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2008-04-17x86: coding style fixes to arch/x86/mach-generic/default.cPaolo Ciarrocchi
Just whitespace cleanups. total: 0 errors, 0 warnings, 26 lines checked arch/x86/mach-generic/default.c has no obvious style problems and is ready for submission. arch/x86/mach-generic/default.o: text data bss dec hex filename 1036 140 0 1176 498 default.o.before 1036 140 0 1176 498 default.o.after md5: f283c53022c568f3162bbcde44f65762 default.o.before.asm f283c53022c568f3162bbcde44f65762 default.o.after.asm Signed-off-by: Paolo Ciarrocchi <paolo.ciarrocchi@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17x86: coding style fixes to arch/x86/mach-generic/probe.cPaolo Ciarrocchi
The patch kills 20 errors and a few warnings. arch/x86/mach-generic/probe.o: text data bss dec hex filename 578 45 0 623 26f probe.o.before 578 45 0 623 26f probe.o.after md5: 86eb1c3e3cf37f81d37bcd9a0c9f14ad probe.o.before.asm 86eb1c3e3cf37f81d37bcd9a0c9f14ad probe.o.after.asm Signed-off-by: Paolo Ciarrocchi <paolo.ciarrocchi@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17x86: coding style fixes to arch/x86/oprofile/op_model_athlon.cPaolo Ciarrocchi
The patch fixes 33 errors and a few warnings reported by checkpatch.pl arch/x86/oprofile/op_model_athlon.o: text data bss dec hex filename 1691 0 32 1723 6bb op_model_athlon.o.before 1691 0 32 1723 6bb op_model_athlon.o.after md5: c354bc2d7140e1e626c03390eddaa0a6 op_model_athlon.o.before.asm c354bc2d7140e1e626c03390eddaa0a6 op_model_athlon.o.after.asm Signed-off-by: Paolo Ciarrocchi <paolo.ciarrocchi@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17x86: coding style fixes to arch/x86/oprofile/op_model_ppro.cPaolo Ciarrocchi
no code changed: arch/x86/oprofile/op_model_ppro.o: text data bss dec hex filename 1765 0 16 1781 6f5 op_model_ppro.o.before 1765 0 16 1781 6f5 op_model_ppro.o.after md5: 71c7f68d2197d686e3d1121bc18a6b6e op_model_ppro.o.before.asm 71c7f68d2197d686e3d1121bc18a6b6e op_model_ppro.o.after.asm Signed-off-by: Paolo Ciarrocchi <paolo.ciarrocchi@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17x86: coding style fixes to arch/x86/kernel/x8664_ksyms_64.cPaolo Ciarrocchi
arch/x86/kernel/x8664_ksyms_64.o: text data bss dec hex filename 0 0 0 0 0 x8664_ksyms_64.o.before 0 0 0 0 0 x8664_ksyms_64.o.after md5: 2dd2d82a2b440a3c29b9ac9ce3221994 x8664_ksyms_64.o.before.asm 2dd2d82a2b440a3c29b9ac9ce3221994 x8664_ksyms_64.o.after.asm Signed-off-by: Paolo Ciarrocchi <paolo.ciarrocchi@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17x86: coding style fixes to arch/x86/kernel/cpu/mcheck/p5.cPaolo Ciarrocchi
The patch make the file errors free. Only 4 "WARNING: line over 80 characters" left. arch/x86/kernel/cpu/mcheck/p5.o: text data bss dec hex filename 452 0 4 456 1c8 p5.o.before 452 0 4 456 1c8 p5.o.after md5: 50c945ef150aa95bf0481cc3e1dc3315 p5.o.before.asm 50c945ef150aa95bf0481cc3e1dc3315 p5.o.after.asm Signed-off-by: Paolo Ciarrocchi <paolo.ciarrocchi@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17x86: coding style fixes to arch/x86/lib/string_32.cPaolo Ciarrocchi
The patch kills 45 errors and a few warnings. The file is now error/warning free: total: 0 errors, 0 warnings, 237 lines checked arch/x86/lib/string_32.c has no obvious style problems and is ready for submission. no code changed: arch/x86/lib/string_32.o: text data bss dec hex filename 639 0 0 639 27f string_32.o.before 639 0 0 639 27f string_32.o.after md5: 2db1c48187cf5113bb595153ee1fc73d string_32.o.before.asm 2db1c48187cf5113bb595153ee1fc73d string_32.o.after.asm Signed-off-by: Paolo Ciarrocchi <paolo.ciarrocchi@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17x86: coding style fixes to arch/x86/kernel/syscall_64.cPaolo Ciarrocchi
After the patch: total: 0 errors, 1 warnings, 29 lines checked no code changed: arch/x86/kernel/syscall_64.o: text data bss dec hex filename 2304 0 0 2304 900 syscall_64.o.before 2304 0 0 2304 900 syscall_64.o.after md5: 0fdbb875cde8892296585226b92f4333 syscall_64.o.before.asm 0fdbb875cde8892296585226b92f4333 syscall_64.o.after.asm Signed-off-by: Paolo Ciarrocchi <paolo.ciarrocchi@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17x86: coding style fixes to arch/x86/lib/memmove_64.cPaolo Ciarrocchi
