mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-10-05 08:26:59 +00:00
f4000cd997
- struct thread_info moved off-stack (also touching
include/linux/thread_info.h and include/linux/restart_block.h)
- cpus_have_cap() reworked to avoid __builtin_constant_p() for static
key use (also touching drivers/irqchip/irq-gic-v3.c)
- Uprobes support (currently only for native 64-bit tasks)
- Emulation of kernel Privileged Access Never (PAN) using TTBR0_EL1
switching to a reserved page table
- CPU capacity information passing via DT or sysfs (used by the
scheduler)
- Support for systems without FP/SIMD (IOW, kernel avoids touching these
registers; there is no soft-float ABI, nor kernel emulation for
AArch64 FP/SIMD)
- Handling of hardware watchpoint with unaligned addresses, varied
lengths and offsets from base
- Use of the page table contiguous hint for kernel mappings
- Hugetlb fixes for sizes involving the contiguous hint
- Remove unnecessary I-cache invalidation in flush_cache_range()
- CNTHCTL_EL2 access fix for CPUs with VHE support (ARMv8.1)
- Boot-time checks for writable+executable kernel mappings
- Simplify asm/opcodes.h and avoid including the 32-bit ARM counterpart
and make the arm64 kernel headers self-consistent (Xen headers patch
merged separately)
- Workaround for broken .inst support in certain binutils versions
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Merge tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Pull arm64 updates from Catalin Marinas:
- struct thread_info moved off-stack (also touching
include/linux/thread_info.h and include/linux/restart_block.h)
- cpus_have_cap() reworked to avoid __builtin_constant_p() for static
key use (also touching drivers/irqchip/irq-gic-v3.c)
- uprobes support (currently only for native 64-bit tasks)
- Emulation of kernel Privileged Access Never (PAN) using TTBR0_EL1
switching to a reserved page table
- CPU capacity information passing via DT or sysfs (used by the
scheduler)
- support for systems without FP/SIMD (IOW, kernel avoids touching
these registers; there is no soft-float ABI, nor kernel emulation for
AArch64 FP/SIMD)
- handling of hardware watchpoint with unaligned addresses, varied
lengths and offsets from base
- use of the page table contiguous hint for kernel mappings
- hugetlb fixes for sizes involving the contiguous hint
- remove unnecessary I-cache invalidation in flush_cache_range()
- CNTHCTL_EL2 access fix for CPUs with VHE support (ARMv8.1)
- boot-time checks for writable+executable kernel mappings
- simplify asm/opcodes.h and avoid including the 32-bit ARM counterpart
and make the arm64 kernel headers self-consistent (Xen headers patch
merged separately)
- Workaround for broken .inst support in certain binutils versions
* tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: (60 commits)
arm64: Disable PAN on uaccess_enable()
arm64: Work around broken .inst when defective gas is detected
arm64: Add detection code for broken .inst support in binutils
arm64: Remove reference to asm/opcodes.h
arm64: Get rid of asm/opcodes.h
arm64: smp: Prevent raw_smp_processor_id() recursion
arm64: head.S: Fix CNTHCTL_EL2 access on VHE system
arm64: Remove I-cache invalidation from flush_cache_range()
arm64: Enable HIBERNATION in defconfig
arm64: Enable CONFIG_ARM64_SW_TTBR0_PAN
arm64: xen: Enable user access before a privcmd hvc call
arm64: Handle faults caused by inadvertent user access with PAN enabled
arm64: Disable TTBR0_EL1 during normal kernel execution
arm64: Introduce uaccess_{disable,enable} functionality based on TTBR0_EL1
arm64: Factor out TTBR0_EL1 post-update workaround into a specific asm macro
arm64: Factor out PAN enabling/disabling into separate uaccess_* macros
arm64: Update the synchronous external abort fault description
selftests: arm64: add test for unaligned/inexact watchpoint handling
arm64: Allow hw watchpoint of length 3,5,6 and 7
arm64: hw_breakpoint: Handle inexact watchpoint addresses
...
