structure, but actually be one lower than the page size multiplied by the number of sectors, as it has to handle the case of non-aligned I/O. Without this I get trivial to reproduce hangs when running xfstests (on XFS) over iSER to Linux targets. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Max Gurtovoy <maxg@mellanox.com> Acked-by: Sagi Grimberg <sagi@grimberg.me> Signed-off-by: Doug Ledford <dledford@redhat.com>
2016-05-05Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace Pull userns fix from Eric Biederman: "This contains just a single fix for a nasty oops" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace: propogate_mnt: Handle the first propogated copy being a slave
2016-05-05Merge tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhostLinus Torvalds
Pull virtio/qemu fixes from Michael Tsirkin: "A couple of fixes for virtio and for the new QEMU fw cfg driver" * tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost: virtio: Silence uninitialized variable warning firmware: qemu_fw_cfg.c: potential unintialized variable
2016-05-05drm/radeon: fix PLL sharing on DCE6.1 (v2)Lucas Stach
On DCE6.1 PPLL2 is exclusively available to UNIPHYA, so it should not be taken into consideration when looking for an already enabled PLL to be shared with other outputs. This fixes the broken VGA port (TRAVIS DP->VGA bridge) on my Richland based laptop, where the internal display is connected to UNIPHYA through a TRAVIS DP->LVDS bridge. Bug: https://bugs.freedesktop.org/show_bug.cgi?id=78987 v2: agd: add check in radeon_get_shared_nondp_ppll as well, drop extra parameter. Signed-off-by: Lucas Stach <dev@lynxeye.de> Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Cc: stable@vger.kernel.org
2016-05-05drm/radeon: fix DP link training issue with second 4K monitorArindam Nath
There is an issue observed when we hotplug a second DP 4K monitor to the system. Sometimes, the link training fails for the second monitor after HPD interrupt generation. The issue happens when some queued or deferred transactions are already present on the AUX channel when we initiate a new transcation to (say) get DPCD or during link training. We set AUX_IGNORE_HPD_DISCON bit in the AUX_CONTROL register so that we can ignore any such deferred transactions when a new AUX transaction is initiated. Signed-off-by: Arindam Nath <arindam.nath@amd.com> Reviewed-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Cc: stable@vger.kernel.org
2016-05-05irqchip/alpine-msi: Don't use <asm-generic/msi.h>Christoph Hellwig
Signed-off-by: Christoph Hellwig <hch@lst.de> Cc: marc.zyngier@arm.com Cc: antoine.tenart@free-electrons.com Cc: jason@lakedaemon.net Cc: tsahee@annapurnalabs.com Link: http://lkml.kernel.org/r/1462459265-20974-1-git-send-email-hch@lst.de Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2016-05-05propogate_mnt: Handle the first propogated copy being a slaveEric W. Biederman
When the first propgated copy was a slave the following oops would result: > BUG: unable to handle kernel NULL pointer dereference at 0000000000000010 > IP: [<ffffffff811fba4e>] propagate_one+0xbe/0x1c0 > PGD bacd4067 PUD bac66067 PMD 0 > Oops: 0000 [#1] SMP > Modules linked in: > CPU: 1 PID: 824 Comm: mount Not tainted 4.6.0-rc5userns+ #1523 > Hardware name: Bochs Bochs, BIOS Bochs 01/01/2007 > task: ffff8800bb0a8000 ti: ffff8800bac3c000 task.ti: ffff8800bac3c000 > RIP: 0010:[<ffffffff811fba4e>] [<ffffffff811fba4e>] propagate_one+0xbe/0x1c0 > RSP: 0018:ffff8800bac3fd38 EFLAGS: 00010283 > RAX: 0000000000000000 RBX: ffff8800bb77ec00 RCX: 0000000000000010 > RDX: 0000000000000000 RSI: ffff8800bb58c000 RDI: ffff8800bb58c480 > RBP: ffff8800bac3fd48 R08: 0000000000000001 R09: 0000000000000000 > R10: 0000000000001ca1 R11: 0000000000001c9d R12: 0000000000000000 > R13: ffff8800ba713800 R14: ffff8800bac3fda0 R15: ffff8800bb77ec00 > FS: 00007f3c0cd9b7e0(0000) GS:ffff8800bfb00000(0000) knlGS:0000000000000000 > CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 > CR2: 0000000000000010 CR3: 00000000bb79d000 CR4: 00000000000006e0 > Stack: > ffff8800bb77ec00 0000000000000000 ffff8800bac3fd88 ffffffff811fbf85 > ffff8800bac3fd98 ffff8800bb77f080 ffff8800ba713800 ffff8800bb262b40 > 0000000000000000 0000000000000000 ffff8800bac3fdd8 ffffffff811f1da0 > Call Trace: > [<ffffffff811fbf85>] propagate_mnt+0x105/0x140 > [<ffffffff811f1da0>] attach_recursive_mnt+0x120/0x1e0 > [<ffffffff811f1ec3>] graft_tree+0x63/0x70 > [<ffffffff811f1f6b>] do_add_mount+0x9b/0x100 > [<ffffffff811f2c1a>] do_mount+0x2aa/0xdf0 > [<ffffffff8117efbe>] ? strndup_user+0x4e/0x70 > [<ffffffff811f3a45>] SyS_mount+0x75/0xc0 > [<ffffffff8100242b>] do_syscall_64+0x4b/0xa0 > [<ffffffff81988f3c>] entry_SYSCALL64_slow_path+0x25/0x25 > Code: 00 00 75 ec 48 89 0d 02 22 22 01 8b 89 10 01 00 00 48 89 05 fd 21 22 01 39 8e 10 01 00 00 0f 84 e0 00 00 00 48 8b 80 d8 00 00 00 <48> 8b 50 10 48 89 05 df 21 22 01 48 89 15 d0 21 22 01 8b 53 30 > RIP [<ffffffff811fba4e>] propagate_one+0xbe/0x1c0 > RSP <ffff8800bac3fd38> > CR2: 0000000000000010 > ---[ end trace 2725ecd95164f217 ]--- This oops happens with the namespace_sem held and can be triggered by non-root users. An all around not pleasant experience. To avoid this scenario when finding the appropriate source mount to copy stop the walk up the mnt_master chain when the first source mount is encountered. Further rewrite the walk up the last_source mnt_master chain so that it is clear what is going on. The reason why the first source mount is special is that it it's mnt_parent is not a mount in the dest_mnt propagation tree, and as such termination conditions based up on the dest_mnt mount propgation tree do not make sense. To avoid other kinds of confusion last_dest is not changed when computing last_source. last_dest is only used once in propagate_one and that is above the point of the code being modified, so changing the global variable is meaningless and confusing. Cc: stable@vger.kernel.org fixes: f2ebb3a921c1ca1e2ddd9242e95a1989a50c4c68 ("smarter propagate_mnt()") Reported-by: Tycho Andersen <tycho.andersen@canonical.com> Reviewed-by: Seth Forshee <seth.forshee@canonical.com> Tested-by: Seth Forshee <seth.forshee@canonical.com> Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
2016-05-05netfilter: nfnetlink_acct: validate NFACCT_QUOTA parameterPhil Turnbull
If a quota bit is set in NFACCT_FLAGS but the NFACCT_QUOTA parameter is missing then a NULL pointer dereference is triggered. CAP_NET_ADMIN is required to trigger the bug. Signed-off-by: Phil Turnbull <phil.turnbull@oracle.com> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2016-05-05netfilter: nf_tables: allow set names up to 32 bytesPablo Neira Ayuso
Currently, we support set names of up to 16 bytes, get this aligned with the maximum length we can use in ipset to make it easier when considering migration to nf_tables. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2016-05-05netfilter: x_tables: get rid of old and inconsistent debuggingPablo Neira Ayuso
The dprintf() and duprintf() functions are enabled at compile time, these days we have better runtime debugging through pr_debug() and static keys. On top of this, this debugging is so old that I don't expect anyone using this anymore, so let's get rid of this. IP_NF_ASSERT() is still left in place, although this needs that NETFILTER_DEBUG is enabled, I think these assertions provide useful context information when reading the code. Note that ARP_NF_ASSERT() has been removed as there is no user of this. Kill also DEBUG_ALLOW_ALL and a couple of pr_error() and pr_debug() spots that are inconsistently placed in the code. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2016-05-05openvswitch: __nf_ct_l{3,4}proto_find() always return a valid pointerPablo Neira Ayuso
If the protocol is not natively supported, this assigns generic protocol tracker so we can always assume a valid pointer after these calls. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org> Acked-by: Jarno Rajahalme <jrajahalme@nicira.com> Acked-by: Joe Stringer <joe@ovn.org>
2016-05-05netfilter: conntrack: introduce clash resolution on insertion racePablo Neira Ayuso
