- 16 Oct, 2007 40 commits
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Jeff Dike authored
Before the removal of tt mode, access to a register on the skas-mode side of a pt_regs struct looked like pt_regs.regs.skas.regs.regs[FOO]. This was bad enough, but it became pt_regs.regs.regs.regs[FOO] with the removal of the union from the middle. To get rid of the run of three "regs", the last field is renamed to "gp". Signed-off-by:
Jeff Dike <jdike@linux.intel.com> Signed-off-by:
Andrew Morton <akpm@linux-foundation.org> Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org>
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Jeff Dike authored
This patch folds mmu_context_skas into struct mm_context, changing all users of these structures as needed. Signed-off-by:
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Jeff Dike authored
do_longjmp used to be needed when UML didn't have its own implementation of setjmp and longjmp. They came from libc, and couldn't be called directly from kernel code, as the libc jmp_buf couldn't be imported there. do_longjmp was a userspace function which served to provide longjmp access to kernel code. This is gone, and a number of void * pointers can now be jmp_buf *. Signed-off-by:
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Jeff Dike authored
Eliminate some uses of __u64 in the physical memory support. It's hard to get a definition of __u64 in both kernel and userspace code on x86_64, so this changes them to unsigned long long. There are also a copyright update and formatting comment removal from the affected header. Signed-off-by:
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Jeff Dike authored
Formatting changes in the files which have been changed in the course of folding foo_skas functions into their callers. These include: copyright updates header file trimming style fixes adding severity to printks These changes should be entirely non-functional. Signed-off-by:
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Jeff Dike authored
This patch makes a number of simplifications enabled by the removal of CHOOSE_MODE. There were lots of functions that looked like int foo(args){ foo_skas(args); } The bodies of foo_skas are now folded into foo, and their declarations (and sometimes entire header files) are deleted. In addition, the union uml_pt_regs, which was a union between the tt and skas register formats, is now a struct, with the tt-mode arm of the union being removed. It turns out that usr2_handler was unused, so it is gone. Signed-off-by: -
Jeff Dike authored
Formatting changes in the files which have been changed in the course of removing CHOOSE_MODE. These include: copyright updates header file trimming style fixes adding severity to printks These changes should be entirely non-functional. Signed-off-by:
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Jeff Dike authored
The next stage after removing code which depends on CONFIG_MODE_TT is removing the CHOOSE_MODE abstraction, which provided both compile-time and run-time branching to either tt-mode or skas-mode code. This patch removes choose-mode.h and all inclusions of it, and replaces all CHOOSE_MODE invocations with the skas branch. This leaves a number of trivial functions which will be dealt with in a later patch. There are some changes in the uaccess and tls support which go somewhat beyond this and eliminate some of the now-redundant functions. Signed-off-by:
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Jeff Dike authored
Formatting changes in the files which have been changed in the tt-removal patchset so far. These include: copyright updates header file trimming style fixes adding severity to printks indenting Kconfig help according to the predominant kernel style These changes should be entirely non-functional. Signed-off-by:
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Jeff Dike authored
This patch removes thread.h, which turns out not to be needed any more. Signed-off-by:
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Jeff Dike authored
This patchset throws out tt mode, which has been non-functional for a while. This is done in phases, interspersed with code cleanups on the affected files. The removal is done as follows: remove all code, config options, and files which depend on CONFIG_MODE_TT get rid of the CHOOSE_MODE macro, which decided whether to call tt-mode or skas-mode code, and replace invocations with their skas portions replace all now-trivial procedures with their skas equivalents There are now a bunch of now-redundant pieces of data structures, including mode-specific pieces of the thread structure, pt_regs, and mm_context. These are all replaced with their skas-specific contents. As part of the ongoing style compliance project, I made a style pass over all files that were changed. There are three such patches, one for each phase, covering the files affected by that phase but no later ones. I noticed that we weren't freeing the LDT state associated with a process when it exited, so that's fixed in one of the later patches. The last patch is a tidying patch which I've had for a while, but which caused inexplicable crashes under tt mode. Since that is no longer a problem, this can now go in. This patch: Start getting rid of tt mode support. This patch throws out CONFIG_MODE_TT and all config options, code, and files which depend on it. CONFIG_MODE_SKAS is gone and everything that depends on it is included unconditionally. The few changed lines are in re-written Kconfig help, lines which needed something skas-related removed from them, and a few more which weren't strictly deletions. Signed-off-by:
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Miklos Szeredi authored
Currently hostfs_getattr() just defines the default behavior. Signed-off-by:
Miklos Szeredi <mszeredi@suse.cz> Cc: Jeff Dike <jdike@addtoit.com> Signed-off-by:
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Jeff Dike authored
Added vde network backend in uml to introduce native Virtual Distributed Ethernet support (using libvdeplug). Signed-off-by:
