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2008-07-09x86: build fix for "x86: fix C1E && nx6325 stability problem"Ingo Molnar
fix: arch/x86/kernel/acpi/boot.c: In function ‘dmi_ignore_irq0_timer_override’: arch/x86/kernel/acpi/boot.c:1443: error: implicit declaration of function ‘force_mask_ioapic_irq_2’ Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-09x86: fix C1E && nx6325 stability problemRafael J. Wysocki
The problems are that, with the ACPI vs timer overring issue _fixed_, after using the box for some time (between several seconds and 1 hour, at random) processes get very high CPU loads (once I've got X using 107% of the CPU, for example) and the system becomes unresponsive, as though there were interrupts lost or something similar. Andreas Herrman reproduced similar problems: > Ok, now I've reproduced the stability problem. > - Using tip/master, > - reverting e38502eb8aa82314d5ab0eba45f50e6790dadd88 and > - applying your patch from this posting > http://marc.info/?l=linux-kernel&m=121539354224562&w=4 > > Starting X, firefox, gimp, tuxpaint and doing some drawing in tuxpaint > results in a slow system. Drawing is almost not possible anymore -- > Selections of new colors, cursors etc. is performed with huge delay > if it's performed at all. > > BTW, the code sets up timer IRQ as Virtual Wire IRQ: > > Jul 8 14:57:58 kodscha IO-APIC (apicid-pin) 2-22, 2-23 not connected. > Jul 8 14:57:58 kodscha ..TIMER: vector=0x30 apic1=0 pin1=2 apic2=-1 pin2=-1 > Jul 8 14:57:58 kodscha ...trying to set up timer as Virtual Wire IRQ... works. > > and both INT0 and INT2 of IOAPIC are masked: > > Jul 8 14:57:58 kodscha NR Dst Mask Trig IRR Pol Stat Dmod Deli Vect: > Jul 8 14:57:58 kodscha 00 000 1 0 0 0 0 0 0 00 > Jul 8 14:57:58 kodscha 01 003 0 0 0 0 0 1 1 31 > Jul 8 14:57:58 kodscha 02 003 1 0 0 0 0 0 0 30 > > I've also seen strange CPU utilization -- with syslog-ng: > > top - 15:33:06 up 35 min, 4 users, load average: 1.70, 0.68, 0.37 > Tasks: 64 total, 4 running, 60 sleeping, 0 stopped, 0 zombie > Cpu0 : 0.0%us,100.0%sy, 0.0%ni, 0.0%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st > Cpu1 : 6.4%us, 87.2%sy, 0.0%ni, 5.8%id, 0.0%wa, 0.6%hi, 0.0%si, 0.0%st > Mem: 895384k total, 283568k used, 611816k free, 35492k buffers > Swap: 1959920k total, 0k used, 1959920k free, 163044k cached > > PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND > 4632 root 20 0 17216 800 580 S 104 0.1 0:34.22 syslog-ng > 28505 root 20 0 205m 11m 4024 S 6 1.3 0:21.16 X > 28518 root 20 0 56292 5652 4492 S 1 0.6 0:01.80 fluxbox > 1 root 20 0 3724 608 508 S 0 0.1 0:00.36 init > > So far I have no clue why C1E-idle in conjunction with virtual wire > mode causes this strange behaviour. > > ... and I start to think about the root cause of all this. > > I've performed similar tests under X with the IRQ0/INT0 configuration and > I did not see above symptoms. So lets fall back to the IRQ0/INT0 configuration on this box. This basically restores the dont-use-the-lapic-timer exception mechanism that was unconditional on this box prior commit 8750bf5 ("x86: add C1E aware idle function"). Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-09x86: make max_pfn cover acpi table below 4gYinghai Lu
When system have 4g less ram installed, and acpi table sit near end of ram, make max_pfn cover them too, so 64bit kernel don't need to mess up fixmap. Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com> Cc: "Suresh Siddha" <suresh.b.siddha@intel.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-09arch/x86/kernel/smpboot.c: fix warningAndrew Morton
arch/x86/kernel/smpboot.c: In function 'do_boot_cpu': arch/x86/kernel/smpboot.c:943: warning: label 'restore_state' defined but not used Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-09x86: traps_xx: various small changesAlexander van Heukelum
- order of local variable declarations - minor code changes Signed-off-by: Alexander van Heukelum <heukelum@fastmail.fm> Acked-by: Cyrill Gorcunov <gorcunov@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-09x86: traps_xx: modify default_do_nmiAlexander van Heukelum
