| Commit message (Collapse) | Author | Age |
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commit a2c435cc99862fd3d165e1b66bf48ac72c839c62 upstream.
The AES implementation using pure NEON instructions relies on the generic
AES key schedule generation routines, which store the round keys as arrays
of 32-bit quantities stored in memory using native endianness. This means
we should refer to these round keys using 4x4 loads rather than 16x1 loads.
In addition, the ShiftRows tables are loading using a single scalar load,
which is also affected by endianness, so emit these tables in the correct
order depending on whether we are building for big endian or not.
Fixes: 49788fe2a128 ("arm64/crypto: AES-ECB/CBC/CTR/XTS using ARMv8 NEON and Crypto Extensions")
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 56e4e76c68fcb51547b5299e5b66a135935ff414 upstream.
The AES-CCM implementation that uses ARMv8 Crypto Extensions instructions
refers to the AES round keys as pairs of 64-bit quantities, which causes
failures when building the code for big endian. In addition, it byte swaps
the input counter unconditionally, while this is only required for little
endian builds. So fix both issues.
Fixes: 12ac3efe74f8 ("arm64/crypto: use crypto instructions to generate AES key schedule")
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 58010fa6f71c9577922b22e46014b95a4ec80fa0 upstream.
The AES key schedule generation is mostly endian agnostic, with the
exception of the rotation and the incorporation of the round constant
at the start of each round. So implement a big endian specific version
of that part to make the whole routine big endian compatible.
Fixes: 86464859cc77 ("crypto: arm - AES in ECB/CBC/CTR/XTS modes using ARMv8 Crypto Extensions")
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 9c433ad5083fd4a4a3c721d86cbfbd0b2a2326a5 upstream.
The GHASH key and digest are both pairs of 64-bit quantities, but the
GHASH code does not always refer to them as such, causing failures when
built for big endian. So replace the 16x1 loads and stores with 2x8 ones.
Fixes: b913a6404ce2 ("arm64/crypto: improve performance of GHASH algorithm")
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 174122c39c369ed924d2608fc0be0171997ce800 upstream.
The SHA256 digest is an array of 8 32-bit quantities, so we should refer
to them as such in order for this code to work correctly when built for
big endian. So replace 16 byte scalar loads and stores with 4x32 vector
ones where appropriate.
Fixes: 6ba6c74dfc6b ("arm64/crypto: SHA-224/SHA-256 using ARMv8 Crypto Extensions")
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 9e6e7c74315095fd40f41003850690c711e44420 upstream.
We added some new locking but forgot to unlock on error.
Fixes: 57127645d79d ("s390/zcrypt: Introduce new SHA-512 based Pseudo Random Generator.")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 328cf6927bb72cadefddebbc9a23c793108147a2 upstream.
If CONFIG_ETRAX_AXISFLASHMAP is not configured, the flash rescue image
object file is empty. With recent versions of binutils, this results
in the following build error.
cris-linux-objcopy: error:
the input file 'arch/cris/boot/rescue/rescue.o' has no sections
This is seen, for example, when trying to build cris:allnoconfig
with recently generated toolchains.
Since it does not make sense to build a flash rescue image if there is
no flash, only build it if CONFIG_ETRAX_AXISFLASHMAP is enabled.
Reported-by: kbuild test robot <fengguang.wu@intel.com>
Fixes: 66ab3a74c5ce ("CRIS: Merge machine dependent boot/compressed ..")
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Jesper Nilsson <jesper.nilsson@axis.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit dc8ee9dbdba509fb58e23ba79f2e6059fe5d8b3b upstream.
The parent clock of the HSUSB clock is the HP clock, not the MP clock.
Fixes: c7bab9f929e51761 ("ARM: shmobile: r8a7794: Add USB clocks to device tree")
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 32eb12a6c11034867401d56b012e3c15d5f8141e upstream.
Flush the KVM entry code from the icache on all CPUs, not just the one
that built the entry code.
