- May 02, 2006
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Jeff Dike authored
Blaisorblade's uml-makefile-nicer makes a V=0 build say SYMLINK where what's happening is really a LINK. Signed-off-by:
Jeff Dike <jdike@addtoit.com> Acked-by:
Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> Signed-off-by:
Andrew Morton <akpm@osdl.org> Signed-off-by:
Linus Torvalds <torvalds@osdl.org>
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Paolo 'Blaisorblade' Giarrusso authored
GCC hardened introduces additional symbol refererences (for the canary and friends), also in modules - add weak export_symbols for them. We already tested that the weak declaration creates no problem on both GCC's providing the function definition and on GCC's which don't provide it. Signed-off-by:
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Paolo 'Blaisorblade' Giarrusso authored
*) Rather than duplicate in various buggy ways the application of CFLAGS_NO_HARDENING and UNPROFILE (which apply to the same files), centralize it in Makefile.rules. UNPROFILE_OBJS mustn't be listed in USER_OBJS but are compiled as such. I've also verified that unprofile didn't work in the current form, because we set _c_flags directly (using CFLAGS and not USER_CFLAGS, which is wrong), which is normally used by c_flags, but we also override c_flags for all USER_OBJS, and there we don't call unprofile. Instead it only worked for unmap.o, the only one which wasn't a USER_OBJ. We need to set c_flags (which is not a public Kbuild API) to clear a lot of compilation flags like -nostdinc which Kbuild forces on everything. *) Rather than $(CFLAGS_$(notdir $@)), which expands to CFLAGS_anObj.s when building "anObj.s", use $(CFLAGS_$(*F).o) which always accesses CFLAGS_anObj.o, like done by Kbuild. *) Make c_flags apply to all targets having the same basename, rather than listing .s, .i, .lst and .o, with the use (which I tested) of $(USER_OBJS:.o=.%): c_flags = ... and of - $(obj)/unmap.c: _c_flags = ... + $(obj)/unmap.%: _c_flags = ... Signed-off-by:
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Paolo 'Blaisorblade' Giarrusso authored
To make some half-assembly stubs compile, disable various "hardened" GCC features: *) we can't make it build PIC code as we need %ebx to do syscalls and GCC wants it free for PIC *) we can't leave stack protection as the stub is moved (not relocated!) in memory so the RIP-relative access to the canary tries reading from an unmapped address and causes a segfault, since we move the stub of various megabytes (the exact amount will be decided at runtime) away from the link-time address. Signed-off-by:
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Paolo 'Blaisorblade' Giarrusso authored
Move the build of user-offsets to arch/um/sys-$(SUBARCH), where it's located. So we can also build it via Kbuild with its dependency tracking rather than by hand. While hacking here, fix also a lot of little cosmetic things. Signed-off-by:
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Mattia Dongili authored
Append /usr/lib/uml to the existing PATH environment variable to let execvp() search uml_net in FHS compliant locations. Signed-off-by:
Mattia Dongili <malattia@linux.it> Signed-off-by:
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Paolo 'Blaisorblade' Giarrusso authored
I sent a patch, it was applied as cda402b2, then it was applied again as 181ae400 by mistake. But while the 1st time it modified (correctly) cow_header_v3, the 2nd it modified cow_header_v3_broken. Signed-off-by:
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Jeff Dike authored
Blairsorblade noticed some confusion between our use of a system call's return value and errno. This patch fixes a number of related bugs - using errno instead of a return value using a return value instead of errno forgetting to negate a error return to get a positive error code Signed-off-by:
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Jeff Dike authored
Bring defconfig up to date. Also disable CONFIG_BLK_DEV_UBD_SYNC by default. By performing synchronous I/O to the host, it slows things down, only protects against host crashes, and can make a UML appear to hang while it waits for the host's disk. Signed-off-by:
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Jeff Dike authored
The MADVISE_REMOVE-checking code didn't clean up after itself. Signed-off-by:
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Jesper Juhl authored
Remove redundant NULL checks before [kv]free + small CodingStyle cleanup for arch/ Signed-off-by:
Jesper Juhl <jesper.juhl@gmail.com> Signed-off-by:
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Joris van Rantwijk authored
A quick hack to allow skas0 mode to run on 2G/2G hosts. Signed-off-by:
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Victor V. Vengerov authored
We need to walk the region list properly. Signed-off-by:
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Andi Kleen authored
The apic= option can be used to set the APIC driver too. When that is done this code would always produce bogus warnings. Signed-off-by:
Andi Kleen <ak@suse.de> Signed-off-by:
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Andi Kleen authored
