- 06 Mar, 2005 3 commits
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bk://kernel.bkbits.net/davem/set_pte-2.6Linus Torvalds authored
into ppc970.osdl.org:/home/torvalds/v2.6/linux
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bk://kernel.bkbits.net/davem/sparc-2.6Linus Torvalds authored
into ppc970.osdl.org:/home/torvalds/v2.6/linux
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Daniel Jacobowitz authored
If a debugger set the TF bit, make sure to clear it when creating a signal context. Otherwise, TF will be incorrectly restored by sigreturn. Signed-off-by:
Daniel Jacobowitz <dan@debian.org> Signed-off-by:
Linus Torvalds <torvalds@osdl.org>
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- 05 Mar, 2005 37 commits
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David S. Miller authored
into picasso.davemloft.net:/home/davem/src/BK/set_pte-2.6
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David S. Miller authored
into northbeach.davemloft.net.davemloft.net:/home/davem/src/BK/sparc-2.6
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Linus Torvalds authored
This makes the resulting assembly not only easier to read, it results in roughly a 0.5% savings in code size. Fixes from Richard Henderson for the original broken asm constraints.
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bk://gkernel.bkbits.net/libata-2.6Linus Torvalds authored
into ppc970.osdl.org:/home/torvalds/v2.6/linux
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bk://gkernel.bkbits.net/net-drivers-2.6Linus Torvalds authored
into ppc970.osdl.org:/home/torvalds/v2.6/linux
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Jeff Garzik authored
into pobox.com:/garz/repo/net-drivers-2.6
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Jeff Garzik authored
into pobox.com:/garz/repo/net-drivers-2.6
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Jeff Garzik authored
into pobox.com:/garz/repo/net-drivers-2.6
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Jeff Garzik authored
into pobox.com:/garz/repo/net-drivers-2.6
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Jeff Garzik authored
into pobox.com:/garz/repo/net-drivers-2.6
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Yoichi Yuasa authored
This patch updates cmu.c to get the resource by standard method. Signed-off-by:
Yoichi Yuasa <yuasa@hh.iij4u.or.jp> Signed-off-by:
Andrew Morton <akpm@osdl.org> Signed-off-by:
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Yoichi Yuasa authored
This patch changes bcu.c to calculate clock at any time. Because clock can be changed. Moreover, EXPORT_SYMBOL_GPLs are added to it. Signed-off-by:
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Yoichi Yuasa authored
This patch adds GPIO/LED/DIPSW driver for TANBAC TB0219. Signed-off-by:
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Jake Moilanen authored
The offb code did not take into account a remapped pci address. Adding in the pci_mem_offset fixed a DSI in offb. Signed-off-by:
Jake Moilanen <moilanen@austin.ibm.com> Signed-off-by:
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Benjamin Herrenschmidt authored
This patch fixes a bug in the ppc64 zImage wrapper causing it to pass an incorrect size to flush_cache() when flushing the data and instruction caches prior to jumping to the kernel entry. This causes crashes on firmare environment that do strict MMU mapping only of actually allocated areas Signed-off-by:
Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by:
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Benjamin Herrenschmidt authored
(It's a real bug, but I suspect it doesn't trigger normally as we tend to allocate the initrd low, but it should be fixed anyway). This patch fixes an error in prom_init.c in the check for the initrd location vs. the memory allocation mecanism. Signed-off-by:
Arnd Bergmann <arndb@de.ibm.com> Signed-off-by:
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David Gibson authored
The PPC64 interrupt code includes a hook to call when an exception from the performance monitor unit occurs. However, there's no way of reserving the hook properly, so if more than one bit of code tries to use it things will get ugly. Currently oprofile is the only user, but there are likely to be more in future e.g. perfctr, if and when it reaches a fit state for merging. This patch creates functions to reserve and release the performance monitor hardware (including its interrupt), and makes oprofile use them. It also creates a new arch/ppc64/kernel/pmc.c, in which we can put any future helper functions for handling the performance monitor counters. Signed-off-by:
David Gibson <dwg@au1.ibm.com> Signed-off-by:
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Olaf Hering authored
make install passes the zImage to the installkernel script. When an initrd is used, this script has to pull out the vmlinux from the zImage because yaboot can not boot a zImage+initrd combo. It can only handle vmlinux+initrd or zImage.initrd. Its simple to just pass the plain vmlinux instead. Signed-off-by:
Olaf Hering <olh@suse.de> Signed-off-by:
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Olaf Hering authored