Signed-off-by: James Hogan <james.hogan@imgtec.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: "Radim Krčmář" <rkrcmar@redhat.com>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: linux-mips@linux-mips.org
Cc: kvm@vger.kernel.org
Signed-off-by: Radim Krčmář <rkrcmar@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 6ef4e07ecd2db21025c446327ecf34414366498b upstream.
Otherwise, mismatch between the smm bit in hflags and the MMU role
can cause a NULL pointer dereference.
Signed-off-by: Xiao Guangrong <guangrong.xiao@linux.intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit ef37427ac5677331145ab27a17e6f5f1b43f0c11 upstream.
Similarly to the aemif clock - this screws up the linked list of clock
children. Create a separate clock for mdio inheriting the rate from
emac_clk.
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
[nsekhar@ti.com: add a comment over mdio_clk to explaing its existence +
commit headline updates]
Signed-off-by: Sekhar Nori <nsekhar@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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This is the 4.4.41 stable release
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commit 80f23935cadb1c654e81951f5a8b7ceae0acc1b4 upstream.
PowerPC's "cmp" instruction has four operands. Normally people write
"cmpw" or "cmpd" for the second cmp operand 0 or 1. But, frequently
people forget, and write "cmp" with just three operands.
With older binutils this is silently accepted as if this was "cmpw",
while often "cmpd" is wanted. With newer binutils GAS will complain
about this for 64-bit code. For 32-bit code it still silently assumes
"cmpw" is what is meant.
In this instance the code comes directly from ISA v2.07, including the
cmp, but cmpd is correct. Backport to stable so that new toolchains can
build old kernels.
Fixes: 948cf67c4726 ("powerpc: Add NAP mode support on Power7 in HV mode")
Reviewed-by: Vaidyanathan Srinivasan <svaidy@linux.vnet.ibm.com>
Signed-off-by: Segher Boessenkool <segher@kernel.crashing.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Joel Stanley <joel@jms.id.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 6dff5b67054e17c91bd630bcdda17cfca5aa4215 upstream.
GCC 5 generates different code for this bootwrapper null check that
causes the PS3 to hang very early in its bootup. This check is of
limited value, so just get rid of it.
Signed-off-by: Geoff Levand <geoff@infradead.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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to it
commit 847fa1a6d3d00f3bdf68ef5fa4a786f644a0dd67 upstream.
With new binutils, gcc may get smart with its optimization and change a jmp
from a 5 byte jump to a 2 byte one even though it was jumping to a global
function. But that global function existed within a 2 byte radius, and gcc
was able to optimize it. Unfortunately, that jump was also being modified
when function graph tracing begins. Since ftrace expected that jump to be 5
bytes, but it was only two, it overwrote code after the jump, causing a
crash.
This was fixed for x86_64 with commit 8329e818f149, with the same subject as
this commit, but nothing was done for x86_32.
Fixes: d61f82d06672 ("ftrace: use dynamic patching for updating mcount calls")
Reported-by: Colin Ian King <colin.king@canonical.com>
Tested-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit ef85b67385436ddc1998f45f1d6a210f935b3388 upstream.
When L2 exits to L0 due to "exception or NMI", software exceptions
(#BP and #OF) for which L1 has requested an intercept should be
handled by L1 rather than L0. Previously, only hardware exceptions
were forwarded to L1.
Signed-off-by: Jim Mattson <jmattson@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit f064a0de1579fabded8990bed93971e30deb9ecb upstream.
The hashed page table MMU in POWER processors can update the R
(reference) and C (change) bits in a HPTE at any time until the
HPTE has been invalidated and the TLB invalidation sequence has
completed. In kvmppc_h_protect, which implements the H_PROTECT
hypercall, we read the HPTE, modify the second doubleword,
invalidate the HPTE in memory, do the TLB invalidation sequence,
and then write the modified value of the second doubleword back
to memory. In doing so we could overwrite an R/C bit update done
by hardware between when we read the HPTE and when the TLB
invalidation completed. To fix this we re-read the second
doubleword after the TLB invalidation and OR in the (possibly)
new values of R and C. We can use an OR since hardware only ever
sets R and C, never clears them.