After the patch: total: 0 errors, 0 warnings, 21 lines checked no code changed: arch/x86/lib/memmove_64.o: text data bss dec hex filename 116 0 0 116 74 memmove_64.o.before 116 0 0 116 74 memmove_64.o.after md5: 2d6b0951cafb86a11a222cdd70f6104f memmove_64.o.before.asm 2d6b0951cafb86a11a222cdd70f6104f memmove_64.o.after.asm Signed-off-by: Paolo Ciarrocchi <paolo.ciarrocchi@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17x86: boot protocol updatesIan Campbell
Also update field names to simply payload_{offset,length} so as to not rule out uncompressed images. Signed-off-by: Ian Campbell <ijc@hellion.org.uk> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Jeremy Fitzhardinge <jeremy@goop.org> Cc: virtualization@lists.linux-foundation.org Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17x86: reduce arch/x86/mm/ioremap.o sizeIan Campbell
> Don't we have a special section for page-aligned data so it doesn't > waste most of two pages? We have .bss.page_aligned and it seems appropriate to use it. text data bss dec hex filename - 3388 8236 4 11628 2d6c ../build-32/arch/x86/mm/ioremap.o + 3388 48 4100 7536 1d70 ../build-32/arch/x86/mm/ioremap.o Signed-off-by: Ian Campbell <ijc@hellion.org.uk> Cc: Matt Mackall <mpm@selenic.com> Cc: Sam Ravnborg <sam@ravnborg.org> Cc: Huang Ying <ying.huang@intel.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-04-17x86: more coding style fixes in centaur.cIngo Molnar
no code changed: arch/x86/kernel/cpu/centaur.o: text data bss dec hex filename 1031 324 0 1355 54b centaur.o.before 1031 324 0 1355 54b centaur.o.after md5: 4f306a7f980b58eb69c4bdcfcde565f1 centaur.o.before.asm 4f306a7f980b58eb69c4bdcfcde565f1 centaur.o.after.asm Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-04-17x86: coding style fixes for arch/x86/kernel/cpu/centaur.cPaolo Ciarrocchi
Kills more than 150 errors/warnings Signed-off-by: Paolo Ciarrocchi <paolo.ciarrocchi@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-04-17x86: clean up mmx_32.cIngo Molnar
checkpatch.pl --file cleanups: before: total: 74 errors, 3 warnings, 386 lines checked after: total: 0 errors, 0 warnings, 377 lines checked no code changed: arch/x86/lib/mmx_32.o: text data bss dec hex filename 1323 0 8 1331 533 mmx_32.o.before 1323 0 8 1331 533 mmx_32.o.after md5: 4cc39f1017dc40a5ebf02ce0ff7312bc mmx_32.o.before.asm 4cc39f1017dc40a5ebf02ce0ff7312bc mmx_32.o.after.asm Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-04-17x86: fix cmos read and write to not use inb_p and outb_pDavid P. Reed
fix code to access CMOS rtc registers so that it does not use inb_p and outb_p routines, which are deprecated. Extensive research on all known CMOS RTC chipset timing shows that there is no need for a delay in accessing the registers of these chips even on old machines. These chipa are never on an expansion bus, but have always been "motherboard" resources, either in the processor chipset or explicitly on the motherboard, and they are not part of the ISA/LPC or PCI buses, so delays should not be based on bus timing. The reason to fix it: 1) port 80 writes often hang some laptops that use ENE EC chipsets, esp. those designed and manufactured by Quanta for HP; 2) RTC accesses are timing sensitive, and extra microseconds may matter; 3) the new "io_delay" function is calibrated by expansion bus timing needs, thus is not appropriate for access to CMOS rtc registers. Signed-off-by: David P. Reed <dpreed@reed.com> Acked-by: Alan Cox <alan@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-04-17x86: use ELF section to list CPU vendor specific codeThomas Petazzoni
Replace the hardcoded list of initialization functions for each CPU vendor by a list in an ELF section, which is read at initialization in arch/x86/kernel/cpu/cpu.c to fill the cpu_devs[] array. The ELF section, named .x86cpuvendor.init, is reclaimed after boot, and contains entries of type "struct cpu_vendor_dev" which associates a vendor number with a pointer to a "struct cpu_dev" structure. This first modification allows to remove all the VENDOR_init_cpu() functions. This patch also removes the hardcoded calls to early_init_amd() and early_init_intel(). Instead, we add a "c_early_init" member to the cpu_dev structure, which is then called if not NULL by the generic CPU initialization code. Unfortunately, in early_cpu_detect(), this_cpu is not yet set, so we have to use the cpu_devs[] array directly. This patch is part of the Linux Tiny project, and is needed for further patch that will allow to disable compilation of unused CPU support code. Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-04-17x86, vsmp: use the paravirt helpersGlauber Costa
Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: Ravikiran Thirumalai <kiran@scalemp.com> Acked-by: Shai Fultheim <shai@scalemp.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-04-17x86: introduce vsmp paravirt helpersGlauber Costa
Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: Ravikiran Thirumalai <kiran@scalemp.com> Acked-by: Shai Fultheim <shai@scalemp.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-04-17x86: call vsmp_init explicitlyGlauber Costa
It becomes to early for ioremap, so we use early_ioremap Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: Ravikiran Thirumalai <kiran@scalemp.com> Acked-by: Shai Fultheim <shai@scalemp.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-04-17x86: make vsmp_init void, instead of static intGlauber Costa
Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: Ravikiran Thirumalai <kiran@scalemp.com> Acked-by: Shai Fultheim <shai@scalemp.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-04-17x86: change vsmp compile dependencyGlauber Costa
Change Makefile so vsmp_64.o object is dependent on PARAVIRT, rather than X86_VSMP Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: Ravikiran Thirumalai <kiran@scalemp.com> Acked-by: Shai Fultheim <shai@scalemp.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-04-17x86: apic: extended interrupt LVT support for AMDRobert Richter
Signed-off-by: Robert Richter <robert.richter@amd.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-04-17x86: remove never used nodenumer in pdaYinghai Lu
Signed-off-by: Yinghai Lu <yinghai.lu@sun.com> Cc: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-04-17x86: get apic_id later in acpi_numa_processor_affinity_initYinghai Lu
we don't need get that so early. Signed-off-by: Yinghai Lu <yinghai.lu@sun.com> Cc: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-04-17x86: reducing debuginfo size by removing unneeded includesArnaldo Carvalho de Melo
I found it strange that the struct sk_buff definition was found inside the DWARF debugging sections in the generated object, so I verified and found that there is no need for the files that bring struct sk_buff definition into this file and verified also that sk_buff is not brought in indirectly too, thru other headers. I went on and removed many other unneeded includes and the end result is: [acme@doppio net-2.6]$ l /tmp/sys_ia32.o.before /tmp/sys_ia32.o.after -rw-rw-r-- 1 acme acme 185240 2008-02-06 19:19 /tmp/sys_ia32.o.after -rw-rw-r-- 1 acme acme 248328 2008-02-06 19:00 /tmp/sys_ia32.o.before Almost 64KB only on this object file! There were no other side effects from this change: [acme@doppio net-2.6]$ objcopy -j "text" /tmp/sys_ia32.o.before /tmp/text.before [acme@doppio net-2.6]$ objcopy -j "text" /tmp/sys_ia32.o.after /tmp/text.after [acme@doppio net-2.6]$ md5sum /tmp/text.before /tmp/text.after b7ac9b17942add68494e698e4f965d36 /tmp/text.before b7ac9b17942add68494e698e4f965d36 /tmp/text.after One of the complaints about using tools such as systemtap is that one has to install the huge kernel-debuginfo package: [acme@doppio net-2.6]$ rpm -q --qf "%{size}\n" kernel-rt-debuginfo 471737710 543867594 [acme@doppio net-2.6]$ Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-04-17x86: bump image header to version 2.08.Ingo Molnar
Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-04-17x86: add a crc32 checksum to the kernel image.Ian Campbell
Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-04-17x86: use ELF format in compressed images.Ian Campbell
Signed-off-by: Ian Campbell <ijc@hellion.org.uk> Cc: Ian Campbell <ijc@hellion.org.uk> Cc: Jeremy Fitzhardinge <jeremy@goop.org> Cc: virtualization@lists.linux-foundation.org Cc: H. Peter Anvin <hpa@zytor.com> Cc: Jeremy Fitzhardinge <jeremy@goop.org> Cc: virtualization@lists.linux-foundation.org Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-04-17x86: define DEBUG_SIG in signal_64.cHarvey Harrison
Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Cc: Roland McGrath <roland@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-04-17x86: Unify argument names in signal_32|64.cHarvey Harrison
Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Cc: Roland McGrath <roland@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-04-17x86: move struct definitions to unifed sigframe.hHarvey Harrison
[ tglx@linutronix.de: cleanup the other structs as well ] Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Cc: Roland McGrath <roland@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-04-17x86: use sizeof(long) to unify signal_32|64.cHarvey Harrison
Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Cc: Roland McGrath <roland@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-04-17x86: Use FIX_EFLAGS define in X86_64Harvey Harrison
[ tglx@linutronix.de: simplified ] Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Cc: Roland McGrath <roland@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-04-17x86: reduce trivial style differences in signal_32|64.cHarvey Harrison
Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Cc: Roland McGrath <roland@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-04-17x86: regparm(3) is mandatory, no need to annotateHarvey Harrison
Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Cc: Roland McGrath <roland@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-04-17x86: make X86_32 pt_regs members unsigned longHarvey Harrison
Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Cc: Roland McGrath <roland@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-04-17x86: change most X86_32 pt_regs members to unsigned longHarvey Harrison
Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Cc: Roland McGrath <roland@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-04-17x86: enable ACPI extended century handling for 32bitAndi Kleen
The extended century readout does not solve the year 2038 problem on 32bit! v2: Fix compilation on !ACPI, pointed out by tglx Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-04-17x86: add warning when RTC clock reports binaryAndi Kleen
We assume that the RTC clock is BCD, so print a warning if it claims to be binary. [ tglx@linutronix.de: changed to WARN_ON - we want to know that! If no one reports it we can remove the complete if (RTC_ALWAYS_BCD) magic, which has RTC_ALWAYS_BCD defined to 1 since Linux 1.0 ... ] Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-04-17x86: use year 2000 offset for cmos clockAndi Kleen
We know it is already after 2000. Use the year 2000 offset for both 32 and 64 bit, which removes ifdefs and the 1970 magic. [ tglx@linutronix.de: remove 1970 magic, replace bogus commit message ] Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-04-17x86: clean up find_e820_area(), 64-bitYinghai Lu
Change size to unsigned long, becase caller and user all used unsigned long. Also make bad_addr take an alignment parameter. Signed-off-by: Yinghai Lu <yinghai.lu@sun.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-04-17x86: do kernel direct mapping at boot using GB pagesAndi Kleen
The AMD Fam10h CPUs support new Gigabyte page table entry for mapping 1GB at a time. Use this for the kernel direct mapping. Only done for 64bit because i386 does not support GB page tables. This only applies to the data portion of the direct mapping; the kernel text mapping stays with 2MB pages because the AMD Fam10h microarchitecture does not support GB ITLBs and AMD recommends against using GB mappings for code. Can be disabled with disable_gbpages on the kernel command line [ tglx@linutronix.de: simplify enable code ] [ Yinghai Lu <yinghai.lu@sun.com>: boot fix on 256 GB RAM ] Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-04-17x86: add gbpages switchesIngo Molnar
These new controls toggle experimental support for a new CPU feature, the straightforward extension of largepages from the pmd level to the pud level, which allows 1GB (kernel) TLBs instead of 2MB TLBs. Turn it off by default, as this code has not been tested well enough yet. Use the CONFIG_DIRECT_GBPAGES=y .config option or gbpages on the boot line can be used to enable it. If enabled in the .config then nogbpages boot option disables it. Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-04-17x86: clean up the page table dumper and add 32-bit supportH. Peter Anvin
