26 Jan, 2011
1 commit
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memmove_64.c only implements memmove() function which is completely written in
inline assembly code. Therefore it doesn't make sense to keep the assembly code
in .c file.Currently memmove() doesn't store return value to rax. This may cause issue if
caller uses the return value. The patch fixes this issue.Signed-off-by: Fenghua Yu
LKML-Reference:
Signed-off-by: H. Peter Anvin
29 Apr, 2010
1 commit
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It's not used by any module, and i386 (as well as some other arches)
also doesn't export its equivalent (swapper_pg_dir).Signed-off-by: Jan Beulich
LKML-Reference:
Signed-off-by: H. Peter Anvin
30 Dec, 2009
1 commit
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In order to avoid unnecessary chains of branches, rather than
implementing copy_user_generic() as a function consisting of
just a single (possibly patched) branch, instead properly deal
with patching call instructions in the alternative instructions
framework, and move the patching into the callers.As a follow-on, one could also introduce something like
__EXPORT_SYMBOL_ALT() to avoid patching call sites in modules.Signed-off-by: Jan Beulich
Cc: Nick Piggin
Cc: Linus Torvalds
Cc: Andrew Morton
LKML-Reference:
Signed-off-by: Ingo Molnar
17 Dec, 2009
1 commit
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…git/tip/linux-2.6-tip
* 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
x86: Fix kprobes build with non-gawk awk
x86: Split swiotlb initialization into two stages
x86: Regex support and known-movable symbols for relocs, fix _end
x86, msr: Remove incorrect, duplicated code in the MSR driver
x86: Merge kernel_thread()
x86: Sync 32/64-bit kernel_thread
x86, 32-bit: Use same regs as 64-bit for kernel_thread_helper
x86, 64-bit: Use user_mode() to determine new stack pointer in copy_thread()
x86, 64-bit: Move kernel_thread to C
x86-64, paravirt: Call set_iopl_mask() on 64 bits
x86-32: Avoid pipeline serialization in PTREGSCALL1 and 2
x86: Merge sys_clone
x86, 32-bit: Convert sys_vm86 & sys_vm86old
x86: Merge sys_sigaltstack
x86: Merge sys_execve
x86: Merge sys_iopl
x86-32: Add new pt_regs stubs
cpumask: Use modern cpumask style in arch/x86/kernel/cpu/mcheck/mce-inject.c
15 Dec, 2009
1 commit
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For CONFIG_PARAVIRT, load_gs_index is an inline function (it's #defined
to native_load_gs_index otherwise).Exporting an inline function breaks the new assembler-based alphabetical
sorted symbol list:Today's linux-next build (x86_64 allmodconfig) failed like this:
.tmp_exports-asm.o: In function `__ksymtab_load_gs_index':
(__ksymtab_sorted+0x5b40): undefined reference to `load_gs_index'Signed-off-by: Rusty Russell
To: x86@kernel.org
Cc: alan-jenkins@tuffmail.co.uk
11 Dec, 2009
1 commit
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Prepare for merging with 32-bit.
Signed-off-by: Brian Gerst
LKML-Reference:
Signed-off-by: H. Peter Anvin
16 Nov, 2009
1 commit
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On x86-64, copy_[to|from]_user() rely on assembly routines that
never call might_fault(), making us missing various lockdep
checks.This doesn't apply to __copy_from,to_user() that explicitly
handle these calls, neither is it a problem in x86-32 where
copy_to,from_user() rely on the "__" prefixed versions that
also call might_fault().Signed-off-by: Frederic Weisbecker
Cc: Arjan van de Ven
Cc: Linus Torvalds
Cc: Nick Piggin
Cc: Peter Zijlstra
LKML-Reference:
[ v2: fix module export ]
Signed-off-by: Ingo Molnar
15 Nov, 2009
1 commit
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This v2.6.26 commit:
ad2fc2c: x86: fix copy_user on x86
rendered __copy_from_user_inatomic() identical to
copy_user_generic(), yet didn't make the former just call the
latter from an inline function.Furthermore, this v2.6.19 commit:
b885808: [PATCH] Add proper sparse __user casts to __copy_to_user_inatomic
converted the return type of __copy_to_user_inatomic() from
unsigned long to int, but didn't do the same to
__copy_from_user_inatomic().Signed-off-by: Jan Beulich
Cc: Linus Torvalds
Cc: Alexander Viro
Cc: Arjan van de Ven
Cc: Andi Kleen
Cc:
LKML-Reference:
Signed-off-by: Ingo Molnar
26 Sep, 2009
1 commit
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gcc (4.x) supports the __builtin_object_size() builtin, which
reports the size of an object that a pointer point to, when known
at compile time. If the buffer size is not known at compile time, a
constant -1 is returned.This patch uses this feature to add a sanity check to
copy_from_user(); if the target buffer is known to be smaller than
the copy size, the copy is aborted and a WARNing is emitted in
memory debug mode.These extra checks compile away when the object size is not known,
or if both the buffer size and the copy length are constants.Signed-off-by: Arjan van de Ven
LKML-Reference:
Signed-off-by: Ingo Molnar
16 Jan, 2009
1 commit
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pda is now a percpu variable and there's no reason it can't use plain
x86 percpu accessors. Add x86_test_and_clear_bit_percpu() and replace
pda op implementations with wrappers around x86 percpu accessors.Signed-off-by: Tejun Heo
Signed-off-by: Ingo Molnar
21 Oct, 2008
1 commit
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Due to confusion between the ftrace infrastructure and the gcc profiling
tracer "ftrace", this patch renames the config options from FTRACE to
FUNCTION_TRACER. The other two names that are offspring from FTRACE
DYNAMIC_FTRACE and FTRACE_MCOUNT_RECORD will stay the same.This patch was generated mostly by script, and partially by hand.
