- 16 Apr, 2005 40 commits
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Andi Kleen authored
Could lead to a lost reschedule event when the process already rescheduled on exception exit, and needs it again while still being in the kernel. Unlikely case though. Also remove one redundant cli in another entry.S path. Signed-off-by:
Andi Kleen <ak@suse.de> Signed-off-by:
Andrew Morton <akpm@osdl.org> Signed-off-by:
Linus Torvalds <torvalds@osdl.org>
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Andi Kleen authored
This fixes various issues in the return path for "paranoid" handlers (= running on a private exception stack that act like NMIs). Generalize previous hack to switch back to process stack for scheduling/signal handling purposes. Signed-off-by:
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Andi Kleen authored
This removes some unnecessary code in the assembly files. Matches i386 behaviour. In addition don't clear the work check mask after work has been done. This fixes some theoretical signal/other event losses. Signed-off-by:
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Andi Kleen authored
Minor microoptimization in syscall entry slow path Signed-off-by:
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Andi Kleen authored
Ported from i386/Linus Fix another TF corner case. Need to do the special TF handling for all signals to make debuggers happy Signed-off-by:
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Andi Kleen authored
Signed-off-by:
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Andi Kleen authored
To avoid some code duplication. Signed-off-by:
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Andi Kleen authored
Ported from i386/Linus Still won't handle other TF changing instructions like IRET or LAHF. Prefix handling must be double checked... Signed-off-by:
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Andi Kleen authored
Ported from i386/Linus Be more careful with TF handling to fix some copy protection codes in Wine Signed-off-by:
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Andi Kleen authored
Ported from i386 (originally from Linus) clean up ptrace single-stepping, make PT_DTRACE exact. (This makes the naming of "DTRACE" purely historical, since on x86 it now means "single step in progress"). Signed-off-by:
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Andi Kleen authored
This allows to use them on x86-64 Signed-off-by:
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Andi Kleen authored
Use a real VMA to map the 32bit vsyscall page This interacts better with Hugh's upcomming VMA walk optimization Also removes some ugly special cases. Code roughly modelled after the ppc64 vdso version from Ben Herrenschmidt. Signed-off-by:
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akpm@osdl.org authored
I had strange NMI watchdog timeouts running sysrq-T across 9600-baud serial. Signed-off-by:
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Jason Davis authored
x86_64 genapic mechanism should be aware of machines that use physical APIC mode regardless of how many clusters/processors are detected. ACPI 3.0 FADT makes this determination very simple by providing a feature flag "force_apic_physical_destination_mode" to state whether the machine unconditionally uses physical APIC mode. Unisys' next generation x86_64 ES7000 will need to utilize this FADT feature flag in order to boot the x86_64 kernel in the correct APIC mode. This patch has been tested on both x86_64 commodity and ES7000 boxes. Signed-off-by:
Jason Davis <jason.davis@unisys.com> Acked-by:
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Andi Kleen authored
Port over a i386 kludge from rusty to x86-64 I don't think it is a full solution, but the upcomming smp bootup rewrite will solve it. This fixes BUGs at bootup on bigger x86-64 systems. Signed-off-by:
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Andi Kleen authored
Use the correct file name in BUG() Signed-off-by:
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Andi Kleen authored
Only display physical id/siblings when there are siblings or dual core. In 2.6.11 I accidentially broke it and it was always displaying these fields But for compatibility to all these /proc parsers around it is better to do it in the old way again. Noticed by Suresh Siddha Cc: <Suresh.b.siddha@intel.com> Signed-off-by:
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Roland McGrath authored
Use the i386 PT_NOTE segment in x86_64 as well. Signed-off-by:
Roland McGrath <roland@redhat.com> Signed-off-by:
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Roland McGrath authored
This patch adds an ELF note to the vDSO giving the LINUX_VERSION_CODE value. Having this in the vDSO lets the dynamic linker avoid the `uname' syscall it now always does at startup to ascertain the kernel ABI available. Signed-off-by:
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Roland McGrath authored