- local caching of smp_processor_id() in default_do_nmi() - v2: do not split default_do_nmi over two lines On Wed, Jul 02, 2008 at 08:12:20PM +0400, Cyrill Gorcunov wrote: > | -static notrace __kprobes void default_do_nmi(struct pt_regs *regs) > | +static notrace __kprobes void > | +default_do_nmi(struct pt_regs *regs) > | [ ... ] > | -asmlinkage notrace __kprobes void default_do_nmi(struct pt_regs *regs) > | +asmlinkage notrace __kprobes void > | +default_do_nmi(struct pt_regs *regs) > > Hi Alexander, good done, thanks! But why did you split default_do_nmi > definition by two lines? I think it would be better to keep them as it > was before, ie by a single line > > static notrace __kprobes void default_do_nmi(struct pt_regs *regs) Thanks! Here is the replacement patch with default_do_nmi left on a single line. Signed-off-by: Alexander van Heukelum <heukelum@fastmail.fm> Acked-by: Cyrill Gorcunov <gorcunov@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-09x86: traps_xx: restructure do_general_protection()Alexander van Heukelum
- if (cond) block -> if (!cond) goto end_of_block - local caching of current Signed-off-by: Alexander van Heukelum <heukelum@fastmail.fm> Acked-by: Cyrill Gorcunov <gorcunov@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-09x86: traps_xx: modify do_trapAlexander van Heukelum
if (cond) block -> if (!cond) goto end_of_block Signed-off-by: Alexander van Heukelum <heukelum@fastmail.fm> Acked-by: Cyrill Gorcunov <gorcunov@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-09x86: traps_xx: modify __dieAlexander van Heukelum
if (cond) block -> if (!cond) goto end_of_block Signed-off-by: Alexander van Heukelum <heukelum@fastmail.fm> Acked-by: Cyrill Gorcunov <gorcunov@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-09x86: traps_xx: shuffle headers and globalsAlexander van Heukelum
Reorder headers and collect globals in traps_32.c and traps_64.c Code size and data size are unaffected by the changes. Code itself is changed due to different ordering of data and bss. The bss segment changed size due to a change in the packing of the variables. Signed-off-by: Alexander van Heukelum <heukelum@fastmail.fm> Acked-by: Cyrill Gorcunov <gorcunov@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-09x86: initial changes to unify traps_32.c and traps_64.cAlexander van Heukelum
This patch does not change the generated object files. Signed-off-by: Alexander van Heukelum <heukelum@fastmail.fm> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-09x86: rename paravirtualized TSC functionsAlok Kataria
Rename the paravirtualized calculate_cpu_khz to calibrate_tsc. In all cases, we actually calibrate_tsc and use that as the cpu_khz value. Signed-off-by: Alok N Kataria <akataria@vmware.com> Signed-off-by: Dan Hecht <dhecht@vmware.com> Cc: Dan Hecht <dhecht@vmware.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-09x86: merge tsc_init and clocksource codeAlok Kataria
Unify the clocksource code. Unify the tsc_init code. Signed-off-by: Alok N Kataria <akataria@vmware.com> Signed-off-by: Dan Hecht <dhecht@vmware.com> Cc: Dan Hecht <dhecht@vmware.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-09x86: merge the TSC cpu-freq codeAlok Kataria
Unify the TSC cpufreq code. Signed-off-by: Alok N Kataria <akataria@vmware.com> Signed-off-by: Dan Hecht <dhecht@vmware.com> Cc: Dan Hecht <dhecht@vmware.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-09x86: merge tsc calibrationAlok Kataria
Merge the tsc calibration code for the 32bit and 64bit kernel. The paravirtualized calculate_cpu_khz for 64bit now points to the correct tsc_calibrate code as in 32bit. Original native_calculate_cpu_khz for 64 bit is now called as calibrate_cpu. Also moved the recalibrate_cpu_khz function in the common file. Note that this function is called only from powernow K7 cpu freq driver. Signed-off-by: Alok N Kataria <akataria@vmware.com> Signed-off-by: Dan Hecht <dhecht@vmware.com> Cc: Dan Hecht <dhecht@vmware.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-09x86: merge sched_clock handlingAlok Kataria
