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* x86_64: x86_64 - Use non locked version for local_cmpxchg()Mathieu Desnoyers2007-07-22
| | | | | | | | | | local_cmpxchg() should not use any LOCK prefix. This change probably got lost in the move to cmpxchg.h. Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca> Acked-by: Christoph Lameter <clameter@sgi.com> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* i386: Do not include other cpus' interrupt 0 in nmi_watchdogKeith Owens2007-07-22
| | | | | | | | | | kstat_irqs(0) includes the count of interrupt 0 from all cpus, not just the current cpu. The updated interrupt 0 on other cpus can stop the nmi_watchdog from tripping, so only include the current cpu's int 0. Signed-off-by: Keith Owens <kaos@ocs.com.au> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* i386: Tune AMD Fam10h/11h like K8Andi Kleen2007-07-22
| | | | | | | This mainly changes the nops for alternative, so not very revolutionary. Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* x86_64: Set K8 CPUID flag for K8/Fam10h/Fam11hAndi Kleen2007-07-22
| | | | | | | | Previously this flag was only used on 32bit, but some shared code can use it now. Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* i386: Fix cpu_llc_id section mismatch warningAndi Kleen2007-07-22
| | | | | | | | | | Fix WARNING: arch/i386/kernel/built-in.o(.text+0xdd0d): Section mismatch: reference to .init.data:cpu_llc_id (between 'set_cpu_sibling_map' and 'initialize_secondary') WARNING: arch/i386/kernel/built-in.o(.text+0xdd1b): Section mismatch: reference to .init.data:cpu_llc_id (between 'set_cpu_sibling_map' and 'initialize_secondary') Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* x86: Stop MCEs and NMIs during code patchingAndi Kleen2007-07-22
| | | | | | | | | | | | | | When a machine check or NMI occurs while multiple byte code is patched the CPU could theoretically see an inconsistent instruction and crash. Prevent this by temporarily disabling MCEs and returning early in the NMI handler. Based on discussion with Mathieu Desnoyers. Cc: Mathieu Desnoyers <compudj@krystal.dyndns.org> Cc: Jeremy Fitzhardinge <jeremy@goop.org> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* x86: Fix alternatives and kprobes to remap write-protected kernel textAndi Kleen2007-07-22
| | | | | | | | | | | | | | | | | | | | | | | | | Reenable kprobes and alternative patching when the kernel text is write protected by DEBUG_RODATA Add a general utility function to change write protected text. The new function remaps the code using vmap to write it and takes care of CPU synchronization. It also does CLFLUSH to make icache recovery faster. There are some limitations on when the function can be used, see the comment. This is a newer version that also changes the paravirt_ops code. text_poke also supports multi byte patching now. Contains bug fixes from Zach Amsden and suggestions from Mathieu Desnoyers. Cc: Jan Beulich <jbeulich@novell.com> Cc: Jeremy Fitzhardinge <jeremy@goop.org> Cc: Mathieu Desnoyers <compudj@krystal.dyndns.org> Cc: Zach Amsden <zach@vmware.com> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* x86_64: Use read and write crX in .c filesGlauber de Oliveira Costa2007-07-22
| | | | | | | | | | | | | This patch uses the read and write functions provided at system.h for control registers instead of writting raw assembly over and over again in .c files. Functions to manipulate cr2 and cr8 were provided, as they were lacking. Also, removed some extra space after closing brackets Signed-off-by: Glauber de Oliveira Costa <gcosta@redhat.com> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* x86: i386-show-unhandled-signals-v3Masoud Asgharifard Sharbiani2007-07-22
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch makes the i386 behave the same way that x86_64 does when a segfault happens. A line gets printed to the kernel log so that tools that need to check for failures can behave more uniformly between debug.show_unhandled_signals sysctl variable to 0 (or by doing echo 0 > /proc/sys/debug/exception-trace) Also, all of the lines being printed are now using printk_ratelimit() to deny the ability of DoS from a local user with a program like the following: main() { while (1) if (!fork()) *(int *)0 = 0; } This new revision also includes the fix that Andrew did which got rid of new sysctl that was added to the system