Luca Bigliardi <shammash@artha.org> Signed-off-by:
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Jeff Dike authored
Tidying of the UML physical memory system. These are mostly style fixes, however the includes were cleaned as well. This uncovered a need for mem_user.h to be included in mode_kern_skas.h. Signed-off-by:
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Jeff Dike authored
Throw out a lot of code dealing with saving and restoring floating-point state. In skas mode, where processes run in a restoring floating-point state on kernel entry and exit is pointless. This eliminates most of arch/um/os-Linux/sys-{i386,x86_64}/registers.c. Most of what remained is now arch-indpendent, and can be moved up to arch/um/os-Linux/registers.c. Both arches need the jmp_buf accessor get_thread_reg, and i386 needs {save,restore}_fp_regs because it cheats during sigreturn by getting the fp state using ptrace rather than copying it out of the process sigcontext. After this, it turns out that arch/um/include/skas/mode-skas.h is almost completely unneeded. The declarations in it are variables which either don't exist or which don't have global scope. The one exception is kill_off_processes_skas. If that's removed, this header can be deleted. This uncovered a bug in user.h, which wasn't correctly making sure that a size_t definition was available to both userspace and kernelspace files. Signed-off-by: -
Jeff Dike authored
Map all of physical memory as executable to avoid having to change stack protections during fork and exit. unprotect_stack is now called only from MODE_TT code, so it is marked as such. Signed-off-by:
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Jeff Dike authored
The UML watchdog driver was using the wrong config variable to control whether it can be unloaded once active. Signed-off-by:
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Jeff Dike authored
On some systems, with IPV6 configured, there is a clash between the kernel's in6addr_any and the one in libc. This is handled in the usual (gross) way of defining the kernel symbol out of the way on the gcc command line. Signed-off-by:
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Jeff Dike authored
Remove includes of asm/page.h from libc code. This header seems to be disappearing, and UML doesn't make much use of it anyway. The one use, PAGE_SHIFT in stub.h, is handled by copying the constant from the kernel side of the house in common_offsets.h. Signed-off-by:
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Jeff Dike authored
Tidy line.c: The includes are more minimal Lots of style fixes All the printks have severities Removed some commented-out code Deleted a useless printk when ioctl is called Fixed some whitespace damage Signed-off-by:
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Jeff Dike authored
The previous console cleanup patch switched generic_read and generic_write from calling os_{read,write}_file to calling read and write directly. Because the calling convention is different, they now need to get any error from errno rather than the return value. I did this for generic_read, but forgot about generic_write. While chasing some output corruption, I noticed that line_write was unnecessarily calling flush_buffer, and deleted it. I don't understand why, but the corruption disappeared. This is unneeded because there already is a perfectly good mechanism for finding out when the host output device has some room to write data - there is an interrupt that comes in when writes can happen again. line_write calling flush_buffer seemed to just be an attempt to opportunistically get some data out to the host. I also made write_chan short-circuit calling into the host-level code for zero-length writes. Calling libc write with a length of zero conflated write not being able to write anything with asking it not to write anything. Better to just cut it off as soon as possible. Signed-off-by: -
Jeff Dike authored
This does a lot of cleanup on the UML console system. This patch should be entirely non-functional. The tidying is as follows: header cleanups - the includes should be closer to minimal and complete all printks now have a severity lots of style fixes fd_close is restructured a little in order to reduce the nesting some functions were calling the os_* wrappers when they can call libc directly port_accept had a unnecessary variable it also tested a pid unecessarily before killing it some functions were made static xterm_free is gone, as it was identical to generic_free Signed-off-by:
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Jeff Dike authored
I messed up the error cleanup ordering in the console port driver. Signed-off-by:
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Jeff Dike authored
Now that the generic console operations are in a userspace file, we can do the following: directly call into libc instead of through the os_* wrappers eliminate os_window_size since it has only one user Signed-off-by:
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Jeff Dike authored
Move some code from a kernelspace file to a userspace file where it fits better. This enables some tidying which is the subject of a later patch. Signed-off-by:
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Alan Cox authored
Signed-off-by:
Alan Cox <alan@redhat.com> Cc: Mikael Starvik <starvik@axis.com> Signed-off-by:
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Thomas Gleixner authored
Signed-off-by:
Thomas Gleixner <tglx@linutronix.de> Cc: Mikael Starvik <starvik@axis.com> Signed-off-by:
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Christoph Hellwig authored
Convert m32r to the generic sys_ptrace. The conversion requires an architecture hook after ptrace_attach which this patch adds. The hook will also be needed for a conersion of ia64 to the generic ptrace code. Thanks to Hirokazu Takata for fixing a bug in the first version of this code. Signed-off-by:
Christoph Hellwig <hch@lst.de> Cc: Hirokazu Takata <takata@linux-m32r.org> