xavi/android_kernel_m2note/arch/arm64/include/asm, branch o-8.1

ARM: 7933/1: rename ioremap_cached to ioremap_cache

2019-05-05T10:34:01+00:00

ioremap_cache is more aligned with other architectures. There are only 2 users of this in the kernel: pxa2xx-flash and Xen. This fixes Xen build failures on arm64: drivers/tty/hvc/hvc_xen.c:233:2: error: implicit declaration of function 'ioremap_cached' [-Werror=implicit-function-declaration] drivers/xen/grant-table.c:1174:3: error: implicit declaration of function 'ioremap_cached' [-Werror=implicit-function-declaration] drivers/xen/xenbus/xenbus_probe.c:778:4: error: implicit declaration of function 'ioremap_cached' [-Werror=implicit-function-declaration] Signed-off-by: Rob Herring Signed-off-by: Stefano Stabellini Signed-off-by: Russell King Git-repo: git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git Git-commit: 0a5ccc86507f45b80831dac1049197c4d45be955 [joonwoop@codeaurora.org: fixed trivial merge conflict.] Signed-off-by: Joonwoo Park Change-Id: I867b893aa63bc8647ed0d7cbf66b7fbb464ef8f0

arm64/xen: implement ioremap_cached on arm64

2019-05-05T10:34:01+00:00

Change-Id: I567349ba54959b45e817e8ebacbb8babca1ca453 Signed-off-by: Stefano Stabellini Git-Repo: git://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/ Git-commit: 22d4102f778df9cab47e871b8de3400f6e685378 Signed-off-by: Abhimanyu Kapur

arm64: move ET_DYN base lower in the address space

2018-05-16T13:01:27+00:00

Signed-off-by: Daniel Micay

arm64: determine stack entropy based on mmap entropy

2018-05-16T13:01:27+00:00

Stack mapping entropy is currently hard-wired to 11 bits of entropy on 32-bit and 18 bits of entropy on 64-bit. The stack itself gains an extra 8 bits of entropy from lower bit randomization within 16 byte alignment constraints. The argument block could have all lower bits randomized but it currently only gets the mapping randomization. Rather than hard-wiring values this switches to using the mmap entropy configuration like the mmap base and executable base, resulting in a range of 8 to 16 bits on 32-bit and 18 to 24 bits on 64-bit (with 4k pages) depending on kernel configuration and overridable via the sysctl entries. It's worth noting that since these kernel configuration options default to the minimum supported entropy value, the entropy on 32-bit will drop from 11 to 8 bits for builds using the defaults. However, following the configuration seems like the right thing to do regardless. At the very least, changing the defaults for COMPAT (32-bit processes on 64-bit) should be considered due to the larger address space compared to real 32-bit. Signed-off-by: Daniel Micay

BACKPORT: arm64: Add CNTFRQ_EL0 trap handler

2018-01-15T21:50:00+00:00

We now trap accesses to CNTVCT_EL0 when the counter is broken enough to require the kernel to mediate the access. But it turns out that some existing userspace (such as OpenMPI) do probe for the counter frequency, leading to an UNDEF exception as CNTVCT_EL0 and CNTFRQ_EL0 share the same control bit. The fix is to handle the exception the same way we do for CNTVCT_EL0. Bug: 68266545 Fixes: a86bd139f2ae ("arm64: arch_timer: Enable CNTVCT_EL0 trap if workaround is enabled") Reported-by: Hanjun Guo Tested-by: Hanjun Guo Reviewed-by: Hanjun Guo Signed-off-by: Marc Zyngier Signed-off-by: Catalin Marinas (cherry picked from commit 9842119a238bfb92cbab63258dabb54f0e7b111b) Change-Id: Ie5a9a93fcca238d6097ecacd6df0e540be90220b

BACKPORT: arm64: Add CNTVCT_EL0 trap handler

2018-01-15T21:49:56+00:00

Since people seem to make a point in breaking the userspace visible counter, we have no choice but to trap the access. Add the required handler. Bug: 68266545 Acked-by: Thomas Gleixner Acked-by: Mark Rutland Signed-off-by: Marc Zyngier (cherry picked from commit 6126ce0588eb5a0752d5c8b5796a7fca324fd887) Change-Id: I0705f47c85a78040df38df18f51a4a22500b904d

arm64: use the new *_relaxed macros for lower power usage

2017-12-25T15:47:53+00:00

Signed-off-by: franciscofranco Signed-off-by: Joe Maples Signed-off-by: Mister Oyster

ARM64: Wire up getrandom.

2017-12-23T22:34:21+00:00

Bug: http://b/29621447 Change-Id: I2e7623ae13318b91589d17d779391c4baa292421

UPSTREAM: arm64: compat: Remove leftover variable declaration

2017-12-14T16:04:49+00:00

(cherry picked from commit 82d24d114f249d919b918ff8eefde4117db8f088) Commit a1d5ebaf8ccd ("arm64: big-endian: don't treat code as data when copying sigret code") moved the 32-bit sigreturn trampoline code from the aarch32_sigret_code array to kuser32.S. The commit removed the array definition from signal32.c, but not its declaration in signal32.h. Remove the leftover declaration. Signed-off-by: Kevin Brodsky Signed-off-by: Mark Salyzyn Signed-off-by: Catalin Marinas Bug: 20045882 Bug: 63737556 Change-Id: Ic8a5f0e367f0ecd5c5ddd9e3885d0285f91cf89e Signed-off-by: Mister Oyster

arm64: zero the leading stack canary byte

2017-10-14T14:01:41+00:00