This patch introduces nf_ct_resolve_clash() to resolve race condition on conntrack insertions. This is particularly a problem for connection-less protocols such as UDP, with no initial handshake. Two or more packets may race to insert the entry resulting in packet drops. Another problematic scenario are packets enqueued to userspace via NFQUEUE after the raw table, that make it easier to trigger this race. To resolve this, the idea is to reset the conntrack entry to the one that won race. Packet and bytes counters are also merged. The 'insert_failed' stats still accounts for this situation, after this patch, the drop counter is bumped whenever we drop packets, so we can watch for unresolved clashes. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2016-05-05netfilter: conntrack: introduce nf_ct_acct_update()Pablo Neira Ayuso
Introduce a helper function to update conntrack counters. __nf_ct_kill_acct() was unnecessarily subtracting skb_network_offset() that is expected to be zero from the ipv4/ipv6 hooks. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2016-05-05netfilter: conntrack: __nf_ct_l4proto_find() always returns valid pointerPablo Neira Ayuso
Remove unnecessary check for non-nul pointer in destroy_conntrack() given that __nf_ct_l4proto_find() returns the generic protocol tracker if the protocol is not supported. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2016-05-05netfilter: conntrack: consider ct netns in early_drop logicFlorian Westphal
When iterating, skip conntrack entries living in a different netns. We could ignore netns and kill some other non-assured one, but it has two problems: - a netns can kill non-assured conntracks in other namespace - we would start to 'over-subscribe' the affected/overlimit netns. Signed-off-by: Florian Westphal <fw@strlen.de> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2016-05-05netfilter: conntrack: use a single hashtable for all namespacesFlorian Westphal
We already include netns address in the hash and compare the netns pointers during lookup, so even if namespaces have overlapping addresses entries will be spread across the table. Assuming 64k bucket size, this change saves 0.5 mbyte per namespace on a 64bit system. NAT bysrc and expectation hash is still per namespace, those will changed too soon. Future patch will also make conntrack object slab cache global again. Signed-off-by: Florian Westphal <fw@strlen.de> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2016-05-05netfilter: conntrack: make netns address part of hashFlorian Westphal
Once we place all conntracks into a global hash table we want them to be spread across entire hash table, even if namespaces have overlapping ip addresses. Signed-off-by: Florian Westphal <fw@strlen.de> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2016-05-05netfilter: conntrack: check netns when comparing conntrack objectsFlorian Westphal
Once we place all conntracks in the same hash table we must also compare the netns pointer to skip conntracks that belong to a different namespace. Signed-off-by: Florian Westphal <fw@strlen.de> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2016-05-05netfilter: conntrack: small refactoring of conntrack seq_printfFlorian Westphal
The iteration process is lockless, so we test if the conntrack object is eligible for printing (e.g. is AF_INET) after obtaining the reference count. Once we put all conntracks into same hash table we might see more entries that need to be skipped. So add a helper and first perform the test in a lockless fashion for fast skip. Once we obtain the reference count, just repeat the check. Note that this refactoring also includes a missing check for unconfirmed conntrack entries due to slab rcu object re-usage, so they need to be skipped since they are not part of the listing. Signed-off-by: Florian Westphal <fw@strlen.de> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2016-05-05netfilter: conntrack: use nf_ct_key_equal() in more placesFlorian Westphal
This prepares for upcoming change that places all conntracks into a single, global table. For this to work we will need to also compare net pointer during lookup. To avoid open-coding such check use the nf_ct_key_equal helper and then later extend it to also consider net_eq. Signed-off-by: Florian Westphal <fw@strlen.de> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2016-05-05netfilter: conntrack: don't attempt to iterate over empty tableFlorian Westphal