Signed-off-by: Steven Rostedt
Signed-off-by: Ingo Molnar
14 Jul, 2008
1 commit
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Conflicts:
arch/x86/kernel/entry_32.S
arch/x86/kernel/process_32.c
arch/x86/kernel/process_64.c
arch/x86/lib/Makefile
include/asm-x86/irqflags.h
kernel/Makefile
kernel/sched.cSigned-off-by: Ingo Molnar
08 Jul, 2008
1 commit
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i386 and x86_64 used two different schemes for maintaining the gdt.
With this patch, x86_64 initial gdt table is defined in a .c file,
same way as i386 is now. Also, we call it "gdt_page", and the descriptor,
"early_gdt_descr". This way we achieve common naming, which can allow for
more code integration.Signed-off-by: Glauber Costa
Signed-off-by: Ingo Molnar
24 Jun, 2008
1 commit
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Record the address of the mcount call-site. Currently all archs except sparc64
record the address of the instruction following the mcount call-site. Some
general cleanups are entailed. Storing mcount addresses in rec->ip enables
looking them up in the kprobe hash table later on to check if they're kprobe'd.Signed-off-by: Abhishek Sagar
Cc: davem@davemloft.net
Cc: Steven Rostedt
Signed-off-by: Ingo Molnar
24 May, 2008
1 commit
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David S. Miller noticed the following bug: the -pg instrumentation
function callback is named differently on each platform. On x86 it
is mcount, on sparc it is _mcount. So the export does not make sense
in kernel/trace/ftrace.c - move it to x86.Signed-off-by: Ingo Molnar
Signed-off-by: Thomas Gleixner
14 May, 2008
1 commit
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Fix this symbol export problem:
Building modules, stage 2.
MODPOST 193 modules
ERROR: "csum_partial" [fs/reiserfs/reiserfs.ko] undefined!
make[1]: *** [__modpost] Error 1
make: *** [modules] Error 2This is due to a known weakness of symbol exports: if a symbol's
only in-core user is an EXPORT_SYMBOL from a lib-y section, the
symbol is not linked in.The solution is to move the export to x8664_ksyms_64.c - but the real
solution would be to fix kbuild.Signed-off-by: Ingo Molnar
18 Apr, 2008
1 commit
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* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/x86/linux-2.6-x86: (613 commits)
x86: standalone trampoline code
x86: move suspend wakeup code to C
x86: coding style fixes to arch/x86/kernel/acpi/sleep.c
x86: setup_trampoline() - fix section mismatch warning
x86: section mismatch fixes, #1
x86: fix paranoia about using BIOS quickboot mechanism.
x86: print out buggy mptable
x86: use cpu_online()
x86: use cpumask_of_cpu()
x86: remove unnecessary tmp local variable
x86: remove unnecessary memset()
x86: use ioapic_read_entry() and ioapic_write_entry()
x86: avoid redundant loop in io_apic_level_ack_pending()
x86: remove superfluous initialisation in boot code.
x86: merge mpparse_{32,64}.c
x86: unify mp_register_gsi
x86: unify mp_config_acpi_legacy_irqs
x86: unify mp_register_ioapic
x86: unify uniq_io_apic_id
x86: unify smp_scan_config
...
17 Apr, 2008
2 commits
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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.asmSigned-off-by: Paolo Ciarrocchi
Signed-off-by: Ingo Molnar -
Semaphores are no longer performance-critical, so a generic C
implementation is better for maintainability, debuggability and
extensibility. Thanks to Peter Zijlstra for fixing the lockdep
warning. Thanks to Harvey Harrison for pointing out that the
unlikely() was unnecessary.Signed-off-by: Matthew Wilcox
Acked-by: Ingo Molnar
30 Jan, 2008
2 commits
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With paravirualization, hypervisors needs to handle the gdt,
that was right to this point only used at very early
inialization code. Hypervisors (lguest being the current case)
are commonly modules, so make it an exportSigned-off-by: Glauber de Oliveira Costa
Signed-off-by: Steven Rostedt
Acked-by: Jeremy Fitzhardinge
Signed-off-by: Thomas GleixnerSigned-off-by: Glauber de Oliveira Costa
Signed-off-by: Ingo Molnar
Signed-off-by: Thomas Gleixner -
This patch removes the unused exports for __{read,write}_lock_failed.
Signed-off-by: Adrian Bunk
Signed-off-by: Ingo Molnar
Signed-off-by: Thomas Gleixner
11 Oct, 2007
1 commit
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Signed-off-by: Thomas Gleixner
Signed-off-by: Ingo Molnar