91 lines
3.1 KiB
C
91 lines
3.1 KiB
C
/*
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* Copyright (C) 2012 ARM Ltd.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef __ASM_PERF_EVENT_H
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#define __ASM_PERF_EVENT_H
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#include <asm/stack_pointer.h>
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#define ARMV8_PMU_MAX_COUNTERS 32
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#define ARMV8_PMU_COUNTER_MASK (ARMV8_PMU_MAX_COUNTERS - 1)
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/*
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* Per-CPU PMCR: config reg
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*/
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#define ARMV8_PMU_PMCR_E (1 << 0) /* Enable all counters */
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#define ARMV8_PMU_PMCR_P (1 << 1) /* Reset all counters */
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#define ARMV8_PMU_PMCR_C (1 << 2) /* Cycle counter reset */
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#define ARMV8_PMU_PMCR_D (1 << 3) /* CCNT counts every 64th cpu cycle */
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#define ARMV8_PMU_PMCR_X (1 << 4) /* Export to ETM */
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#define ARMV8_PMU_PMCR_DP (1 << 5) /* Disable CCNT if non-invasive debug*/
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#define ARMV8_PMU_PMCR_LC (1 << 6) /* Overflow on 64 bit cycle counter */
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#define ARMV8_PMU_PMCR_N_SHIFT 11 /* Number of counters supported */
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#define ARMV8_PMU_PMCR_N_MASK 0x1f
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#define ARMV8_PMU_PMCR_MASK 0x7f /* Mask for writable bits */
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/*
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* PMOVSR: counters overflow flag status reg
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*/
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#define ARMV8_PMU_OVSR_MASK 0xffffffff /* Mask for writable bits */
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#define ARMV8_PMU_OVERFLOWED_MASK ARMV8_PMU_OVSR_MASK
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/*
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* PMXEVTYPER: Event selection reg
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*/
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#define ARMV8_PMU_EVTYPE_MASK 0xc800ffff /* Mask for writable bits */
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#define ARMV8_PMU_EVTYPE_EVENT 0xffff /* Mask for EVENT bits */
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/*
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* PMUv3 event types: required events
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*/
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#define ARMV8_PMUV3_PERFCTR_SW_INCR 0x00
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#define ARMV8_PMUV3_PERFCTR_L1D_CACHE_REFILL 0x03
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#define ARMV8_PMUV3_PERFCTR_L1D_CACHE 0x04
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#define ARMV8_PMUV3_PERFCTR_BR_MIS_PRED 0x10
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#define ARMV8_PMUV3_PERFCTR_CPU_CYCLES 0x11
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#define ARMV8_PMUV3_PERFCTR_BR_PRED 0x12
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/*
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* Event filters for PMUv3
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*/
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#define ARMV8_PMU_EXCLUDE_EL1 (1 << 31)
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#define ARMV8_PMU_EXCLUDE_EL0 (1 << 30)
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#define ARMV8_PMU_INCLUDE_EL2 (1 << 27)
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/*
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* PMUSERENR: user enable reg
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*/
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#define ARMV8_PMU_USERENR_MASK 0xf /* Mask for writable bits */
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#define ARMV8_PMU_USERENR_EN (1 << 0) /* PMU regs can be accessed at EL0 */
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#define ARMV8_PMU_USERENR_SW (1 << 1) /* PMSWINC can be written at EL0 */
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#define ARMV8_PMU_USERENR_CR (1 << 2) /* Cycle counter can be read at EL0 */
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#define ARMV8_PMU_USERENR_ER (1 << 3) /* Event counter can be read at EL0 */
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#ifdef CONFIG_PERF_EVENTS
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struct pt_regs;
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extern unsigned long perf_instruction_pointer(struct pt_regs *regs);
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extern unsigned long perf_misc_flags(struct pt_regs *regs);
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#define perf_misc_flags(regs) perf_misc_flags(regs)
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#endif
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#define perf_arch_fetch_caller_regs(regs, __ip) { \
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(regs)->pc = (__ip); \
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(regs)->regs[29] = (unsigned long) __builtin_frame_address(0); \
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(regs)->sp = current_stack_pointer; \
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(regs)->pstate = PSR_MODE_EL1h; \
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}
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#endif
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