Clean up the page table dumper (fix boundary conditions, table driven address ranges, some formatting changes since it is no longer using the kernel log but a separate virtual file), and generalize to 32 bits. [ mingo@elte.hu: x86: fix the pagetable dumper ] Signed-off-by: H. Peter Anvin <hpa@zytor.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-04-17x86: add code to dump the (kernel) page tables for visual inspection by ↵Arjan van de Ven
kernel developers This patch adds code to the kernel to have an (optional) /proc/kernel_page_tables debug file that basically dumps the kernel pagetables; this allows us kernel developers to verify that nothing fishy is going on and that the various mappings are set up correctly. This was quite useful in finding various change_page_attr() bugs, and is very likely to be useful in the future as well. Signed-off-by: Arjan van de Ven <arjan@linux.intel.com> Cc: mingo@elte.hu Cc: tglx@tglx.de Cc: hpa@zytor.com Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-04-17x86: unify arch/x86/mm/MakefileH. Peter Anvin
Unify arch/x86/mm/Makefile between 32 and 64 bits. All configuration variables that are protected by Kconfig constraints have been put in the common part of the Makefile; however, the NUMA files are totally different between 32 and 64 bits and are handled via an ifdef. Signed-off-by: H. Peter Anvin <hpa@zytor.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-04-17x86: add debug info to DEBUG_PAGEALLOCThomas Gleixner
Add debug information for DEBUG_PAGEALLOC to get some statistics about the pool usage and split status. Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-04-17x86 vDSO: don't map 32-bit vdso when disabledRoland McGrath
We map a VMA for the 32-bit vDSO even when it's disabled, which is stupid. For the 32-bit kernel it's the vdso_enabled boot parameter/sysctl and for the 64-bit kernel it's the vdso32 boot parameter/syscall32 sysctl. When it's disabled, we don't pass AT_SYSINFO_EHDR so processes don't use the vDSO for anything, but we still map it. For the non-compat vDSO, this means we're always putting an extra VMA somewhere, maybe lousing up the control of the address space the user was hoping for. Honor the setting by doing nothing in arch_setup_additional_pages. [ also see: "x86 vDSO: don't use disabled vDSO for signal trampoline" ] Signed-off-by: Roland McGrath <roland@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17x86 vDSO: don't use disabled vDSO for signal trampolineRoland McGrath
If the vDSO was not mapped, don't use it as the "restorer" for a signal handler. Whether we have a pointer in mm->context.vdso depends on what happened at exec time, so we shouldn't check any global flags now. Background: Currently, every 32-bit exec gets the vDSO mapped even if it's disabled (the process just doesn't get told about it). Because it's in fact always there, the bug that this patch fixes cannot happen now. With the second patch, it won't be mapped at all when it's disabled, which is one of the things that people might really want when they disable it (so nothing they didn't ask for goes into their address space). The 32-bit signal handler setup when SA_RESTORER is not used refers to current->mm->context.vdso without regard to whether the vDSO has been disabled when the process was exec'd. This patch fixes this not to use it when it's null, which becomes possible after the second patch. (This never happens in normal use, because glibc's sigaction call uses SA_RESTORER unless glibc detected the vDSO.) Signed-off-by: Roland McGrath <roland@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17x86: increase the kernel text limit to 512 MBIngo Molnar
people sometimes do crazy stuff like building really large static arrays into their kernels or building allyesconfig kernels. Give more space to the kernel and push modules up a bit: kernel has 512 MB and modules have 1.5 GB. Should be enough for a few years ;-) Signed-off-by: Ingo Molnar <mingo@elte.hu>
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