Merge tag 'arm64-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/cmarinas/linux-aarch64

Pull ARM64 updates from Catalin Marinas:

 - Generic execve, kernel_thread, fork/vfork/clone.

 - Preparatory patches for KVM support (initialising EL2 mode for later
   installing KVM support, hypervisor stub).

 - Signal handling corner case fix (alternative signal stack set up for
   a SEGV handler, which is raised in response to RLIMIT_STACK being
   reached).

 - Sub-nanosecond timer error fix.

* tag 'arm64-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/cmarinas/linux-aarch64: (30 commits)
  arm64: Update the MAINTAINERS entry
  arm64: compat for clock_adjtime(2) is miswired
  arm64: move FP-SIMD save/restore code to a macro
  arm64: hyp: initialize vttbr_el2 to zero
  arm64: add hypervisor stub
  arm64: record boot mode when entering the kernel
  arm64: move vector entry macro to assembler.h
  arm64: add AArch32 execution modes to ptrace.h
  arm64: expand register mapping between AArch32 and AArch64
  arm64: generic timer: use virtual counter instead of physical at EL0
  arm64: vdso: defer shifting of nanosecond component of timespec
  arm64: vdso: rework __do_get_tspec register allocation and return shift
  arm64: vdso: check sequence counter even for coarse realtime operations
  arm64: vdso: fix clocksource mask when extracting bottom 56 bits
  ARM64: Remove incorrect Kconfig symbol HAVE_SPARSE_IRQ
  Documentation: Fixes a word in Documentation/arm64/memory.txt
  arm64: Make !dirty ptes read-only
  arm64: Convert empty flush_cache_{mm,page} functions to static inline
  arm64: signal: let the compiler inline compat_get_sigframe
  arm64: signal: return struct rt_sigframe from get_sigframe
  ...

Conflicts:
	arch/arm64/include/asm/unistd32.h

1 files changed, 64 insertions, 0 deletions

diff --git a/arch/arm64/include/asm/fpsimdmacros.h b/arch/arm64/include/asm/fpsimdmacros.h
new file mode 100644
index 000000000000..bbec599c96bd
--- /dev/null
+++ b/arch/arm64/include/asm/fpsimdmacros.h
@@ -0,0 +1,64 @@
+/*
+ * FP/SIMD state saving and restoring macros
+ *
+ * Copyright (C) 2012 ARM Ltd.
+ * Author: Catalin Marinas <catalin.marinas@arm.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+.macro fpsimd_save state, tmpnr
+	stp	q0, q1, [\state, #16 * 0]
+	stp	q2, q3, [\state, #16 * 2]
+	stp	q4, q5, [\state, #16 * 4]
+	stp	q6, q7, [\state, #16 * 6]
+	stp	q8, q9, [\state, #16 * 8]
+	stp	q10, q11, [\state, #16 * 10]
+	stp	q12, q13, [\state, #16 * 12]
+	stp	q14, q15, [\state, #16 * 14]
+	stp	q16, q17, [\state, #16 * 16]
+	stp	q18, q19, [\state, #16 * 18]
+	stp	q20, q21, [\state, #16 * 20]
+	stp	q22, q23, [\state, #16 * 22]
+	stp	q24, q25, [\state, #16 * 24]
+	stp	q26, q27, [\state, #16 * 26]
+	stp	q28, q29, [\state, #16 * 28]
+	stp	q30, q31, [\state, #16 * 30]!
+	mrs	x\tmpnr, fpsr
+	str	w\tmpnr, [\state, #16 * 2]
+	mrs	x\tmpnr, fpcr
+	str	w\tmpnr, [\state, #16 * 2 + 4]
+.endm
+
+.macro fpsimd_restore state, tmpnr
+	ldp	q0, q1, [\state, #16 * 0]
+	ldp	q2, q3, [\state, #16 * 2]
+	ldp	q4, q5, [\state, #16 * 4]
+	ldp	q6, q7, [\state, #16 * 6]
+	ldp	q8, q9, [\state, #16 * 8]
+	ldp	q10, q11, [\state, #16 * 10]
+	ldp	q12, q13, [\state, #16 * 12]
+	ldp	q14, q15, [\state, #16 * 14]
+	ldp	q16, q17, [\state, #16 * 16]
+	ldp	q18, q19, [\state, #16 * 18]
+	ldp	q20, q21, [\state, #16 * 20]
+	ldp	q22, q23, [\state, #16 * 22]
+	ldp	q24, q25, [\state, #16 * 24]
+	ldp	q26, q27, [\state, #16 * 26]
+	ldp	q28, q29, [\state, #16 * 28]
+	ldp	q30, q31, [\state, #16 * 30]!
+	ldr	w\tmpnr, [\state, #16 * 2]
+	msr	fpsr, x\tmpnr
+	ldr	w\tmpnr, [\state, #16 * 2 + 4]
+	msr	fpcr, x\tmpnr
+.endm