- 21 3月, 2013 6 次提交
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由 Javi Merino 提交于
When booting the kernel, the cpu logical id map must be initialised using device tree data passed by FW or through an embedded blob. This patch parses the reg property in device tree "cpu" nodes, retrieves the corresponding CPUs hardware identifiers (MPIDR) and initialises the cpu logical map accordingly. The device tree HW identifiers are considered valid if all CPU nodes contain a "reg" property, there are no duplicate "reg" entries and the DT defines a CPU node whose "reg" property defines affinity levels that matches those of the boot CPU. The primary CPU is assigned cpu logical number 0 to keep the current convention valid. Based on a0ae0240 (ARM: kernel: add device tree init map function). Signed-off-by: NJavi Merino <javi.merino@arm.com> Signed-off-by: NCatalin Marinas <catalin.marinas@arm.com>
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由 Javi Merino 提交于
Change the prototype of write_pen_release() accordingly and clarify that's holding the hardware id of the secondary that's going to boot. This is in preparation of getting HWIDs parsed from the DT. Signed-off-by: NJavi Merino <javi.merino@arm.com> Signed-off-by: NCatalin Marinas <catalin.marinas@arm.com>
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由 Catalin Marinas 提交于
This patch adds an arch_initcall() for the of_clk_init() clock initialisation. Signed-off-by: NCatalin Marinas <catalin.marinas@arm.com>
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由 Anup Patel 提交于
This patch adds support for using earlyprintk with 8250/16550 UART ports. The 8250/16550 UART can either have 8-bit or 32-bit aligned registers which is HW vendor dependent. Kernel args for 8-bit aligned regs: earlyprintk=uart8250-8bit,<phys_address> Kernel args for 32-bit aligned regs: earlyprintk=uart8250-32bit,<phys_address> Signed-off-by: NAnup Patel <anup.patel@linaro.org> Reviewed-by: NMarc Zyngier <marc.zyngier@arm.com> Signed-off-by: NCatalin Marinas <catalin.marinas@arm.com>
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由 Marc Zyngier 提交于
Enable early_printk to use the FastModel semihosting to output the early kernel messages. Works both for host and guest kernels. To use this feature, pass "early_printk=smh" to the kernel. Signed-off-by: NMarc Zyngier <marc.zyngier@arm.com> Signed-off-by: NCatalin Marinas <catalin.marinas@arm.com>
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由 Marc Zyngier 提交于
In order to preserve some kind of source compatibility between arm and arm64, introduce read_cpuid_{implementor,part_number,mpidr} which are used on KVM to find out which CPU we're running on. Signed-off-by: NMarc Zyngier <marc.zyngier@arm.com> Signed-off-by: NCatalin Marinas <catalin.marinas@arm.com>
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- 20 3月, 2013 1 次提交
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由 Paul Bolle 提交于
The Kconfig entry for DEBUG_ERRORS is a verbatim copy of the former arm entry for that symbol. It got removed in v2.6.39 because it wasn't actually used anywhere. There are still no users of DEBUG_ERRORS so remove this entry too. Signed-off-by: NPaul Bolle <pebolle@tiscali.nl> [catalin.marinas@arm.com: removed option from defconfig] Signed-off-by: NCatalin Marinas <catalin.marinas@arm.com>
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- 19 3月, 2013 1 次提交
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由 Paul Bolle 提交于
Config option GENERIC_HARDIRQS_NO_DEPRECATED was removed in commit 78c89825 ("genirq: Remove the now obsolete config options and select statements"), but the select was accidentally reintroduced in commit 8c2c3df3 ("arm64: Build infrastructure"). Signed-off-by: NPaul Bolle <pebolle@tiscali.nl> Signed-off-by: NCatalin Marinas <catalin.marinas@arm.com>
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- 18 3月, 2013 3 次提交
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由 Andreas Schwab 提交于
The expression to compute the padding needed to fill the uc_sigmask field to 1024 bits actually computes the padding needed for 1080 bits. Fortunately, due to the 16-byte alignment of the following field (uc_mcontext) the definition in glibc contains enough bytes of padding after uc_sigmask so that the overall offsets and size match in both definitions. Signed-off-by: NAndreas Schwab <schwab@suse.de> Signed-off-by: NCatalin Marinas <catalin.marinas@arm.com>
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由 Catalin Marinas 提交于
The __atomic_hash is only defined when SMP is enabled but the arm64ksyms.c exports it even for the UP case. Signed-off-by: NCatalin Marinas <catalin.marinas@arm.com>
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由 Catalin Marinas 提交于
Recent clean-up of the compat signal code left an unused 'stack' variable. Signed-off-by: NCatalin Marinas <catalin.marinas@arm.com>
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- 25 2月, 2013 1 次提交
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由 Al Viro 提交于
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
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- 24 2月, 2013 2 次提交
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由 Al Viro 提交于
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
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由 Tang Chen 提交于