Hardware multithreading for RS64 cpus is currently broken. Anton sent me a patch a few weeks ago, but it did not work. So just hide the config option for the time being. Signed-off-by:
Paul Mackerras <paulus@samba.org> Signed-off-by:
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Andrew Morton authored
Fix a false-positive from the smp_processor_id() debugging code. Idle threads are per-cpu anwyay. Signed-off-by:
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Zwane Mwaikambo authored
Patch provides a generic hotplug cpu implementation, with the only current user being pmac. This doesn't replace real hotplug code as is currently used by LPAR systems. Ben i can add the additional pmac specific code to put the processor into a sleeping state seperately. Thanks to Nathan for testing. Signed-off-by:
Zwane Mwaikambo <zwane@arm.linux.org.uk> Signed-off-by:
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Andrew Morton authored
I cannot find a version of binutils which doesn't either do arch/ppc64/kernel/vdso32/gettimeofday.S: Assembler messages: arch/ppc64/kernel/vdso32/gettimeofday.S:33: Error: syntax error; found `@' but expected `,' or arch/ppc64/kernel/vdso32/gettimeofday.S: Assembler messages: arch/ppc64/kernel/vdso32/gettimeofday.S:33: Internal error, aborting at ../../gas/config/tc-ppc.c line 2658 in md_assemble Signed-off-by:
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Benjamin Herrenschmidt authored
This patch adds to the ppc64 kernel a virtual .so (vDSO) that is mapped into every process space, similar to the x86 vsyscall page. However, the implementation is very different (and doesn't use the gate area mecanism). Actually, it contains two implementations, a 32 bits and a 64 bits one. These vDSO's are currently mapped at 0x100000 (+1Mb) when possible (when a process load section isn't already there). In the future, we can randomize that address, or even imagine having a special phdr entry letting apps that wnat finer control over their address space to put it elsewhere (or not at all). The implementation adds a hook to binfmt_elf to let the architecture add a real VMA to the process space instead of using the gate area mecanism. This mecanism wasn't very suitable for ppc, we couldn't just "shove" PTE entries mapping kernel addresses into userland without expensive changes to our hash table management. Instead, I made the vDSO be a normal VMA which, additionally, means it supports copy-on-write semantics if made writable via ptrace/mprotect, thus allowing breakpoints in the vDSO code. The current implementation of the vDSOs contain the signal trampolines with appropriate DWARF informations, which enable us to use non-executable stacks (patches to come later) along with a few more functions that we hope glibc will soon make good use of (this is the "hard" part now :) Note that the symbols exposed by the vDSO aren't "normal" function symbols, apps can't be expected to link against them directly, the vDSO's are both seen as if they were linked at 0 and the symbols just contain offsets to the various functions. This is done on purpose to avoid a relocation step (ppc64 functions normally have descriptors with abs addresses in them). When glibc uses those functions, it's expected to use it's own trampolines that know how to reach them. In some cases, the vDSO contains several versions of a given function (for various CPUs), the kernel will "patch" the symbol table at boot to make it point to the appropriate one transparently. What is currently implemented is: - int __kernel_gettimeofday(struct timeval *tv, struct timezone *tz); This is a fully userland implementation of gettimeofday, with no barriers and no locks, and providing 100% equivalent results to the syscall version - void __kernel_sync_dicache(unsigned long start, unsigned long end) This function sync's the data and instruction caches (for making data executable), it is expected that userland loaders use this instead of doing it themselves, as the kernel will provide optimized versions for the current CPU. Currently, the vDSO procides a full one for all CPUs prior to POWER5 and a nop one for POWER5 which implements hardware snooping at the L1 level. In the future, an intermediate implementation may be done for the POWER4 and 970 which don't need the "dcbst" loop (the L1D cache is write-through on those). - void *__kernel_get_syscall_map(unsigned int *syscall_count); Returns a pointer to a map of implemented syscalls on the currently running kernel. The map is agnostic to the size of "long", unlike kernel bitops, it stores bits from top to bottom so that memory actually contains a linear bitmap check for syscall N by testing bit (0x80000000 >> (N & 0x1f)) of * 32 bits int at N >> 5. Note about backward compatibility issues: A bug in the ppc64 libgcc unwinder makes it unable to unwind stacks properly accross signals if the signal trampoline isn't on the stack. This has been fixed in CVS for gcc 4.0 and will be soon on the stable branch, but the problem exist will all currently used versions. That means that until glibc gets the patch to enable it's use of the vDSO symbols for the DWARF unwinder (rather trivial patch that will be pushed to glibc CVS soon hopefully), unwinding from a signal handler will not work