This race was found by code inspection. In principle this bug could
cause occasional guest memory corruption under host memory pressure.
Fixes: a8606e20e41a ("KVM: PPC: Handle some PAPR hcalls in the kernel", 2011-06-29)
Signed-off-by: Paul Mackerras <paulus@ozlabs.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 0d808df06a44200f52262b6eb72bcb6042f5a7c5 upstream.
When switching from/to a guest that has a transaction in progress,
we need to save/restore the checkpointed register state. Although
XER is part of the CPU state that gets checkpointed, the code that
does this saving and restoring doesn't save/restore XER.
This fixes it by saving and restoring the XER. To allow userspace
to read/write the checkpointed XER value, we also add a new ONE_REG
specifier.
The visible effect of this bug is that the guest may see its XER
value being corrupted when it uses transactions.
Fixes: e4e38121507a ("KVM: PPC: Book3S HV: Add transactional memory support")
Fixes: 0a8eccefcb34 ("KVM: PPC: Book3S HV: Add missing code for transaction reclaim on guest exit")
Signed-off-by: Paul Mackerras <paulus@ozlabs.org>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Paul Mackerras <paulus@ozlabs.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 08fe007968b2b45e831daf74899f79a54d73f773 upstream.
An ARC700 customer reported linux boot crashes when upgrading to bigger
L1 dcache (64K from 32K). Turns out they had an aliasing VIPT config and
current code only assumed 2 colours, while theirs had 4. So default to 4
colours and complain if there are fewer. Ideally this needs to be a
Kconfig option, but heck that's too much of hassle for a single user.
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 24d5373dda7c00a438d26016bce140299fae675e upstream.
The function xen_guest_init is using __alloc_percpu with an alignment
which are not power of two.
However, the percpu allocator never supported alignments which are not power
of two and has always behaved incorectly in thise case.
Commit 3ca45a4 "percpu: ensure requested alignment is power of two"
introduced a check which trigger a warning [1] when booting linux-next
on Xen. But in reality this bug was always present.
This can be fixed by replacing the call to __alloc_percpu with
alloc_percpu. The latter will use an alignment which are a power of two.
[1]
[ 0.023921] illegal size (48) or align (48) for percpu allocation
[ 0.024167] ------------[ cut here ]------------
[ 0.024344] WARNING: CPU: 0 PID: 1 at linux/mm/percpu.c:892 pcpu_alloc+0x88/0x6c0
[ 0.024584] Modules linked in:
[ 0.024708]
[ 0.024804] CPU: 0 PID: 1 Comm: swapper/0 Not tainted
4.9.0-rc7-next-20161128 #473
[ 0.025012] Hardware name: Foundation-v8A (DT)
[ 0.025162] task: ffff80003d870000 task.stack: ffff80003d844000
[ 0.025351] PC is at pcpu_alloc+0x88/0x6c0
[ 0.025490] LR is at pcpu_alloc+0x88/0x6c0
[ 0.025624] pc : [<ffff00000818e678>] lr : [<ffff00000818e678>]
pstate: 60000045
[ 0.025830] sp : ffff80003d847cd0
[ 0.025946] x29: ffff80003d847cd0 x28: 0000000000000000
[ 0.026147] x27: 0000000000000000 x26: 0000000000000000
[ 0.026348] x25: 0000000000000000 x24: 0000000000000000
[ 0.026549] x23: 0000000000000000 x22: 00000000024000c0
[ 0.026752] x21: ffff000008e97000 x20: 0000000000000000
[ 0.026953] x19: 0000000000000030 x18: 0000000000000010
[ 0.027155] x17: 0000000000000a3f x16: 00000000deadbeef
[ 0.027357] x15: 0000000000000006 x14: ffff000088f79c3f
[ 0.027573] x13: ffff000008f79c4d x12: 0000000000000041