Introduce a new API vmemmap_free() to free and remove vmemmap pagetables. Since pagetable implements are different, each architecture has to provide its own version of vmemmap_free(), just like vmemmap_populate(). Note: vmemmap_free() is not implemented for ia64, ppc, s390, and sparc. [mhocko@suse.cz: fix implicit declaration of remove_pagetable] Signed-off-by: NYasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com> Signed-off-by: NJianguo Wu <wujianguo@huawei.com> Signed-off-by: NWen Congyang <wency@cn.fujitsu.com> Signed-off-by: NTang Chen <tangchen@cn.fujitsu.com> Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Cc: Jiang Liu <jiang.liu@huawei.com> Cc: Kamezawa Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Cc: Lai Jiangshan <laijs@cn.fujitsu.com> Cc: Wu Jianguo <wujianguo@huawei.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: "H. Peter Anvin" <hpa@zytor.com> Signed-off-by: NMichal Hocko <mhocko@suse.cz> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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- 22 2月, 2013 1 次提交
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由 Arnd Bergmann 提交于
An architecture should not unconditionally enable 'GENERIC_GPIO' without providing an implementation. In case of arm64, selecting ARCH_WANT_OPTIONAL_GPIOLIB is the right solution, because it lets us enable GPIOLIB when configuring the kernel, and that implicitly turns on GENERIC_GPIO. Reported-by: NMark Rutland <mark.rutland@arm.com> Signed-off-by: NArnd Bergmann <arnd@arndb.de> Acked-by: NCatalin Marinas <catalin.marinas@arm.com> Acked-by: NLinus Walleij <linus.walleij@linaro.org> Signed-off-by: NGrant Likely <grant.likely@secretlab.ca>
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- 18 2月, 2013 1 次提交
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由 Len Brown 提交于
pm_idle() on arm64 was a synonym for default_idle(), so remove it and invoke default_idle() directly. Signed-off-by: NLen Brown <len.brown@intel.com> Acked-by: NCatalin Marinas <catalin.marinas@arm.com>
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- 14 2月, 2013 8 次提交
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由 Al Viro 提交于
__ARCH_WANT_SYS_RT_SIGACTION, __ARCH_WANT_SYS_RT_SIGSUSPEND, __ARCH_WANT_COMPAT_SYS_RT_SIGSUSPEND, __ARCH_WANT_COMPAT_SYS_SCHED_RR_GET_INTERVAL - not used anymore CONFIG_GENERIC_{SIGALTSTACK,COMPAT_RT_SIG{ACTION,QUEUEINFO,PENDING,PROCMASK}} - can be assumed always set.
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由 Al Viro 提交于
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
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由 Al Viro 提交于
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
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由 Al Viro 提交于
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
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由 Al Viro 提交于
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
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由 Al Viro 提交于
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
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由 Al Viro 提交于
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
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由 Al Viro 提交于
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
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- 12 2月, 2013 2 次提交
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由 Will Deacon 提交于
This patch is a port of 575320d6 ("ARM: 7445/1: mm: update CONTEXTIDR register to contain PID of current process") from ARM that introduces a new Kconfig option which, when enabled, causes the kernel to write the PID of the current task into the CONTEXTIDR register on context switch. This is useful when analysing hardware trace, since writes to this register can be configured to emit an event into the trace stream. Signed-off-by: NWill Deacon <will.deacon@arm.com> [catalin.marinas@arm.com: contextidr_thread_switch() moved to mmu_context.h] Signed-off-by: NCatalin Marinas <catalin.marinas@arm.com>
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由 Will Deacon 提交于
Our uses of inline asm constraints for atomic operations are fairly wild and varied. We basically need to guarantee the following: 1. Any instructions with barrier implications (load-acquire/store-release) have a "memory" clobber 2. When performing exclusive accesses, the addresing mode is generated using the "Q" constraint 3. Atomic blocks which use the condition flags, have a "cc" clobber This patch addresses these concerns which, as well as fixing the semantics of the code, stops GCC complaining about impossible asm constraints. Signed-off-by: NWill Deacon <will.deacon@arm.com> Signed-off-by: NCatalin Marinas <catalin.marinas@arm.com>
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- 11 2月, 2013 1 次提交
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由 Will Deacon 提交于
struct compat_ucontext * is a 64-bit pointer, so we need to use a compat_uptr_t instead to avoid declaring a structure incompatible with what AArch32 userspace expects. Cc: <stable@vger.kernel.org> Reported-by: NEdmund Grimley-Evans <Edmund.Grimley-Evans@arm.com> Signed-off-by: NWill Deacon <will.deacon@arm.com> Signed-off-by: NCatalin Marinas <catalin.marinas@arm.com>
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- 31 1月, 2013 2 次提交
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由 Mark Rutland 提交于
The arch_timer driver supports a superset of the functionality of the arm_generic driver, and is not tied to a particular arch. This patch moves arm64 to use the arch_timer driver, gaining additional functionality in doing so, and removes the (now unused) arm_generic driver. Timer-related hooks specific to arm64 are moved into arch/arm64/kernel/time.c. Signed-off-by: NMark Rutland <mark.rutland@arm.com> Acked-by: NCatalin Marinas <catalin.marinas@arm.com> Acked-by: NMarc Zyngier <marc.zyngier@arm.com> Acked-by: NSantosh Shilimkar <santosh.shilimkar@ti.com>