in earlier versions of this. Also, 'show-unhandled-signals' sysctl has been renamed back to the old 'exception-trace' to avoid breakage of people's scripts. AK: Enabling by default for i386 will be likely controversal, but let's see what happens AK: Really folks, before complaining just fix your segfaults AK: I bet this will find a lot of silent issues Signed-off-by: Masoud Sharbiani <masouds@google.com> Signed-off-by: Andi Kleen <ak@suse.de> [ Personally, I've found the complaints useful on x86-64, so I'm all for this. That said, I wonder if we could do it more prettily.. -Linus ] Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Fix ppc64 mismergeAl Viro2007-07-22
| | | | | | | | | | Fix a mismerge in commit 8b6f50ef1d5cc86b278eb42bc91630fad455fb10: "spufs: make signal-notification files readonly for NOSCHED contexts", where structs got duplicated. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Acked-by: Jeremy Kerr <jk@ozlabs.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Merge branch 'master' of ↵Linus Torvalds2007-07-21
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6 * 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6: [NET]: Add missing entries to family name tables [NET]: Make NETDEVICES depend on NET. [IPV6]: endianness bug in ip6_tunnel [IrDA]: TOSHIBA_FIR depends on virt_to_bus [IrDA]: EP7211 IR driver port to the latest SIR API [IrDA] Typo fix in irnetlink.c copyright [NET]: Fix loopback crashes when multiqueue is enabled. [IPV4]: Fix inetpeer gcc-4.2 warnings
| * [NET]: Add missing entries to family name tablesDavid Howells2007-07-21
| | | | | | | | | | | | | | Add missing entries to af_family_clock_key_strings[]. Signed-off-by: David Howells <dhowells@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * [NET]: Make NETDEVICES depend on NET.Jan Engelhardt2007-07-21
| | | | | | | | | | | | | | | | | | Enabling drivers from "Devices > Networking" (in menuconfig), for example SLIP and/or PLIP, throws link time errors when CONFIG_NET itself is =n. Have CONFIG_NETDEVICES depend on CONFIG_NET. Signed-off-by: Jan Engelhardt <jengelh@gmx.de> Signed-off-by: David S. Miller <davem@davemloft.net>
| * [IPV6]: endianness bug in ip6_tunnelAl Viro2007-07-21
| | | | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: David S. Miller <davem@davemloft.net>
| * [IrDA]: TOSHIBA_FIR depends on virt_to_busStephen Rothwell2007-07-21
| | | | | | | | | | | | | | Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Samuel Ortiz <samuel@sortiz.org> Signed-off-by: David S. Miller <davem@davemloft.net>
| * [IrDA]: EP7211 IR driver port to the latest SIR APISamuel Ortiz2007-07-21
| | | | | | | | | | | | | | The EP7211 SIR driver was the only one left without a new SIR API port. Signed-off-by: Samuel Ortiz <samuel@sortiz.org> Signed-off-by: David S. Miller <davem@davemloft.net>
| * [IrDA] Typo fix in irnetlink.c copyrightSamuel Ortiz2007-07-21
| | | | | | | | | | Signed-off-by: Samuel Ortiz <samuel@sortiz.org> Signed-off-by: David S. Miller <davem@davemloft.net>
| * [NET]: Fix loopback crashes when multiqueue is enabled.Patrick McHardy2007-07-20
| | | | | | | | | | | | | | From: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
| * [IPV4]: Fix inetpeer gcc-4.2 warningsPatrick McHardy2007-07-20
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | CC net/ipv4/inetpeer.o net/ipv4/inetpeer.c: In function 'unlink_from_pool': net/ipv4/inetpeer.c:297: warning: the address of 'stack' will always evaluate as 'true' net/ipv4/inetpeer.c:297: warning: the address of 'stack' will always evaluate as 'true' net/ipv4/inetpeer.c: In function 'inet_getpeer': net/ipv4/inetpeer.c:409: warning: the address of 'stack' will always evaluate as 'true' net/ipv4/inetpeer.c:409: warning: the address of 'stack' will always evaluate as 'true' "Fix" by checking for != NULL. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
* | Merge branch 'master' of ↵Linus Torvalds2007-07-21
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | master.kernel.org:/pub/scm/linux/kernel/git/davem/sparc-2.6 * 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/sparc-2.6: [SPARC64]: ERROR: "sys_ioctl" [arch/sparc64/solaris/solaris.ko] undefined! [SPARC32]: Make PAGE_SHARED a read-mostly variable. [SPARC32]: Take enable_irq/disable_irq out of line. [SPARC32]: clean include/asm-sparc/irq.h [SPARC32]: Fix rounding errors in ndelay/udelay implementation.