[ 0.027782] x11: 0000000000000006 x10: 0000000000000042
[ 0.027995] x9 : ffff80003d847a40 x8 : 6f697461636f6c6c
[ 0.028208] x7 : 6120757063726570 x6 : ffff000008f79c84
[ 0.028419] x5 : 0000000000000005 x4 : 0000000000000000
[ 0.028628] x3 : 0000000000000000 x2 : 000000000000017f
[ 0.028840] x1 : ffff80003d870000 x0 : 0000000000000035
[ 0.029056]
[ 0.029152] ---[ end trace 0000000000000000 ]---
[ 0.029297] Call trace:
[ 0.029403] Exception stack(0xffff80003d847b00 to
0xffff80003d847c30)
[ 0.029621] 7b00: 0000000000000030 0001000000000000
ffff80003d847cd0 ffff00000818e678
[ 0.029901] 7b20: 0000000000000002 0000000000000004
ffff000008f7c060 0000000000000035
[ 0.030153] 7b40: ffff000008f79000 ffff000008c4cd88
ffff80003d847bf0 ffff000008101778
[ 0.030402] 7b60: 0000000000000030 0000000000000000
ffff000008e97000 00000000024000c0
[ 0.030647] 7b80: 0000000000000000 0000000000000000
0000000000000000 0000000000000000
[ 0.030895] 7ba0: 0000000000000035 ffff80003d870000
000000000000017f 0000000000000000
[ 0.031144] 7bc0: 0000000000000000 0000000000000005
ffff000008f79c84 6120757063726570
[ 0.031394] 7be0: 6f697461636f6c6c ffff80003d847a40
0000000000000042 0000000000000006
[ 0.031643] 7c00: 0000000000000041 ffff000008f79c4d
ffff000088f79c3f 0000000000000006
[ 0.031877] 7c20: 00000000deadbeef 0000000000000a3f
[ 0.032051] [<ffff00000818e678>] pcpu_alloc+0x88/0x6c0
[ 0.032229] [<ffff00000818ece8>] __alloc_percpu+0x18/0x20
[ 0.032409] [<ffff000008d9606c>] xen_guest_init+0x174/0x2f4
[ 0.032591] [<ffff0000080830f8>] do_one_initcall+0x38/0x130
[ 0.032783] [<ffff000008d90c34>] kernel_init_freeable+0xe0/0x248
[ 0.032995] [<ffff00000899a890>] kernel_init+0x10/0x100
[ 0.033172] [<ffff000008082ec0>] ret_from_fork+0x10/0x50
Reported-by: Wei Chen <wei.chen@arm.com>
Link: https://lkml.org/lkml/2016/11/28/669
Signed-off-by: Julien Grall <julien.grall@arm.com>
Signed-off-by: Stefano Stabellini <sstabellini@kernel.org>
Reviewed-by: Stefano Stabellini <sstabellini@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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(Cherry picked from commit 57efac2f7108e3255d0dfe512290c9896f4ed55f)
In spite of its name, CONFIG_DEBUG_RODATA is an important hardening feature
for production kernels, and distros all enable it by default in their
kernel configs. However, since enabling it used to result in more granular,
and thus less efficient kernel mappings, it is not enabled by default for
performance reasons.
However, since commit 2f39b5f91eb4 ("arm64: mm: Mark .rodata as RO"), the
various kernel segments (.text, .rodata, .init and .data) are already
mapped individually, and the only effect of setting CONFIG_DEBUG_RODATA is
that the existing .text and .rodata mappings are updated late in the boot
sequence to have their read-only attributes set, which means that any
performance concerns related to enabling CONFIG_DEBUG_RODATA are no longer
valid.
So from now on, make CONFIG_DEBUG_RODATA default to 'y'
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Acked-by: Mark Rutland <mark.rutland@arm.com>
Acked-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Amit Pundir <amit.pundir@linaro.org>
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Bug: 31648368
Change-Id: I3715cc6474129ba2176be62ed2c0a7d09a6f2ac7
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Conflicts:
replaced with _ASM_EXTABLE() in arch/arm64/include/asm/futex.h
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commit 7e251bb21ae08ca2e4fb28cc0981fac2685a8efa upstream.