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由 Mark Rutland 提交于
Currently arch_counter_get_cnt{p,v}ct can be speculated, allowing for stale time values to be read. This could be problematic for the delay loop and other sensitive functions, as the time delta could jump around unexpectedly. This patch adds isbs to arch_counter_get_cnt{p,v}ct, preventing this possibility. Signed-off-by: NMark Rutland <mark.rutland@arm.com> Acked-by: NCatalin Marinas <catalin.marinas@arm.com>
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- 30 1月, 2013 7 次提交
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由 Catalin Marinas 提交于
The compiler generates framepointers by default anyway but this is to avoid a kbuild warning. Signed-off-by: NCatalin Marinas <catalin.marinas@arm.com>
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由 Catalin Marinas 提交于
Required for make allyesconfig. Signed-off-by: NCatalin Marinas <catalin.marinas@arm.com>
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由 Marc Zyngier 提交于
Wire the PSCI implementation into the SMP secondary startup code. Signed-off-by: NMarc Zyngier <marc.zyngier@arm.com> Signed-off-by: NCatalin Marinas <catalin.marinas@arm.com>
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由 Will Deacon 提交于
This patch adds support for the Power State Coordination Interface defined by ARM, allowing Linux to request CPU-centric power-management operations from firmware implementing the PSCI protocol. Signed-off-by: NWill Deacon <will.deacon@arm.com> [Marc: s/u32/u64/ in the relevant spots, and switch from an initcall to an simpler init function] Signed-off-by: NMarc Zyngier <marc.zyngier@arm.com> Signed-off-by: NCatalin Marinas <catalin.marinas@arm.com>
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由 Marc Zyngier 提交于
In order to introduce PSCI support, let the SMP code handle multiple enabling methods. This also allow CPUs to be booted using different methods (though this feels a bit weird...). In the process, move the spin-table code to its own file. Signed-off-by: NMarc Zyngier <marc.zyngier@arm.com> Signed-off-by: NCatalin Marinas <catalin.marinas@arm.com>
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由 Marc Zyngier 提交于
Add minimal guest support to perf, so it can distinguish whether the PMU interrupt was in the host or the guest, as well as collecting some very basic information (guest PC, user vs kernel mode). This is not feature complete though, as it doesn't support backtracing in the guest. Based on the x86 implementation, tested with KVM/arm64. Signed-off-by: NMarc Zyngier <marc.zyngier@arm.com> Signed-off-by: NCatalin Marinas <catalin.marinas@arm.com>
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由 Marc Zyngier 提交于
In order to mess with the processor state when running 32bit guests, define all the AArch32 PSR flags. Signed-off-by: NMarc Zyngier <marc.zyngier@arm.com> Signed-off-by: NCatalin Marinas <catalin.marinas@arm.com>
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- 23 1月, 2013 3 次提交
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由 Catalin Marinas 提交于
This patch adds support for "earlyprintk=" parameter on the kernel command line. The format is: earlyprintk=<name>[,<addr>][,<options>] where <name> is the name of the (UART) device, e.g. "pl011", <addr> is the I/O address. The <options> aren't currently used. The mapping of the earlyprintk device is done very early during kernel boot and there are restrictions on which functions it can call. A special early_io_map() function is added which creates the mapping from the pre-defined EARLY_IOBASE to the device I/O address passed via the kernel parameter. The pgd entry corresponding to EARLY_IOBASE is pre-populated in head.S during kernel boot. Only PL011 is currently supported and it is assumed that the interface is already initialised by the boot loader before the kernel is started. Signed-off-by: NCatalin Marinas <catalin.marinas@arm.com> Acked-by: NArnd Bergmann <arnd@arndb.de>
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由 Catalin Marinas 提交于
This patch add a device_initcall() to populate the platform devices (of_default_bus_match_table). This allows SoC implementations that do not require earlier initcalls to avoid any platform-specific code under arch/arm64. GIC and generic timer initialisation is done via FDT and CPU notifiers independently of the SoC code. Signed-off-by: NCatalin Marinas <catalin.marinas@arm.com> Acked-by: NArnd Bergmann <arnd@arndb.de>
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由 Will Deacon 提交于
The kernel's internal definition of ELF_NGREG uses struct pt_regs, which means that we disagree with userspace on the size of coredumps since glibc correctly uses the user-visible struct user_pt_regs. This patch fixes our ELF_NGREG definition to use struct user_pt_regs and introduces our own ELF_CORE_COPY_REGS to convert between the user and kernel structure definitions. Cc: <stable@vger.kernel.org> Signed-off-by: NWill Deacon <will.deacon@arm.com> Signed-off-by: NCatalin Marinas <catalin.marinas@arm.com>
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- 21 1月, 2013 1 次提交
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由 Rusty Russell 提交于
Fix up all callers as they were before, with make one change: an unsigned module taints the kernel, but doesn't turn off lockdep. Signed-off-by: NRusty Russell <rusty@rustcorp.com.au>
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