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2009-02-12x86: fix warning in find_low_pfn_range()Ingo Molnar
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-02-11x86: mm/init_32.c fix compilation warningJaswinder Singh Rajput
arch/x86/mm/init_32.c: In function ‘find_low_pfn_range’: arch/x86/mm/init_32.c:696: warning: format ‘%u’ expects type ‘unsigned int’, but Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-02-09x86, pgtable.h: fix 2-level 32-bit buildIngo Molnar
- pmd_flags() needs to be available on 2-levels too - provide pud_large() wrapper as well - include page.h - it provides basic types relied on by pgtable.h Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-02-09x86, pgtable.h: macro-ify *_page() methodsIngo Molnar
The p?d_page() methods still rely on highlevel types and methods: In file included from arch/x86/kernel/early_printk.c:18: /home/mingo/tip/arch/x86/include/asm/pgtable.h: In function ‘pmd_page’: /home/mingo/tip/arch/x86/include/asm/pgtable.h:516: error: implicit declaration of function ‘__pfn_to_section’ /home/mingo/tip/arch/x86/include/asm/pgtable.h:516: error: initialization makes pointer from integer without a cast /home/mingo/tip/arch/x86/include/asm/pgtable.h:516: error: implicit declaration of function ‘__section_mem_map_addr’ /home/mingo/tip/arch/x86/include/asm/pgtable.h:516: error: return makes pointer from integer without a cast So convert them to macros and document the type dependency. Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-02-09x86: early_printk.c - fix pgtable.h unification falloutIngo Molnar
arch/x86/kernel/early_printk.c: In function ‘early_dbgp_init’: arch/x86/kernel/early_printk.c:827: error: ‘PAGE_KERNEL_NOCACHE’ undeclared (first use in this function) arch/x86/kernel/early_printk.c:827: error: (Each undeclared identifier is reported only once arch/x86/kernel/early_printk.c:827: error: for each function it appears in.) Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-02-09Merge branch 'jsgf/x86/unify' of ↵Ingo Molnar
git://git.kernel.org/pub/scm/linux/kernel/git/jeremy/xen into x86/headers
2009-02-07Merge branches 'release', 'asus', 'bugzilla-12450', 'cpuidle', 'debug', ↵Len Brown
'ec', 'misc', 'printk' and 'processor' into release
2009-02-06x86-64: fix int $0x80 -ENOSYS returnRoland McGrath
One of my past fixes to this code introduced a different new bug. When using 32-bit "int $0x80" entry for a bogus syscall number, the return value is not correctly set to -ENOSYS. This only happens when neither syscall-audit nor syscall tracing is enabled (i.e., never seen if auditd ever started). Test program: /* gcc -o int80-badsys -m32 -g int80-badsys.c Run on x86-64 kernel. Note to reproduce the bug you need auditd never to have started. */ #include <errno.h> #include <stdio.h> int main (void) { long res; asm ("int $0x80" : "=a" (res) : "0" (99999)); printf ("bad syscall returns %ld\n", res); return res != -ENOSYS; } The fix makes the int $0x80 path match the sysenter and syscall paths. Reported-by: Dmitry V. Levin <ldv@altlinux.org> Signed-off-by: Roland McGrath <roland@redhat.com>
2009-02-06x86: Fix compile error in arch/x86/kernel/early_printk.cJeremy Fitzhardinge
Fix compile problem: CC arch/x86/kernel/early_printk.o In file included from /home/jeremy/hg/xen/paravirt/linux/arch/x86/kernel/early_printk.c:17: /home/jeremy/hg/xen/paravirt/linux/arch/x86/include/asm/pgtable.h: In function 'pmd_page': /home/jeremy/hg/xen/paravirt/linux/arch/x86/include/asm/pgtable.h:516: error: implicit declaration of function '__pfn_to_section' /home/jeremy/hg/xen/paravirt/linux/arch/x86/include/asm/pgtable.h:516: warning: initialization makes pointer from integer without a cast /home/jeremy/hg/xen/paravirt/linux/arch/x86/include/asm/pgtable.h:516: error: implicit declaration of function '__section_mem_map_addr' /home/jeremy/hg/xen/paravirt/linux/arch/x86/include/asm/pgtable.h:516: warning: return makes pointer from integer without a cast /home/jeremy/hg/xen/paravirt/linux/arch/x86/include/asm/pgtable.h: In function 'pud_page': /home/jeremy/hg/xen/paravirt/linux/arch/x86/include/asm/pgtable.h:586: warning: initialization makes pointer from integer without a cast /home/jeremy/hg/xen/paravirt/linux/arch/x86/include/asm/pgtable.h:586: warning: return makes pointer from integer without a cast /home/jeremy/hg/xen/paravirt/linux/arch/x86/include/asm/pgtable.h: In function 'pgd_page': /home/jeremy/hg/xen/paravirt/linux/arch/x86/include/asm/pgtable.h:625: warning: initialization makes pointer from integer without a cast /home/jeremy/hg/xen/paravirt/linux/arch/x86/include/asm/pgtable.h:625: warning: return makes pointer from integer without a cast This is a cycling dependency between asm/pgtable.h and linux/mmzone.h when using CONFIG_SPARSEMEM. Rather than hacking up the headers some more, remove asm/pgtable.h, since early_printk.c doesn't actually need it. Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