Move the basic global variable definitions and sched_clock handling in the common "tsc.c" file. - Unify notsc kernel command line handling for 32 bit and 64bit. - Functional changes for 64bit. - "tsc_disabled" is updated if "notsc" is passed at boottime. - Fallback to jiffies for sched_clock, incase notsc is passed on commandline. Signed-off-by: Alok N Kataria <akataria@vmware.com> Signed-off-by: Dan Hecht <dhecht@vmware.com> Cc: Dan Hecht <dhecht@vmware.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-09x86: apic_32.c - add lapic resourceCyrill Gorcunov
Add lapic resource into kernel resource map and mark it as busy Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com> Cc: "Maciej W. Rozycki" <macro@linux-mips.org> Signed-off-by: Ingo Molnar <mingo@elte.hu> CC: Maciej W. Rozycki <macro@linux-mips.org>
2008-07-09x86: map UV chipset space - UV supportJack Steiner
Create page table entries to map the SGI UV chipset GRU. local MMR & global MMR ranges. Signed-off-by: Jack Steiner <steiner@sgi.com> Cc: linux-mm@kvack.org Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-09x86: let early_reserve_e820 update e820_saved tooYinghai Lu
so when it is called after early_param, e820_saved get updated too. esp for mpc update. Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com> Cc: Bernhard Walle <bwalle@suse.de> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-09x86: make e820_saved have update from setup_dataYinghai Lu
seperate reserve_setup_data into e820_reserved_setup_data, and reserve_early_setup_data. So could use e820_reserved_setup_data to backup e820 with setup_data. Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com> Cc: Bernhard Walle <bwalle@suse.de> Cc: Ying Huang <ying.huang@intel.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-09x86: move saving e820_saved to setup_memory_mapYinghai Lu
so other path that will override memory_setup or machine_specific_memory_setup could have e820_saved too. Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com> Cc: Jeremy Fitzhardinge <jeremy@goop.org> Cc: Bernhard Walle <bwalle@suse.de> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-08x86: use FIRMWARE_MEMMAP on x86/E820Bernhard Walle
This patch uses the /sys/firmware/memmap interface provided in the last patch on the x86 architecture when E820 is used. The patch copies the E820 memory map very early, and registers the E820 map afterwards via firmware_map_add_early(). Signed-off-by: Bernhard Walle <bwalle@suse.de> Acked-by: Greg KH <gregkh@suse.de> Acked-by: Vivek Goyal <vgoyal@redhat.com> Cc: kexec@lists.infradead.org Cc: yhlu.kernel@gmail.com Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-08x86: remove acpi_srat config v2Yinghai Lu
use ACPI_NUMA directly and move srat_32.c to mm/ Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-08x86: always set _PAGE_GLOBAL in _PAGE_KERNEL* flagsJeremy Fitzhardinge
Consistently set _PAGE_GLOBAL in _PAGE_KERNEL flags. This makes 32- and 64-bit code consistent, and removes some special cases where __PAGE_KERNEL* did not have _PAGE_GLOBAL set, causing confusion as a result of the inconsistencies. This patch only affects x86-64, which generally always supports PGD. The x86-32 patch is next. Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Cc: Stephen Tweedie <sct@redhat.com> Cc: Eduardo Habkost <ehabkost@redhat.com> Cc: Mark McLoughlin <markmc@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-08x86: fix "x86: let setup_arch call init_apic_mappings for 32bit"Ingo Molnar
add back this line lost from trap_init(): set_trap_gate(0, &divide_error); Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-08x86: move prefill_possible_map calling earlyYinghai Lu