for 64 bits applications. I consider this as a non-issue though as a patch is about to be produced, which can easily get pushed to "live" distros like debian, gentoo, fedora, etc... soon enough (it breaks compatilbity with kernels below 2.4.20 unfortunately as our signal stack layout changed, crap crap crap), as there are few 64 bits applications out there (expect gentoo), as it's only really an issue with C++ code relying on throwing exceptions out of signal handlers (extremely rare it seems), and as "release" distros like SLES or RHEL will probably have the vDSO enabled glibc _and_ the unwinder fix by the time they release a version with a 2.6.11 or 2.6.12 kernel anyway :) So far, I yet have to see an app failing because of that... Finally, many many many thanks to Alan Modra for writing the DWARF information of the signal handlers and debugging the libgcc issues ! Signed-off-by:
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Stephen Rothwell authored
This patch just moves as many as possible EXPORT_SYMBOL()s from arch/ppc64/kernel/ppc_ksyms.c to where the symbols are defined. This has been compiled on pSeries, iSeries and pmac. Signed-off-by:
Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by:
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Olaf Hering authored
Update several ppc64 defconfigs. Signed-off-by:
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Benjamin Herrenschmidt authored
The "systemcfg" data structure in the ppc64 kernel is something that used to be defined to be at a hard-coded page number in the kernel image. This is not necessary (at least not any more) and is a possible problem with future developements. This patch removes that constraint, which also simplifies various bits of assembly in head.S that were dealing with it. This is the first step of a deeper cleanup of systemcfg definition of usage (and ultimately removal in it's current incarnation). Signed-off-by:
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Paul Mackerras authored
POWER5 machines have a per-hardware-thread register which counts at a rate which is proportional to the percentage of cycles on which the cpu dispatches an instruction for this thread (if the thread gets all the dispatch cycles it counts at the same rate as the timebase register). This register is also context-switched by the hypervisor. Thus it gives a fine-grained measure of the actual cpu usage by the thread over time. This patch adds code to read this register every timer interrupt and on every context switch. The total over all virtual processors is available through the existing /proc/ppc64/lparcfg file, giving a way to measure the total cpu usage over the whole partition. Signed-off-by:
Manish Ahuja <ahuja@austin.ibm.com> Signed-off-by:
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Olaf Hering authored
The pseries nvram driver started probably as a copy of nvram.c. These includes are not needed to build it. Signed-off-by:
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Kumar Gala authored
Patch adds support for the initial PowerQUICC II Pro processors (MPC8343/E, MPC8347/E, and MPC8349/E) and the first reference platform (MPC834x SYS) from Freescale. The initial support is limited to existing drivers that overlap with the MPC85xx subarch (ethernet, I2C, uart). Signed-off-by:
Kumar Gala <kumar.gala@freescale.com> Signed-off-by:
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Kumar Gala authored
This patch fixes a trival bug in the CRITICAL_EXCEPTION macro Signed-off-by:
Takeharu KATO <kato.takeharu@jp.fujitsu.com> Signed-off-by:
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Kumar Gala authored
This patch makes the MPC8555 CDS system utilize the DS1553 RTC/NVRAM. Signed-off-by:
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Kumar Gala authored
This patch adds support for the Dallas 1553 RTC/NVRAM. Signed-off-by:
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Matt Porter authored
This patch adds support for OpenBios on Ebony, as Matt Porter has suggested. It will provide same functionality as the pibs extension for Luan and Ocotea. Signed-off-by:
Gerhard Jaeger <gjaeger@sysgo.com> Signed-off-by:
Matt Porter <mporter@kernel.crashing.org> Signed-off-by:
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Mark A. Greer authored
Add mv64x60 GPP IO pin/IRQ register definitions Signed-off-by:
James Chapman <jchapman@katalix.com> Signed-off-by:
Mark A. Greer <mgreer@mvista.com> Signed-off-by:
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Mark A. Greer authored
Add support for non-zero irq base to mv64360_pic code. - Fix mv64360 pic code to handle non-zero mv64x60_irq_base - Cleanup mv64360 entries in /proc/interrupts Signed-off-by:
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Kumar Gala authored
Removes explicit defines for SVR_85xx and use the information in the ppc_sys_specs table in platform code. Changed the ppc_sys_name strings to be a bit more generic so we have a bit more flexilibity when we display them. Signed-off-by:
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Kumar Gala authored
Fix whitespace in arch/ppc/platforms/85xx/mpc85xx_cds_common.c Signed-off-by:
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