2009-02-06x86: asm/io.h: unify ioremap prototypesJeremy Fitzhardinge
Impact: unify identical code asm/io_32.h and _64.h have identical prototypes for the ioremap family of functions. The 32-bit header had a more descriptive comment. Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
2009-02-06x86: asm/io.h: unify virt_to_phys/phys_to_virtJeremy Fitzhardinge
Impact: unify identical code asm/io_32.h and _64.h has functionally identical definitions for virt_to_phys, phys_to_virt, page_to_phys, and the isa_* variants, so just unify them. The only slightly functional change is using phys_addr_t for the physical address argument and return val. Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
2009-02-06x86: make pgd/pud/pmd/pte_none consistentJeremy Fitzhardinge
The _none test is done differently for every level of the pagetable. Standardize them by: 1: Use the native_X_val to extract the raw entry, with no need to go via paravirt_ops, diff -r 1d0646d0d319 arch/x86/include/asm/pgtable.h, and 2: Compare with 0 rather than using a boolean !, since they are actually values and not booleans. Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
2009-02-06x86: add and use pgd/pud/pmd_flagsJeremy Fitzhardinge
Add pgd/pud/pmd_flags which are analogous to pte_flags, and use them where-ever we only care about testing the flags portions of the respective entries. Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
2009-02-06x86: unify io_remap_pfn_rangeJeremy Fitzhardinge
Impact: cleanup Unify io_remap_pfn_range. Don't demacro yet. Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
2009-02-06x86: unify pgd_noneJeremy Fitzhardinge
Impact: cleanup Unify and demacro pgd_none. Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
2009-02-06x86: unify pud_noneJeremy Fitzhardinge
Impact: cleanup Unify and demacro pud_none. Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
2009-02-06x86: unify pages_to_mbJeremy Fitzhardinge
Impact: cleanup Unify and demacro pages_to_mb. Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
2009-02-06x86: unify pmd_badJeremy Fitzhardinge
Impact: cleanup Unify and demacro pmd_bad. Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
2009-02-06x86: unify pgd_badJeremy Fitzhardinge
Impact: cleanup Unify and demacro pgd_bad. Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
2009-02-06x86: unify pgd_badJeremy Fitzhardinge
Impact: cleanup Unify and demacro pgd_bad. Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
2009-02-06x86: unify pud_largeJeremy Fitzhardinge
Impact: cleanup Unify and demacro pud_large. Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
2009-02-06x86: unify pte_offset_kernelJeremy Fitzhardinge
Impact: cleanup Unify and demacro pte_offset_kernel. Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
2009-02-06x86: unify pte_indexJeremy Fitzhardinge
Impact: cleanup Unify and demacro pte_index. Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
2009-02-06x86: unify pmd_pfnJeremy Fitzhardinge
Impact: cleanup Unify pmd_pfn. Unfortunately it can't be demacroed because it has a cyclic dependency on linux/mm.h:page_to_nid(). Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
2009-02-06x86: unify pmd_pfnJeremy Fitzhardinge
Impact: cleanup Unify and demacro pmd_pfn. Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
2009-02-06x86: remove redundant pfn_pmd definitionJeremy Fitzhardinge
Impact: cleanup It's already defined in pgtable.h Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
2009-02-06x86: unify pmd_offsetJeremy Fitzhardinge
Impact: cleanup Unify and demacro pmd_offset. Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
2009-02-06x86: unify pmd_indexJeremy Fitzhardinge
Impact: cleanup Unify and demacro pmd_index. Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
2009-02-06x86: unify pmd_pageJeremy Fitzhardinge
Impact: cleanup Unify and demacro pmd_page. Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
2009-02-06x86: unify pmd_page_vaddrJeremy Fitzhardinge