call it right after we are done with MADT/mptable handling, instead of doing that in setup_per_cpu_areas() later on... this way for_possible_cpu() can be used early. Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-08x86: move init_cpu_to_node after get_smp_configYinghai Lu
when acpi=off, cpu_to_apicid is ready after get_smp_config so need to move init_cpu_to_node after it. otherwise, we will get wrong cpu->node mapping, and it will rely on amd_detect_cmp() to correct it - but that is too late as setup_per_cpu_data is already called before that so we will get per_cpu_data on the wrong node. Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-08x86: merge zones_sizes_init for numa and non numa on 32-bitYinghai Lu
move out e820_register_active_regions from non numa zones_sizes_init() and remove numa version zones_sizes_init(). and let 32 bit call remove_all_active_ranges() in setup_arch() directly like 64-bit Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-08x86: do not printout if we do not find setup_dataYinghai Lu
Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-08x86: make early_res_to_bootmem print out less 80 width charsYinghai Lu
Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-08x86: change copy_e820_map to append_e820_mapYinghai Lu
so it has a more meaningful name. also change it to static. Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-08x86: find offset for crashkernel reservation automaticallyBernhard Walle
This patch removes the need of the crashkernel=...@offset parameter to define a fixed offset for crashkernel reservation. That feature can be used together with a relocatable kernel where the kexec-tools relocate the kernel and get the actual offset from /proc/iomem. The use case is a kernel where the .text+.data+.bss is after 16M physical memory (debug kernel with lockdep on x86_64 can cause that) which caused a major pain in autoconfiguration in our distribution. Also, that patch unifies crashdump architectures a bit since IA64 has that semantics from the very beginning of the kdump port. Signed-off-by: Bernhard Walle <bwalle@suse.de> Cc: vgoyal@redhat.com Cc: Bernhard Walle <bwalle@suse.de> Cc: kexec@lists.infradead.org Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-08x86: cleanup e820_setup_gap(), v2Alok Kataria
e820_search_gap also take a end_addr parameter to limit search from start_addr to end_addr. Signed-off-by: AloK N Kataria <akataria@vmware.com> Acked-by: Yinghai Lu <yhlu.kernel@gmail.com> Cc: "lenb@kernel.org" <lenb@kernel.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-08x86: add check for node passed to node_to_cpumask, v3Mike Travis
* When CONFIG_DEBUG_PER_CPU_MAPS is set, the node passed to node_to_cpumask and node_to_cpumask_ptr should be validated. If invalid, then a dump_stack is performed and a zero cpumask is returned. v2: Slightly different version to remove a compiler warning. v3: Redone to reflect moving setup.c -> setup_percpu.c Signed-off-by: Mike Travis <travis@sgi.com> Cc: Vegard Nossum <vegard.nossum@gmail.com> Cc: "akpm@linux-foundation.org" <akpm@linux-foundation.org> Cc: Yinghai Lu <yhlu.kernel@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-08x86: fix CPA self-test for "x86/paravirt: groundwork for 64-bit Xen support"Jeremy Fitzhardinge
Ingo Molnar wrote: > -tip auto-testing found pagetable corruption (CPA self-test failure): > > [ 32.956015] CPA self-test: > [ 32.958822] 4k 2048 large 508 gb 0 x 2556[ffff880000000000-ffff88003fe00000] miss 0 > [ 32.964000] CPA ffff88001d54e000: bad pte 1d4000e3 > [ 32.968000] CPA ffff88001d54e000: unexpected level 2 > [ 32.972000] CPA ffff880022c5d000: bad pte 22c000e3 > [ 32.976000] CPA ffff880022c5d000: unexpected level 2 > [ 32.980000] CPA ffff8800200ce000: bad pte 200000e3 > [ 32.984000] CPA ffff8800200ce000: unexpected level 2 > [ 32.988000] CPA ffff8800210f0000: bad pte 210000e3 > > config and full log can be found at: > > http://redhat.com/~mingo/misc/config-Mon_Jun_30_11_11_51_CEST_2008.bad > http://redhat.com/~mingo/misc/log-Mon_Jun_30_11_11_51_CEST_2008.bad Phew. OK, I've worked this out. Short version is that's it's a false alarm, and there was no real failure here. Long version: * I changed the code to create the physical mapping pagetables to reuse any existing mapping rather than replace it. Specifically, reusing an pud pointed to by the pgd caused this symptom to appear. * The specific PUD being reused is the one created statically in head_64.S, which creates an initial 1GB mapping. * That mapping doesn't have _PAGE_GLOBAL set on it, due to the inconsistency between __PAGE_* and PAGE_*. * The CPA test attempts to clear _PAGE_GLOBAL, and then checks to see that the resulting range is 1) shattered into 4k pages, and 2) has no _PAGE_GLOBAL. * However, since it didn't have _PAGE_GLOBAL on that range to start with, change_page_attr_clear() had nothing to do, and didn't bother shattering the range, * resulting in the reported messages The simple fix is to set _PAGE_GLOBAL in level2_ident_pgt. An additional fix to make CPA testing more robust by using some other pagetable bit (one of the unused available-to-software ones). This would solve spurious CPA test warnings under Xen which uses _PAGE_GLOBAL for its own purposes (ie, not under guest control). Also, we should revisit the use of _PAGE_GLOBAL in asm-x86/pgtable.h, and use it consistently, and drop MAKE_GLOBAL. The first time I proposed it it caused breakages in the very early CPA code; with luck that's all fixed now. Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Cc: Nick Piggin <npiggin@suse.de> Cc: Mark McLoughlin <markmc@redhat.com> Cc: xen-devel <xen-devel@lists.xensource.com> Cc: Eduardo Habkost <ehabkost@redhat.com> Cc: Vegard Nossum <vegard.nossum@gmail.com> Cc: Stephen Tweedie <sct@redhat.com> Cc: Yinghai Lu <yhlu.kernel@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-08x86: move reserve_setup_data to setup.cYinghai Lu
Ying Huang would like setup_data to be reserved, but not included in the no save range. Here we try to modify the e820 table to reserve that range early. also add that in early_res in case bootloader messes up with the ramdisk. other solution would be 1. add early_res_to_highmem... 2. early_res_to_e820... but they could reserve another type memory wrongly, if early_res has some resource reserved early, and not needed later, but it is not removed from early_res in time. Like the RAMDISK (already handled). Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com> Cc: andi@firstfloor.org Tested-by: Huang, Ying <ying.huang@intel.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-08x86, paravirt, 64-bit: fix compile errors with IA32_EMULATION offJeremy Fitzhardinge
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-08x86: setup_arch() && early_ioremap_init()Jeremy Fitzhardinge
Looks like the setup.c unification missed the early_ioremap init from the early_ioremap unification. Unconditionally call early_ioremap_init(). needed for "x86/paravirt: groundwork for 64-bit Xen support". Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Cc: Nick Piggin <npiggin@suse.de> Cc: Mark McLoughlin <markmc@redhat.com> Cc: xen-devel <xen-devel@lists.xensource.com> Cc: Eduardo Habkost <ehabkost@redhat.com> Cc: Vegard Nossum <vegard.nossum@gmail.com> Cc: Stephen Tweedie <sct@redhat.com> Cc: Yinghai Lu <yhlu.kernel@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-08x86: use disable_apic in 32bitYinghai Lu
change the enable_local_apic to static force_enable_local_apic for 32bit Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-08x86: fix warning in e820_reserve_resources with 32bitYinghai Lu
when 64bit resource is not enabled, we get: arch/x86/kernel/e820.c: In function ‘e820_reserve_resources’: arch/x86/kernel/e820.c:1217: warning: comparison is always false due to limited range of data type because res->start/end is resource_t aka u32. it will overflow. fix it with temp end of u64 Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-08x86: let setup_arch call init_apic_mappings for 32bitYinghai Lu