The current ndelay() macro definition has an extra semi-colon at the
end of the line thus leading to a compilation error when ndelay is used
in a conditional block without curly braces like this one:
if (cond)
ndelay(t);
else
...
which, after the preprocessor pass gives:
if (cond)
m68k_ndelay(t);;
else
...
thus leading to the following gcc error:
error: 'else' without a previous 'if'
Remove this extra semi-colon.
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Fixes: c8ee038bd1488 ("m68k: Implement ndelay() based on the existing udelay() logic")
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 811d61e384e24759372bb3f01772f3744b0a8327 upstream.
futex.h's futex_atomic_cmpxchg_inatomic() does not use the
__futex_atomic_op() macro and needs its own PAN toggling. This was missed
when the feature was implemented.
Fixes: 338d4f49d6f ("arm64: kernel: Add support for Privileged Access Never")
Signed-off-by: James Morse <james.morse@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Cc: Mian Yousaf Kaukab <yousaf.kaukab@suse.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 7f612a7f0bc13a2361a152862435b7941156b6af upstream.
Lukasz reported that perf stat counters overflow handling is broken on KNL/SLM.
Both these parts have full_width_write set, and that does indeed have
a problem. In order to deal with counter wrap, we must sample the
counter at at least half the counter period (see also the sampling
theorem) such that we can unambiguously reconstruct the count.
However commit:
069e0c3c4058 ("perf/x86/intel: Support full width counting")
sets the sampling interval to the full period, not half.
Fixing that exposes another issue, in that we must not sign extend the
delta value when we shift it right; the counter cannot have
decremented after all.
With both these issues fixed, counter overflow functions correctly
again.
Reported-by: Lukasz Odzioba <lukasz.odzioba@intel.com>
Tested-by: Liang, Kan <kan.liang@intel.com>
Tested-by: Odzioba, Lukasz <lukasz.odzioba@intel.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.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>
Fixes: 069e0c3c4058 ("perf/x86/intel: Support full width counting")
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 24d0492b7d5d321a9c5846c8c974eba9823ffaa0 upstream.
At bootup we run measurements to calculate the best threshold for when we
should be using full TLB flushes instead of just flushing a specific amount of
TLB entries. This performance test is run over the kernel text segment.
But running this TLB performance test on the kernel text segment turned out to
crash some SMP machines when the kernel text pages were mapped as huge pages.
To avoid those crashes this patch simply skips this test on some SMP machines
and calculates an optimal threshold based on the maximum number of available
TLB entries and number of online CPUs.
On a technical side, this seems to happen:
The TLB measurement code uses flush_tlb_kernel_range() to flush specific TLB
entries with a page size of 4k (pdtlb 0(sr1,addr)). On UP systems this purge
instruction seems to work without problems even if the pages were mapped as
huge pages. But on SMP systems the TLB purge instruction is broadcasted to
other CPUs. Those CPUs then crash the machine because the page size is not as
expected. C8000 machines with PA8800/PA8900 CPUs were not affected by this
problem, because the required cache coherency prohibits to use huge pages at
all. Sadly I didn't found any documentation about this behaviour, so this
finding is purely based on testing with phyiscal SMP machines (A500-44 and
J5000, both were 2-way boxes).
Signed-off-by: Helge Deller <deller@gmx.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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flush_icache_page_asm
commit febe42964fe182281859b3d43d844bb25ca49367 upstream.
We have four routines in pacache.S that use temporary alias pages:
copy_user_page_asm(), clear_user_page_asm(), flush_dcache_page_asm() and
flush_icache_page_asm(). copy_user_page_asm() and clear_user_page_asm()
don't purge the TLB entry used for the operation.
flush_dcache_page_asm() and flush_icache_page_asm do purge the entry.
Presumably, this was thought to optimize TLB use. However, the
operation is quite heavy weight on PA 1.X processors as we need to take
the TLB lock and a TLB broadcast is sent to all processors.
This patch removes the purges from flush_dcache_page_asm() and
flush_icache_page_asm.