The 32bit version of e820_all_mapped() needs to use u64 to avoid overflows on PAE systems. Pointed out by Jan Beulich Signed-off-by:
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Andi Kleen authored
The patch I submitted earlier to fix disabled LAPIC handling in ACPI was mismerged for some reason I still don't quite understand. Parts of it was applied to the wrong function. This patch fixes it up. Cc: <len.brown@intel.com> Signed-off-by:
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Andi Kleen authored
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- May 01, 2006
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David S. Miller authored
A context switch will force a call to flush_tlb_pending() (via switch_to()), so if we test tlb_nr to be non-zero, then sleep, it would become zero and later back at the original context we'll pass zero down into the TLB flushing code which should never see a nr argument of zero. Signed-off-by:David S. Miller <davem@davemloft.net>
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- Apr 29, 2006
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Arnd Bergmann authored
reflect the changes to Kconfig since the last update. Signed-off-by:
Arnd Bergmann <arnd.bergmann@de.ibm.com> Signed-off-by:
Paul Mackerras <paulus@samba.org>
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Arnd Bergmann authored
This patch disables and saves local interrupts during hash_page processing for SPE contexts. We have to do it explicitly in the spu_irq_class_1_bottom function. For the interrupt handlers, we get the behaviour implicitly by using SA_INTERRUPT to disable interrupts while in the handler. Signed-off-by:
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Anton Blanchard authored
Add a cputable entry for the POWER6 processor. The SIHV and SIPR bits in the mmcra have moved in POWER6, so disable support for that until oprofile is fixed. Also tell firmware that we know about POWER6. Signed-off-by:
Anton Blanchard <anton@samba.org> Signed-off-by:
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- Apr 28, 2006
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Martin Schwidefsky authored
Add sys_set_robust_list, sys_get_robust_list, sys_splice, sys_sync_file and sys_tee system calls. Signed-off-by:
Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by:
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Christian Borntraeger authored
Add a read_mostly section and define __read_mostly to prevent cache line pollution due to writes for mostly read variables. In addition fix the incorrect alignment of the cache_line_aligned data section. s390 has a cacheline size of 256 bytes. Signed-off-by:
Christian Borntraeger <cborntra@de.ibm.com> Signed-off-by:
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Gerald Schaefer authored
Print a warning with the z/VM error code if segment_load, segment_type or segment_save fail to ease the problem determination. Signed-off-by:
Gerald Schaefer <geraldsc@de.ibm.com> Signed-off-by:
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Laurent Meyer authored
If a signal handler has been established with the SA_ONSTACK option but no alternate stack is provided with sigaltstack(), the kernel still tries to install the alternate stack. Also when setting an alternate stack with sigalstack() and the SS_DISABLE flag, the kernel tries to install the alternate stack on signal delivery. Use the correct conditions sas_ss_flags() to check if the alternate stack has to be used. Signed-off-by:
Laurent Meyer <meyerlau@fr.ibm.com> Signed-off-by:
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Masami Hiramatsu authored
Fix resume_execution() to handle iret and absolute jump opcode correctly on i386. Signed-off-by:
Masami Hiramatsu <hiramatu@sdl.hitachi.co.jp> Cc: Ananth N Mavinakayanahalli <ananth@in.ibm.com> Cc: "Keshavamurthy, Anil S" <anil.s.keshavamurthy@intel.com> Cc: Prasanna S Panchamukhi <prasanna@in.ibm.com> Cc: Jim Keniston <jkenisto@us.ibm.com> Cc: Yumiko Sugita <sugita@sdl.hitachi.co.jp> Cc: Satoshi Oshima <soshima@redhat.com> Cc: Hideo Aoki <haoki@redhat.com> Signed-off-by:
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mao, bibo authored
When trap happens in user space, kprobe_exceptions_notify() funtion will skip it. This patch deletes some unnecessary code for VM_MASK judgement in eflags. Signed-off-by:
bibo, mao <bibo.mao@intel.com> Cc: Masami Hiramatsu <hiramatu@sdl.hitachi.co.jp> Cc: Ananth N Mavinakayanahalli <ananth@in.ibm.com> Acked-by:
"Keshavamurthy, Anil S" <anil.s.keshavamurthy@intel.com> Acked-by:
Prasanna S Panchamukhi <prasanna@in.ibm.com> Cc: Jim Keniston <jkenisto@us.ibm.com> Cc: Yumiko Sugita <sugita@sdl.hitachi.co.jp> Cc: Satoshi Oshima <soshima@redhat.com> Cc: Hideo Aoki <haoki@redhat.com> Signed-off-by:
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Andi Kleen authored
Running abnormal VM splits causes weird problems - people can set non-standard splits by accident, then lots of time gets wasted diagnosing it - see the long "[stable] 2.6.16.6 breaks java... sort of" email thread. So we need to make this option harder to set. Use CONFIG_EMBEDDED for this. CONFIG_EMBEDDED isn't really the right thing to use, but there's nothing else obvious and avoiding these problems is more important than Kconfig purity. Signed-off-by:
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Ashok Raj authored
CPU_HOTPLUG has race conditions when we use broadcast mode IPI. - First we introduced no_broadcast option (see include/asm-i386/mach-default/mach_ipi.h) - x86_64 solved it by using physical flat mode (same as bigsmp on i386) since this will not use broadcast shortcuts for IPI. - We switched to use bigsmp on i386 so that we can have same handling as x86_64, but apparently this caused an error message, if kernel was compiled without X86_GENERICARCH, X86_BIGSMP. The message "You have >8 CPUS..." which was bogus and misleading, and only indicated one of the above ARCH wasnt selected. So we do not switch to automatic bigsmp for HOTPLUG_CPU support in i386 until the other related config dependencies for SMP_SUSPEND etc can be done right. Signed-off-by:Ashok Raj <ashok.raj@intel.com> Signed-off-by:
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Dave Jones authored
These messages are kinda silly.. CPU#0 had 0 usecs TSC skew, fixed it up. CPU#1 had 0 usecs TSC skew, fixed it up. inspired from: http://bugzilla.kernel.org/attachment.cgi?id=7713&action=view Signed-off-by:
Dave Jones <davej@redhat.com> Signed-off-by:
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Vitaly Bordug authored
This has the relevant updates/additions to the BSP code so that proper platform_info struct well be passed to the CPM UART drivers. The changes covered mpc866ads, mpc885ads and mpc8272ads. Signed-off-by:
Vitaly Bordug <vbordug@ru.mvista.com> Signed-off-by:
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Vitaly Bordug authored
This consists of offsets fix in ..._devices.c, and update of ppc_sys_fixup_mem_resource() function to prevent subsequent fixups Signed-off-by:
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Andreas Schwab authored
Wire up *at syscalls. This patch has been tested on ppc64 (using glibc's testsuite, both 32bit and 64bit), and compile-tested for ppc32 (I have currently no ppc32 system available, but I expect no problems). Signed-off-by:
Andreas Schwab <schwab@suse.de> Signed-off-by:
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Eugene Surovegin authored
This patch adds workaround for PPC 440GX erratum 440_43. According to this erratum spurious MachineChecks (caused by L1 cache parity) can happen during DataTLB miss processing. We disable L1 cache parity checking for 440GX rev.C and rev.F Signed-off-by:
Eugene Surovegin <ebs@ebshome.net> Signed-off-by:
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David Woodhouse authored
Some people report that we die on some Macs when we are expecting to catch machine checks after poking at some random I/O address. I'd seen it happen on my dual G4 with serial ports until we fixed those to use OF, but now other users are reporting it with i8042. This expands the use of check_legacy_ioport() to avoid that situation even on 32-bit kernels. Signed-off-by:
David Woodhouse <dwmw2@infradead.org> Signed-off-by:
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Alan Modra authored
Normally, ppc64 module .ko files contain a table-of-contents (.toc) section, but if the module doesn't reference any static or external data or external procedures, it is possible for gcc/binutils to generate a .ko that doesn't have a .toc. Currently the module loader refuses to load such a module, since it needs the address of the .toc section to use in relocations. This patch fixes the problem by using the address of the .stubs section instead, which is an acceptable substitute in this situation. Signed-off-by: -
Paul Mackerras authored
This adds code to call a new firmware method to tell the firmware what machines and capabilities (such as VMX/Altivec) we support. This will be needed on POWER5+ and POWER6 machines, and it has no effect on past and current machines. Signed-off-by: -
David Gibson authored
At present, ARCH=powerpc kernels can waste considerable space in pagetables when making large hugepage mappings. Hugepage PTEs go in PMD pages, but each PMD page maps 256M and so contains only 16 hugepage PTEs (128 bytes of data), but takes up a 1024 byte allocation. With CONFIG_PPC_64K_PAGES enabled (64k base page size), the situation is worse. Now hugepage PTEs are at the PTE page level (also mapping 256M), so we store 16 hugepage PTEs in a 64k allocation. The PowerPC MMU already means that any 256M region is either all hugepage, or all normal pages. Thus, with some care, we can use a different allocation for the hugepage PTE tables and only allocate the 128 bytes necessary. Signed-off-by:
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- Apr 27, 2006
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Jes Sorensen authored
Update SN2 defconfig to latest kernel and add QLA FC drivers commonly found in SN2 boxes. Signed-off-by:
Jes Sorensen <jes@sgi.com> Signed-off-by:
Tony Luck <tony.luck@intel.com>
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Russ Anderson authored
When the mca recovery code encounters a condition that makes the MCA non-recoverable, print the reason it could not recover. This will make it easier to identify why the recovery code did not recover. Signed-off-by:
Russ Anderson <rja@sgi.com> Signed-off-by:
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