| * | [SPARC64]: ERROR: "sys_ioctl" [arch/sparc64/solaris/solaris.ko] undefined!Christoph Hellwig2007-07-21
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | From: Christoph Hellwig <hch@infradead.org> On Fri, Jul 20, 2007 at 09:24:42AM -0400, Horst H. von Brand wrote: > When building v2.6.22-3478-g275afca on sparc64 (.config attached) I get: > > MODPOST vmlinux > Building modules, stage 2. > MODPOST 463 modules > ERROR: "sys_ioctl" [arch/sparc64/solaris/solaris.ko] undefined! Sorry, my fault. It looked to me like sparc64 exports sys_ioctl on it's own, but it only exports compat_sys_ioctl on it's own. Signed-off-by: David S. Miller <davem@davemloft.net>
| * | [SPARC32]: Make PAGE_SHARED a read-mostly variable.Al Viro2007-07-21
| | | | | | | | | | | | | | | | | | | | | same scheme as for sparc64, same rationale Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | [SPARC32]: Take enable_irq/disable_irq out of line.Al Viro2007-07-21
| | | | | | | | | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | [SPARC32]: clean include/asm-sparc/irq.hAl Viro2007-07-21
| | | | | | | | | | | | | | | | | | | | | | | | | | | Move stuff used only by arch/sparc/kernel/* into arch/sparc/kernel/irq.h and into individual files in there (e.g. macros internal to sun4m_irq.c, etc.) Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | [SPARC32]: Fix rounding errors in ndelay/udelay implementation.Mark Fortescue2007-07-21
| |/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | __ndelay and __udelay have not been delayung >= specified time. The problem with __ndelay has been tacked down to the rounding of the multiplier constant. By changing this, delays > app 18us are correctly calculated. The problem with __udelay has also been tracked down to rounding issues. Changing the multiplier constant (to match that used in sparc64) corrects for large delays and adding in a rounding constant corrects for trunctaion errors in the claculations. Many short delays will return without looping. This is not an error as there is the fixed delay of doing all the maths to calculate the loop count. Signed-off-by: Mark Fortescue <mark@mtfhpc.demon.co.uk> Signed-off-by: David S. Miller <davem@davemloft.net>
* | x86-64: introduce struct pci_sysdata to facilitate sharing of ->sysdataMuli Ben-Yehuda2007-07-21
| | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch introduces struct pci_sysdata to x86 and x86-64, and converts the existing two users (NUMA, Calgary) to use it. This lays the groundwork for having other users of sysdata, such as the PCI domains work. The Calgary bits are tested, the NUMA bits just look ok. Signed-off-by: Jeff Garzik <jeff@garzik.org> Signed-off-by: Muli Ben-Yehuda <muli@il.ibm.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | x86_64: make k8topology multi-core awareJoachim Deguara2007-07-21
| | | | | | | | | | | | | | | | | | This makes k8topology multicore aware instead of limited to signle- and dual-core CPUs. It uses the CPUID to be more future proof. Signed-off-by: Joachim Deguara <joachim.deguara@amd.com> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | x86_64: remove __smp_alt* sectionsJan Beulich2007-07-21
| | | | | | | | | | | | | | | | | | Leftovers from the removal of the more general (but abandoned) SMP alternatives. Signed-off-by: Jan Beulich <jbeulich@novell.com> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | i386: Update alignment when 4K stacks are used.Robert P. J. Day2007-07-21
| | | | | | | | | | | | Signed-off-by: Robert P. J. Day <rpjday@mindspring.com> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | i386: remove old IRQ balancing debug cruftStefan Richter2007-07-21
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Dead or misnamed CONFIG_BALANCED_IRQ_DEBUG found by Robert P. J. Day. It's not a Kconfig variable. Since this debug code is ancient, I suggest to get rid of this misleading CONFIG_ macro by deleting all of this debug code. Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de> Cc: Ingo Molnar <mingo@elte.hu> Cc: "Robert P. J. Day" <rpjday@mindspring.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | i386: insert HPET firmware resource after PCI enumeration has completedAaron Durbin2007-07-21