instead of calling it from trap_init() also move init ioapic mapping out of apic_32.c so 32 bit do same as 64 bit Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-08x86: early res print out alignment v2Yinghai Lu
v2: fix print info to cont Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-08x86: move fix mapping page table range earlyYinghai Lu
do that in init_memory_mapping also remove one init_ohci1394_dma_on_all_controllers Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-08x86: clean up ARCH_SETUPYinghai Lu
asm-x86/paravirt.h already have protection with CONFIG_PARAVIRT inside Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-08x86: limit E820 map when a user-defined memory map is specifiedBernhard Walle
This patch brings back limiting of the E820 map when a user-defined E820 map is specified. While the behaviour of i386 (32 bit) was to limit the E820 map (and /proc/iomem), the behaviour of x86-64 (64 bit) was not to limit. That patch limits the E820 map again for both x86 architectures. Code was tested for compilation and booting on a 32 bit and 64 bit system. Signed-off-by: Bernhard Walle <bwalle@suse.de> Acked-by: Yinghai Lu <yhlu.kernel@gmail.com> Cc: kexec@lists.infradead.org Cc: vgoyal@redhat.com Cc: Bernhard Walle <bwalle@suse.de> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-08x86/paravirt, 64-bit: make load_gs_index() a paravirt operationJeremy Fitzhardinge
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com> Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Cc: xen-devel <xen-devel@lists.xensource.com> Cc: Stephen Tweedie <sct@redhat.com> Cc: Eduardo Habkost <ehabkost@redhat.com> Cc: Mark McLoughlin <markmc@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-08x86/paravirt, 64-bit: add adjust_exception_frameJeremy Fitzhardinge
64-bit Xen pushes a couple of extra words onto an exception frame. Add a hook to deal with them. Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Cc: xen-devel <xen-devel@lists.xensource.com> Cc: Stephen Tweedie <sct@redhat.com> Cc: Eduardo Habkost <ehabkost@redhat.com> Cc: Mark McLoughlin <markmc@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-08x86/paravirt: add sysret/sysexit pvops for returning to 32-bit compatibility ↵Jeremy Fitzhardinge
userspace In a 64-bit system, we need separate sysret/sysexit operations to return to a 32-bit userspace. Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citirx.com> Cc: xen-devel <xen-devel@lists.xensource.com> Cc: Stephen Tweedie <sct@redhat.com> Cc: Eduardo Habkost <ehabkost@redhat.com> Cc: Mark McLoughlin <markmc@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-08x86/paravirt, 64-bit: don't restore user rsp within sysretJeremy Fitzhardinge
There's no need to combine restoring the user rsp within the sysret pvop, so split it out. This makes the pvop's semantics closer to the machine instruction. Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citirx.com> Cc: xen-devel <xen-devel@lists.xensource.com> Cc: Stephen Tweedie <sct@redhat.com> Cc: Eduardo Habkost <ehabkost@redhat.com> Cc: Mark McLoughlin <markmc@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-08x86/paravirt: split sysret and sysexitJeremy Fitzhardinge
Don't conflate sysret and sysexit; they're different instructions with different semantics, and may be in use at the same time (at least within the same kernel, depending on whether its an Intel or AMD system). sysexit - just return to userspace, does no register restoration of any kind; must explicitly atomically enable interrupts. sysret - reloads flags from r11, so no need to explicitly enable interrupts on 64-bit, responsible for restoring usermode %gs Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citirx.com> Cc: xen-devel <xen-devel@lists.xensource.com> Cc: Stephen Tweedie <sct@redhat.com> Cc: Eduardo Habkost <ehabkost@redhat.com> Cc: Mark McLoughlin <markmc@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
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