Signed-off-by: John David Anglin <dave.anglin@bell.net>
Signed-off-by: Helge Deller <deller@gmx.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit c78e710c1c9fbeff43dddc0aa3d0ff458e70b0cc upstream.
The attached change interchanges the order of purging the TLB and
setting the corresponding page table entry. TLB purges are strongly
ordered. It occurred to me one night that setting the PTE first might
have subtle ordering issues on SMP machines and cause random memory
corruption.
A TLB lock guards the insertion of user TLB entries. So after the TLB
is purged, a new entry can't be inserted until the lock is released.
This ensures that the new PTE value is used when the lock is released.
Since making this change, no random segmentation faults have been
observed on the Debian hppa buildd servers.
Signed-off-by: John David Anglin <dave.anglin@bell.net>
Signed-off-by: Helge Deller <deller@gmx.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 409bf7f8a02ef88db5a0f2cdcf9489914f4b8508 upstream.
In eeh_reset_device(), we take the pci_rescan_remove_lock immediately after
after we call eeh_reset_pe() to reset the PCI controller. We then call
eeh_clear_pe_frozen_state(), which can return an error. In this case, we
bail out of eeh_reset_device() without calling pci_unlock_rescan_remove().
Add a call to pci_unlock_rescan_remove() in the eeh_clear_pe_frozen_state()
error path so that we don't cause a deadlock later on.
Reported-by: Pradipta Ghosh <pradghos@in.ibm.com>
Fixes: 78954700631f ("powerpc/eeh: Avoid I/O access during PE reset")
Signed-off-by: Andrew Donnellan <andrew.donnellan@au1.ibm.com>
Acked-by: Russell Currey <ruscur@russell.cc>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Enable ESD feature for default truly command mode panel on sdm630.
Also increase the escape clock of both command and video mode panel
to avoid DSI PHY related errors seen during ESD enable use case.
Change-Id: Icc6064a9ad2b7aac2699f3161a3f7711933e55f8
Signed-off-by: Sandeep Panda <spanda@codeaurora.org>
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Currently, memshare allocates 5MB memory to diag client.
This patch increases the memory to 15MB. Also now diag
client will be considered guaranteed to avoid memory
allocation failure on modem SSRs.
Change-Id: I2ac822ef95ab7fbf054fdc80052b8406732f383e
Signed-off-by: Mohit Aggarwal <maggarwa@codeaurora.org>
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Add memory regions defined as starting address and size in
wlan module device node for APQ8998.
Change-Id: I76b790f2186d133984997acff5b3faed621f2116
Signed-off-by: Govind Singh <govinds@codeaurora.org>
Signed-off-by: Sarada Prasanna Garnayak <sgarna@codeaurora.org>
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Update correct bandwidth voting for JPEG and JPEGDMA modules,
based on JPEG clock(JPEG clock * 2.5).
CRs-Fixed: 2017755
Change-Id: Iae98f74fa885dc15f4d41c3e69639dd9cad99563
Signed-off-by: Krupal Divvela <kdivvela@codeaurora.org>
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Increase the common CMA region size to 44MB to accommodate modem diag
buffer region.
Change-Id: Iad83f749d8ca5635ead9c637dbc2f927191414fe
Signed-off-by: Charan Teja Reddy <charante@codeaurora.org>
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Enable the laser sensor on the msm8998.
CRs-fixed: 1051771
Change-Id: Ie929092504ceb40bff283817e98b6cb0c4c05714
Signed-off-by: Wei Ding <weiding@codeaurora.org>
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1. Change the power supply to fixed regulator of TOF sensor.
2. Add IRQ gpio for TOF sensor on msm8998.
3. Add TOF entry on msm8998 CDP device.
CRs-Fixed: 2013683
Change-Id: Id518d6f6d9a2c9d34bc054371e6d9be103c02021
Signed-off-by: Wei Ding <weiding@codeaurora.org>
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ESD feature is enabled on the nt35597 truly panel on sdm660 to
check the panel status periodically.
Change-Id: Id354c900a784b1bf239595fd31a244c064066987
Signed-off-by: Ashish Garg <ashigarg@codeaurora.org>
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