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Insert HPET resources after pci probing has been completed in order to avoid resource conflicts with PCI resource reservation. With this change the HPET firmware resources will be identified, but it should also not cause issues when the HPET address falls on a BAR in a PCI device, and the PCI enumeration cannot reserve the resources. Signed-off-by: Aaron Durbin <adurbin@google.com> Cc: john stultz <johnstul@us.ibm.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Len Brown <lenb@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | i386: basic infrastructure support for AMD geode-class machinesAndres Salomon2007-07-21
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This builds upon the existing geode infrastructure, but adds southbridge support, some GPIO functions, and a header file (asm-i386/geode.h) with some useful GX/LX detection tests. The majority of this code was written by Jordan Crouse. Signed-off-by: Jordan Crouse <jordan.crouse@amd.com> Signed-off-by: Andres Salomon <dilinger@debian.org> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Cc: David Brownell <david-b@pacbell.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | x86_64: arch/x86_64/kernel/e820.c lower printk severityDan Aloni2007-07-21
| | | | | | | | | | | | | | Signed-off-by: Dan Aloni <da-x@monatomic.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | x86_64: arch/x86_64/kernel/aperture.c lower printk severityDan Aloni2007-07-21
| | | | | | | | | | | | | | | | | | | | Users that use kernel log filtering (e.g. via syslogd or a proprietry method) wouldn't like to see warning prints that are not really warnings. Signed-off-by: Dan Aloni <da-x@monatomic.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | i386: fix iounmap's use of vm_struct's size fieldJeremy Fitzhardinge2007-07-21
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | get_vm_area always returns an area with an adjacent guard page. That guard page is included in vm_struct.size. iounmap uses vm_struct.size to determine how much address space needs to have change_page_attr applied to it, which will BUG if applied to the guard page. This patch adds a helper function - get_vm_area_size() in linux/vmalloc.h - to return the actual size of a vm area, and uses it to make iounmap do the right thing. There are probably other places which should be using get_vm_area_size(). Thanks to Dave Young <hidave.darkstar@gmail.com> for debugging the problem. [ Andi, it wasn't clear to me whether x86_64 needs the same fix. ] Signed-off-by: Jeremy Fitzhardinge <jeremy@xensource.com> Cc: Dave Young <hidave.darkstar@gmail.com> Cc: Chuck Ebbert <cebbert@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | i386: move PIT function declarations and constants to correct header fileThomas Gleixner2007-07-21
| | | | | | | | | | | | | | | | | | | | | | | | | | | | setup_pit_timer is declared in asm-i386/timer.h. Move it to the pit header file, so it can be used by x86_64 as well. Move also the PIT constants. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@elte.hu> Cc: john stultz <johnstul@us.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | i386: hpet assumes boot cpu is 0Chris Wright2007-07-21
| | | | | | | | | | | | | | | | | | | | | | | | | | I fixed this in x86_64. Looks like the kind of thing that will break voyager on i386. Signed-off-by: Chris Wright <chrisw@sous-sol.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@elte.hu> Cc: john stultz <johnstul@us.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | i386: remove volatile in apic.cThomas Gleixner2007-07-21
| | | | | | | | | | | | | | | | | | | | | | Remove the volatile in apic. We have a cpu_relax() in the wait loop. Fix a coding style issue while at it. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@elte.hu> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | x86_64: move iommu declaration from proto to iommu.hYinghai Lu2007-07-21
| | | | | | | | | | | | | | | | | | | | | | | | | | [akpm@linux-foundation.org: build fix] Signed-off-by: Yinghai Lu <yinghai.lu@sun.com> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Cc: "Eric W. Biederman" <ebiederm@xmission.com> Cc: Muli Ben-Yehuda <muli@il.ibm.com> Cc: Vivek Goyal <vgoyal@in.ibm.com> Cc: Dave Jones <davej@codemonkey.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | x86_64: disable srat when numa emulation succeedsDavid Rientjes2007-07-21