Once we place all conntracks into same table iteration becomes more costly because the table contains conntracks that we are not interested in (belonging to other netns). So don't bother scanning if the current namespace has no entries. Signed-off-by: Florian Westphal <fw@strlen.de> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2016-05-05netfilter: conntrack: fix lookup race during hash resizeFlorian Westphal
When resizing the conntrack hash table at runtime via echo 42 > /sys/module/nf_conntrack/parameters/hashsize, we are racing with the conntrack lookup path -- reads can happen in parallel and nothing prevents readers from observing a the newly allocated hash but the old size (or vice versa). So access to hash[bucket] can trigger OOB read access in case the table got expanded and we saw the new size but the old hash pointer (or it got shrunk and we got new hash ptr but the size of the old and larger table): kasan: GPF could be caused by NULL-ptr deref or user memory access general protection fault: 0000 [#1] SMP KASAN CPU: 0 PID: 3 Comm: ksoftirqd/0 Not tainted 4.6.0-rc2+ #107 [..] Call Trace: [<ffffffff822c3d6a>] ? nf_conntrack_tuple_taken+0x12a/0xe90 [<ffffffff822c3ac1>] ? nf_ct_invert_tuplepr+0x221/0x3a0 [<ffffffff8230e703>] get_unique_tuple+0xfb3/0x2760 Use generation counter to obtain the address/length of the same table. Also add a synchronize_net before freeing the old hash. AFAICS, without it we might access ct_hash[bucket] after ct_hash has been freed, provided that lockless reader got delayed by another event: CPU1 CPU2 seq_begin seq_retry <delay> resize occurs free oldhash for_each(oldhash[size]) Note that resize is only supported in init_netns, it took over 2 minutes of constant resizing+flooding to produce the warning, so this isn't a big problem in practice. Signed-off-by: Florian Westphal <fw@strlen.de> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2016-05-05netfilter: conntrack: keep BH enabled during lookupFlorian Westphal
No need to disable BH here anymore: stats are switched to _ATOMIC variant (== this_cpu_inc()), which nowadays generates same code as the non _ATOMIC NF_STAT, at least on x86. Signed-off-by: Florian Westphal <fw@strlen.de> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2016-05-05netfilter: nftables: add connlabel set supportFlorian Westphal
Conntrack labels are currently sized depending on the iptables ruleset, i.e. if we're asked to test or set bits 1, 2, and 65 then we would allocate enough room to store at least bit 65. However, with nft, the input is just a register with arbitrary runtime content. We therefore ask for the upper ceiling we currently have, which is enough room to store 128 bits. Alternatively, we could alter nf_connlabel_replace to increase net->ct.label_words at run time, but since 128 bits is not that big we'd only save sizeof(long) so it doesn't seem worth it for now. This follows a similar approach that xtables 'connlabel' match uses, so when user inputs ct label set bar then we will set the bit used by the 'bar' label and leave the rest alone. This is done by passing the sreg content to nf_connlabels_replace as both value and mask argument. Labels (bits) already set thus cannot be re-set to zero, but this is not supported by xtables connlabel match either. Signed-off-by: Florian Westphal <fw@strlen.de> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2016-05-05x86/sysfb_efi: Fix valid BAR address range checkWang YanQing
The code for checking whether a BAR address range is valid will break out of the loop when a start address of 0x0 is encountered. This behaviour is wrong since by breaking out of the loop we may miss the BAR that describes the EFI frame buffer in a later iteration. Because of this bug I can't use video=efifb: boot parameter to get efifb on my new ThinkPad E550 for my old linux system hard disk with 3.10 kernel. In 3.10, efifb is the only choice due to DRM/I915 not supporting the GPU. This patch also add a trivial optimization to break out after we find the frame buffer address range without testing later BARs. Signed-off-by: Wang YanQing <udknight@gmail.com> [ Rewrote changelog. ] Signed-off-by: Matt Fleming <matt@codeblueprint.co.uk> Reviewed-by: Peter Jones <pjones@redhat.com> Cc: <stable@vger.kernel.org> Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org> Cc: David Herrmann <dh.herrmann@gmail.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Tomi Valkeinen <tomi.valkeinen@ti.com> Cc: linux-efi@vger.kernel.org Link: http://lkml.kernel.org/r/1462454061-21561-2-git-send-email-matt@codeblueprint.co.uk Signed-off-by: Ingo Molnar <mingo@kernel.org>