This moves the macro loaddebug from asm-i386/suspend.h to asm-i386/processor.h, which is the place that makes sense for it to be defined, removes the extra copy of the same macro in arch/i386/kernel/process.c, and makes arch/i386/kernel/signal.c use the macro in place of its expansion. This is a purely cosmetic cleanup for the normal i386 kernel. However, it is handy for Xen to be able to just redefine the loaddebug macro once instead of also changing the signal.c code. Signed-off-by:
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Jason Gaston authored
This patch adds the Intel ESB2 DID's to the i2c-i801.c and Kconfig files for I2C support. Signed-off-by:
Jason Gaston <Jason.d.gaston@intel.com> Cc: Greg KH <greg@kroah.com> Signed-off-by:
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Jason Gaston authored
This patch adds the Intel ESB2 DID's to the ahci.c file for AHCI mode SATA support. Signed-off-by:
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Jason Gaston authored
This patch adds the Intel ESB2 DID's to the ata_piix.c and quirks.c file for IDE mode SATA support. Signed-off-by:
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Jason Gaston authored
This patch adds the Intel ESB2 DID's to the intel8x0.c file for AC'97 audio support. Signed-off-by:
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Jason Gaston authored
This patch adds the Intel ESB2 DID's to the piix.c file for IDE PATA support. Signed-off-by:
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Jason Gaston authored
This patch adds the Intel ESB2 DID's to the irq.c and pci_ids.h files. Signed-off-by:
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Yoichi Yuasa authored
This patch removes #include <linux/audit.h>. Because it includes it two times. Signed-off-by:
Yoichi Yuasa <yuasa@hh.iij4u.or.jp> Cc: Ralf Baechle <ralf@linux-mips.org> Signed-off-by:
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Yoichi Yuasa authored
This patch updates NEC VR4100 series CPU-PCI bridge support. Signed-off-by:
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Yoichi Yuasa authored
This patch had removed obsolete VR41xx RTC function from vr41xx.h . I forgot to put this change in "update VR41xx RTC support". Signed-off-by:
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Olof Johansson authored
For prefetches of NULL (as when walking a short linked list), PPC64 will in some cases take a performance hit. The hardware needs to do the TLB walk, and said walk will always miss, which means (up to) two L2 misses as penalty. This seems to hurt overall performance, so for NULL pointers skip the prefetch alltogether. Signed-off-by:
Olof Johansson <olof@austin.ibm.com> Signed-off-by:
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Anton Blanchard authored
During some code inspection using gcc 4.0 I noticed a stack frame was being created for a number of functions that didnt require it. For example: c0000000000df944 <._spin_unlock>: c0000000000df944: fb e1 ff f0 std r31,-16(r1) c0000000000df948: f8 21 ff c1 stdu r1,-64(r1) c0000000000df94c: 7c 3f 0b 78 mr r31,r1 c0000000000df950: 7c 20 04 ac lwsync c0000000000df954: e8 21 00 00 ld r1,0(r1) c0000000000df958: 38 00 00 00 li r0,0 c0000000000df95c: 90 03 00 00 stw r0,0(r3) c0000000000df960: eb e1 ff f0 ld r31,-16(r1) c0000000000df964: 4e 80 00 20 blr It turns out we are adding -fno-omit-frame-pointer to ppc64 which is causing the above behaviour. Removing that flag results in much better code: c0000000000d5b30 <._spin_unlock>: c0000000000d5b30: 7c 20 04 ac lwsync c0000000000d5b34: 38 00 00 00 li r0,0 c0000000000d5b38: 90 03 00 00 stw r0,0(r3) c0000000000d5b3c: 4e 80 00 20 blr We dont require a frame pointer to debug on ppc64, so remove it. Signed-off-by:
Anton Blanchard <anton@samba.org> Signed-off-by:
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Benjamin Herrenschmidt authored
The code that parses the OF device tree contains an old bogus hack which was killed a long time ago on ppc32, but survived in ppc64. It was supposed to help with a problem on the f50 which is ... a 32 bits machine :) Additionally, that hack is causing problems, so let's just get rid of it. Signed-off-by:
Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by:
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Benjamin Herrenschmidt authored
This patch adds detection of the Altivec capability of the CPU via the firmware in addition to the cpu table. This allows newer CPUs that aren't in the table to still have working altivec support in the kernel. It also fixes a problem where if a CPU isn't recognized as having altivec features, and takes an altivec unavailable exception due to userland issuing altivec instructions, the kernel would happily enable it and context switch the registers ... but not all of them (it would basically forget vrsave). With this patch, the kernel will refuse to enable altivec when the feature isn't detected for the CPU (SIGILL). Signed-off-by:
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Benjamin Herrenschmidt authored
This patch reworks the way the ppc64 is mapped in user memory by the kernel to make it more robust against possible collisions with executable segments. Instead of just whacking a VMA at 1Mb, I now use get_unmapped_area() with a hint, and I moved the mapping of the vDSO to after the mapping of the various ELF segments and of the interpreter, so that conflicts get caught properly (it still has to be before create_elf_tables since the later will fill the AT_SYSINFO_EHDR with the proper address). While I was at it, I also changed the 32 and 64 bits vDSO's to link at their "natural" address of 1Mb instead of 0. This is the address where they are normally mapped in absence of conflict. By doing so, it should be possible to properly prelink one it's been verified to work on glibc. Signed-off-by:
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Paul Mackerras authored
In arch/ppc64/kernel/ppc_ksyms.c, we are still exporting flush_icache_range, but that has been changed to be an inline in include/asm-ppc64/cacheflush.h which calls __flush_icache_range (defined in arch/ppc64/kernel/misc.S). This patch changes the export to __flush_icache_range, thus allowing modules to use the inline flush_icache_range. Signed-off-by:
Paul Mackerras <paulus@samba.org> Signed-off-by:
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Benjamin Herrenschmidt authored
This patch fixes ppc64 __ioremap() so that it stops adding implicitely _PAGE_GUARDED when the cache is not writeback, and instead, let the callers provide the flag they want here. This allows things like framebuffers to explicitely request a non-cacheable and non-guarded mapping which is more efficient for that type of memory without side effects. The patch also fixes all current callers to add _PAGE_GUARDED except btext, which is fine without it. Signed-off-by:
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Benjamin Herrenschmidt authored
This patch hacks the current PowerMac Alsa driver to add some basic support of analog sound output to some desktop G5s. It has severe limitations though: - Only 44100Khz 16 bits - Only work on G5 models using a TAS3004 analog code, that is early single CPU desktops and all dual CPU desktops at this date, but none of the more recent ones like iMac G5. - It does analog only, no digital/SPDIF support at all, no native AC3 support Better support would require a complete rewrite of the driver (which I am working on, but don't hold your breath), to properly support the diversity of apple sound HW setup, including dual codecs, several i2s busses, all the new codecs used in the new machines, proper clock switching with digital, etc etc etc... This patch applies on top of the other PowerMac sound patches I posted in the past couple of days (new powerbook support and sleep fixes). Note: This is a FAQ entry for PowerMac sound support with TI codecs: They have a feature called "DRC" which is automatically enabled for the internal speaker (at least when auto mute control is enabled) which will cause your sound to fade out to nothing after half a second of playback if you don't set a proper "DRC Range" in the mixer. So if you have a problem like that, check alsamixer and raise your DRC Range to something reasonable. Note2: This patch will also add auto-mute of the speaker when line-out jack is used on some earlier desktop G4s (and on the G5) in addition to the headphone jack. If that behaviour isn't what you want, just disable auto-muting and use the manual mute controls in alsamixer. Signed-off-by:
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Benjamin Herrenschmidt authored
This patch improves the behaviour of the "tumbler/snapper" driver used on newer PowerMacs during sleep. It properly set the HW mutes to shut down amplifiers and does an analog shutdown of the codec. That might improve power consumption during sleep on a number of machines. Signed-off-by:
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Benjamin Herrenschmidt authored
This patch hacks the current Alsa snd-powermac driver to add support for recent machine models with the tas3004 chip, that is basically new laptop models. The Mac Mini is _NOT_ yet supported by this patch (soon soon ...). The G5s (iMac or Desktop) will need the rewritten sound driver on which I'm working on (I _might_ get a hack for analog only on some G5s on the current driver, but no promise). Signed-off-by:
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Benjamin Herrenschmidt authored
This patch allows Kconfig to build the MV643xx ethernet driver on Pegasos (CONFIG_PPC_MULTIPLATFORM) and adds what I think is a missing fix from Dale's batch, that is remove SA_INTERRUPT and add SA_SHIRQ in there as the interrupt is shared if I understand things correctly. Signed-off-by:
Fabio Massimo Di Nitto <fabbione@ubuntu.com> Signed-off-by:
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