| | | | | | | | | | | | | | | | | | | | | | | | | | | | When NUMA emulation succeeds, acpi_numa needs to be set to -1 so that srat_disabled() will always return true. We won't be calling acpi_scan_nodes() or registering the true nodes we've found. [hugh@veritas.com: Fix x86_64 CONFIG_NUMA_EMU build: acpi_numa needs CONFIG_ACPI_NUMA] Signed-off-by: David Rientjes <rientjes@google.com> Cc: Len Brown <lenb@kernel.org> Signed-off-by: Hugh Dickins <hugh@veritas.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | x86_64: fix e820_hole_size based on address rangesDavid Rientjes2007-07-21
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | e820_hole_size() now uses the newly extracted helper function, e820_find_active_region(), to determine the size of usable RAM in a range of PFN's. This was previously broken because of two reasons: - The start and end PFN's of each e820 entry were not properly rounded prior to excluding those entries in the range, and - Entries smaller than a page were not properly excluded from being accumulated. This resulted in emulated nodes being incorrectly mapped to ranges that were completely reserved and not candidates for being registered as active ranges. Signed-off-by: David Rientjes <rientjes@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | x86_64: disable the GART in shutdownYinghai Lu2007-07-21
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | For K8 system: 4G RAM with memory hole remapping enabled, or more than 4G RAM installed. when using kexec to load second kernel. In the second kernel, when mem is allocated for GART, it will do the memset for clear, it will cause restart, because some device still used that for dma. solution will be: in second kernel: disable that at first before we try to allocate mem for it. or in the first kernel: do disable that before shutdown. Andi/Eric/Alan prefer to second one for clean shutdown in first kernel. Andi also point out need to consider to AGP enable but mem less 4G case too. Signed-off-by: Yinghai Lu <yinghai.lu@sun.com> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Cc: "Eric W. Biederman" <ebiederm@xmission.com> Cc: Muli Ben-Yehuda <muli@il.ibm.com> Cc: Vivek Goyal <vgoyal@in.ibm.com> Cc: Dave Jones <davej@codemonkey.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | i386: replace hard-coded constant with appropriate macro from kernel.hRobert P. J. Day2007-07-21
| | | | | | | | | | | | | | Signed-off-by: Robert P. J. Day <rpjday@mindspring.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | i386: add cpu_relax() to cmos_lock()Andreas Mohr2007-07-21
| | | | | | | | | | | | | | | | | | | | | | | | | | Add cpu_relax() to cmos_lock() inline function for faster operation on SMT CPUs and less power consumption on others in case of lock contention (which probably doesn't happen too often, so admittedly this patch is not too exciting). [akpm@linux-foundation.org: Include the header file for cpu_relax()] Signed-off-by: Andreas Mohr <andi@lisas.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | x86_64: flush_tlb_kernel_range() warning fixAndrew Morton2007-07-21
| | | | | | | | | | | | | | | | | | | | | | mm/vmalloc.c: In function 'unmap_kernel_range': mm/vmalloc.c:75: warning: unused variable 'start' make it a C function so that the compiler thinks it used its arguments. Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | x86_64: change _map_single to static in pci_gart.c etcYinghai Lu2007-07-21
| | | | | | | | | | | | | | | | | | This function is called via dma_ops->.., so change it to static Signed-off-by: Yinghai Lu <yinghai.lu@sun.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | x86_64: Geode HW Random Number Generator depends on X86_32Yinghai Lu2007-07-21
| | | | | | | | | | | | | | | | Signed-off-by: Yinghai Lu <yinghai.lu@sun.com> Acked-by: Alan Cox <alan@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | x86_64: fix wrong comment regarding set_fixmap()Jiri Kosina2007-07-21
| | | | | | | | | | | | | | | | | | | | | | The function name is set_fixmap(), not fixmap_set() as stated in the comment. Also fix a typo, punctuation and lower/uppercase a bit. Signed-off-by: Jiri Kosina <jkosina@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | x86_64: lower printk severityDan Aloni2007-07-21
| | | | | | | | | | | | | | Signed-off-by: Dan Aloni <da-x@monatomic.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | x86_64: fix typo in acpi_pm.cAlessio Igor Bogani2007-07-21
| | | | | | | | | | | | | | | | Signed-off-by: Alessio Igor Bogani <abogani@texware.it> Cc: john stultz <johnstul@us.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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