2016-05-05ACPI / sysfs: fix error code in get_status()Dan Carpenter
The problem with ornamental, do-nothing gotos is that they lead to "forgot to set the error code" bugs. We should be returning -EINVAL here but we don't. It leads to an uninitalized variable in counter_show(): drivers/acpi/sysfs.c:603 counter_show() error: uninitialized symbol 'status'. Fixes: 1c8fce27e275 (ACPI: introduce drivers/acpi/sysfs.c) Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2016-05-05ACPICA: Update version to 20160422Bob Moore
ACPICA commit a2327ba410e19c2aabaf34b711dbadf7d1dcf346 Version 20160422. Link: https://github.com/acpica/acpica/commit/a2327ba4 Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2016-05-05ACPICA: Move all ASCII utilities to a common fileBob Moore
ACPICA commit ba60e4500053010bf775d58f6f61febbdb94d817 New file is utascii.c Link: https://github.com/acpica/acpica/commit/ba60e450 Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2016-05-05ACPICA: ACPI 2.0, Hardware: Add access_width/bit_offset support for ↵Lv Zheng
acpi_hw_write() ACPICA commit 48eea5e7993ccb7189bd63cd726e02adafee6057 This patch adds access_width/bit_offset support in acpi_hw_write(). Lv Zheng. Link: https://github.com/acpica/acpica/commit/48eea5e7 Link: https://bugs.acpica.org/show_bug.cgi?id=1240 Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2016-05-05ACPICA: ACPI 2.0, Hardware: Add access_width/bit_offset support in ↵Lv Zheng
acpi_hw_read() ACPICA commit 96ece052d4d073aae4f935f0ff0746646aea1174 ACPICA commit 3d8583a054e410f2ea4d73b48986facad9cfc0d4 This patch adds access_width/bit_offset support in acpi_hw_read(). This also enables GAS definition where bit_width is not a power of two. Lv Zheng. Link: https://github.com/acpica/acpica/commit/96ece052 Link: https://github.com/acpica/acpica/commit/3d8583a0 Link: https://bugs.acpica.org/show_bug.cgi?id=1240 Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2016-05-05ACPICA: Executer: Introduce a set of macros to handle bit width mask generationLv Zheng
ACPICA commit c23034a3a09d5ed79f1827d51f43cfbccf68ab64 A regression was reported to the shift offset >= width of type. This patch fixes this issue. BZ 1270. This is a part of the fix because the order of the patches are modified for Linux upstream, containing the cleanups for the old code. Lv Zheng. Link: https://github.com/acpica/acpica/commit/c23034a3 Link: https://bugs.acpica.org/show_bug.cgi?id=1270 Reported-by: Sascha Wildner <swildner@gmail.com> Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2016-05-05ACPICA: Hardware: Add optimized access bit width supportLv Zheng
ACPICA commit c49a751b4dae7baec1790748a2b4b6e8ab599f51 For Access Size = 0, it actually can use user expected access bit width. This patch implements this. Besides of the ACPICA upstream commit, this patch also includes a fix fixing the issue reported by the FreeBSD community. The old register descriptors are translated in acpi_tb_init_generic_address() with access_width being filled with 0. This breaks code in acpi_hw_get_access_bit_width() when the registers are 16-bit IO ports and their bit_width fields are filled with 16. The rapid fix is meant to make code written for acpi_hw_get_access_bit_width() regression safer before the issue is correctly fixed from acpi_tb_init_generic_address(). Reported by John Baldwin <jhb@freebsd.org>, fixed by Lv Zheng <lv.zheng@intel.com>, tested by Jung-uk Kim <jkim@freebsd.org>. Link: https://github.com/acpica/acpica/commit/c49a751b Reported-by: John Baldwin <jhb@freebsd.org> Tested-by Jung-uk Kim <jkim@freebsd.org>. Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2016-05-05ACPICA: Utilities: Add ACPI_IS_ALIGNED() macroLv Zheng
This patch introduces ACPI_IS_ALIGNED() macro. Lv Zheng. Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2016-05-05ACPICA: Renamed some #defined flag constants for clarityBob Moore
ACPICA commit 438905b205e64e742f9670a0970419c426264831 Expanded a couple of cryptic names. Link: https://github.com/acpica/acpica/commit/438905b2 Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2016-05-05ACPICA: ACPI 6.0, tools/iasl: Add support for new resource descriptorsBob Moore
ACPICA commit 5a0555ece4ba9917e5842b21d88469ae06b4e815 Adds full support for: i2c_serial_bus_v2 spi_serial_bus_v2 uart_serial_bus_v2 Compiler, Disassembler, Resource Manager, acpi_help. Link: https://github.com/acpica/acpica/commit/5a0555ec Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2016-05-05ACPICA: ACPI 6.0: Update _BIX support for new package elementBob Moore
ACPICA commit 3451e6d49d37919c13ec2c0019a31534b0dfc0c0 One integer was added at the end of the _BIX method, and the version number was incremented. Link: https://github.com/acpica/acpica/commit/3451e6d4 Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2016-05-05ACPICA: ACPI 6.1: Support for new PCCT subtableBob Moore
ACPICA commit de3ea7c322b9b6bdb09aa90c2e1d420cd4dce47c Additional subspace structure was added. Link: https://github.com/acpica/acpica/commit/de3ea7c3 Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2016-05-05ACPICA: Refactor evaluate_object to reduce nestingBob Moore
ACPICA commit 599e9159f53565e4a3f3e67f6a03f81fcb10a4cf Original patch from hanjun.guo@linaro.org ACPICA BZ 1072. Link: https://github.com/acpica/acpica/commit/599e9159 Link: https://bugs.acpica.org/show_bug.cgi?id=1072 Original-by: Hanjun Guo <hanjun.guo@linaro.org> Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2016-05-05ACPICA: Divergence: remove unwanted spaces for typedefLv Zheng
ACPICA commit b2294cae776f5a66a7697414b21949d307e6856f This patch removes unwanted spaces for typedef. This solution doesn't cover function types. Note that the linuxize result of this commit is very giant and should have many conflicts against the current Linux upstream. Thus it is required to modify the linuxize result of this commit and the commits around it manually in order to have them merged to the Linux upstream. Since this is very costy, we should do this only once, and if we can't ensure to do this only once, we need to revert the Linux code to the wrong indentation result before merging the linuxize result of this commit. Lv Zheng. Link: https://github.com/acpica/acpica/commit/b2294cae Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2016-05-05ARC: support HIGHMEM even without PAE40Vineet Gupta
Initial HIGHMEM support on ARC was introduced for PAE40 where the low memory (0x8000_0000 based) and high memory (0x1_0000_0000) were physically contiguous. So CONFIG_FLATMEM sufficed (despite a peipheral hole in the middle, which wasted a bit of struct page memory, but things worked). However w/o PAE, highmem was not possible and we could only reach ~1.75GB of DDR. Now there is a use case to access ~4GB of DDR w/o PAE40 The idea is to have low memory at canonical 0x8000_0000 and highmem at 0 so enire 4GB address space is available for physical addressing This needs additional platform/interconnect mapping to convert the non contiguous physical addresses into linear bus adresses. From Linux point of view, non contiguous divide means FLATMEM no longer works and DISCONTIGMEM is needed to track the pfns in the 2 regions. This scheme would also work for PAE40, only better in that we don't waste struct page memory for the peripheral hole. The DT description will be something like memory { ... reg = <0x80000000 0x200000000 /* 512MB: lowmem */ 0x00000000 0x10000000>; /* 256MB: highmem */ } Signed-off-by: Noam Camus <noamc@ezchip.com> Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2016-05-05ARC: Fix PAE40 boot failures due to PTE truncationVineet Gupta
So a benign looking cleanup which macro'ized PAGE_SHIFT shifts turned out to be bad (since it was done non-sensically across the board). It caused boot failures with PAE40 as forced cast to (unsigned long) from newly introduced virt_to_pfn() was causing truncatiion of the (long long) pte/paddr values. It is OK to use this in accessors dealing with kernel virtual address, pointers etc, but not for PTE values themelves. Fixes: cJ2ff5cf2735c ("ARC: mm: Use virt_to_pfn() for addr >> PAGE_SHIFT pattern) Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2016-05-05ARC: Add missing io barriers to io{read,write}{16,32}be()Vineet Gupta