Impact: cleanup Unify and demacro pmd_page_vaddr. Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
2009-02-06x86: unify pud_offsetJeremy Fitzhardinge
Impact: cleanup Unify and demacro pud_offset. Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
2009-02-06x86: unify pud_indexJeremy Fitzhardinge
Impact: cleanup Unify and demacro pud_index. Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
2009-02-06x86: unify pgd_pageJeremy Fitzhardinge
Impact: cleanup Unify and demacro pgd_page. Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
2009-02-06x86: unify pud_pageJeremy Fitzhardinge
Impact: cleanup Unify and demacro pud_page. Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
2009-02-06x86: include pgtable_SIZE.h earlierJeremy Fitzhardinge
We'll need the definitions sooner. Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
2009-02-06x86: unify pud_page_vaddrJeremy Fitzhardinge
Impact: cleanup Unify and demacro pud_page_vaddr. Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
2009-02-06x86: unify pgd_page_vaddrJeremy Fitzhardinge
Impact: cleanup Unify and demacro pgd_page_vaddr. Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
2009-02-06x86: unify pmd_noneJeremy Fitzhardinge
Impact: cleanup Unify and demacro pmd_none. Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
2009-02-06x86: unify pmd_presentJeremy Fitzhardinge
Impact: cleanup Unify and demacro pmd_present. Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
2009-02-06x86: unify pgd_presentJeremy Fitzhardinge
Impact: cleanup Unify and demacro pgd_present. Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
2009-02-06x86: unify pud_presentJeremy Fitzhardinge
Impact: cleanup Unify and demacro pud_present. Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
2009-02-06x86: unify pte_presentJeremy Fitzhardinge
Impact: cleanup Unify and demacro pte_present. Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
2009-02-06x86: unify pte_sameJeremy Fitzhardinge
Impact: cleanup Unify and demacro pte_same. Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
2009-02-06x86: unify pte_noneJeremy Fitzhardinge
Impact: cleanup Unify and demacro pte_none. Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
2009-02-05prevent kprobes from catching spurious page faultsMasami Hiramatsu
Prevent kprobes from catching spurious faults which will cause infinite recursive page-fault and memory corruption by stack overflow. Signed-off-by: Masami Hiramatsu <mhiramat@redhat.com> Cc: <stable@kernel.org> [2.6.28.x] Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-02-04Merge branch 'core/xen' into x86/urgentIngo Molnar
2009-02-04ACPI: cpufreq: Remove deprecated /proc/acpi/processor/../performance proc ↵Thomas Renninger
entries They were long enough set deprecated... Update Documentation/cpu-freq/users-guide.txt: The deprecated files listed there seen not to exist for some time anymore already. Signed-off-by: Thomas Renninger <trenn@suse.de> Signed-off-by: Len Brown <len.brown@intel.com>
2009-02-03x86: APIC: enable workaround on AMD Fam10h CPUsBorislav Petkov
Impact: fix to enable APIC for AMD Fam10h on chipsets with a missing/b0rked ACPI MP table (MADT) Booting a 32bit kernel on an AMD Fam10h CPU running on chipsets with missing/b0rked MP table leads to a hang pretty early in the boot process due to the APIC not being initialized. Fix that by falling back to the default APIC base address in 32bit code, as it is done in the 64bit codepath. Signed-off-by: Borislav Petkov <borislav.petkov@amd.com> Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2009-02-03xen: disable interrupts before saving in percpuJeremy Fitzhardinge
Impact: Fix race condition xen_mc_batch has a small preempt race where it takes the address of a percpu variable immediately before disabling interrupts, thereby leaving a small window in which we may migrate to another cpu and save the flags in the wrong percpu variable. Disable interrupts before saving the old flags in a percpu. Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2009-02-02x86: push old stack address on irqstack for unwinderMartin Hicks
Impact: Fixes dumpstack and KDB on 64 bits This re-adds the old stack pointer to the top of the irqstack to help with unwinding. It was removed in commit d99015b1abbad743aa049b439c1e1dede6d0fa49 as part of the save_args out-of-line work. Both dumpstack and KDB require this information. Signed-off-by: Martin Hicks <mort@sgi.com> Signed-off-by: H. Peter Anvin <hpa@zytor.com>
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