While reviewing a different change to asm-generic/io.h Arnd spotted that ARC ioread32 and ioread32be both of which come from asm-generic versions are not symmetrical in terms of calling the io barriers. generic ioread32 -> ARC readl() [ has barriers] generic ioread32be -> __be32_to_cpu(__raw_readl()) [ lacks barriers] While generic ioread32be is being remediated to call readl(), that involves a swab32(), causing double swaps on ioread32be() on Big Endian systems. So provide our versions of big endian IO accessors to ensure io barrier calls while also keeping them optimal Suggested-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Arnd Bergmann <arnd@arndb.de> Cc: stable@vger.kernel.org [4.2+] Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2016-05-05[media] media-device: fix builds when USB or PCI is compiled as moduleMauro Carvalho Chehab
Just checking ifdef CONFIG_USB is not enough, if the USB is compiled as module. The same applies to PCI. Tested with the following .config alternatives: CONFIG_USB=m CONFIG_MEDIA_CONTROLLER=y CONFIG_MEDIA_SUPPORT=m CONFIG_VIDEO_AU0828=m CONFIG_USB=m CONFIG_MEDIA_CONTROLLER=y CONFIG_MEDIA_SUPPORT=y CONFIG_VIDEO_AU0828=m CONFIG_USB=y CONFIG_MEDIA_CONTROLLER=y CONFIG_MEDIA_SUPPORT=y CONFIG_VIDEO_AU0828=m CONFIG_USB=y CONFIG_MEDIA_CONTROLLER=y CONFIG_MEDIA_SUPPORT=y CONFIG_VIDEO_AU0828=y Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
2016-05-05arm64: mm: remove unnecessary EXPORT_SYMBOL_GPLYang Shi
arch_pick_mmap_layout is only called by fs/exec.c which is always built into kernel, it looks the EXPORT_SYMBOL_GPL is pointless and no architectures export it other than ARM64. Signed-off-by: Yang Shi <yang.shi@linaro.org> Signed-off-by: Will Deacon <will.deacon@arm.com>
2016-05-05perf/x86/intel/pt: Convert ACCESS_ONCE()sAlexander Shishkin
This patch converts remaining ACCESS_ONCE() instances into READ_ONCE() and WRITE_ONCE() as appropriate. Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: Arnaldo Carvalho de Melo <acme@infradead.org> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Borislav Petkov <bp@alien8.de> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Mathieu Poirier <mathieu.poirier@linaro.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Vince Weaver <vincent.weaver@maine.edu> Cc: vince@deater.net Link: http://lkml.kernel.org/r/1461857746-31346-2-git-send-email-alexander.shishkin@linux.intel.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
2016-05-05perf/x86/intel/pt: Export CPU frequency ratios needed by PT decodersAlexander Shishkin
Intel PT decoders need access to various bits of timing related information to be able to correctly decode timing packets from a PT stream (MTC and CBR packets). This patch exports all the necessary bits as sysfs attributes for the sake of consistency: * max_nonturbo_ratio: ratio between the invariant TSC and base clock; * tsc_art_ratio: TSC to core crystal clock ratio (also available as CPUID.15H). Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: Arnaldo Carvalho de Melo <acme@infradead.org> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Borislav Petkov <bp@alien8.de> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Mathieu Poirier <mathieu.poirier@linaro.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Vince Weaver <vincent.weaver@maine.edu> Cc: vince@deater.net Link: http://lkml.kernel.org/r/87zisdvibe.fsf@ashishki-desk.ger.corp.intel.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
2016-05-05perf/x86/intel/pt: Bypass PT vs. LBR exclusivity if the core supports itAlexander Shishkin
Not all cores prevent using Intel PT and LBRs simultaneously, although most of them still do as of today. This patch adds an opt-in flag for such cores to disable mutual exclusivity between PT and LBR; also flip it on for Goldmont. Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: Arnaldo Carvalho de Melo <acme@infradead.org> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Borislav Petkov <bp@alien8.de> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Mathieu Poirier <mathieu.poirier@linaro.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Vince Weaver <vincent.weaver@maine.edu> Cc: vince@deater.net Link: http://lkml.kernel.org/r/1461857746-31346-4-git-send-email-alexander.shishkin@linux.intel.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
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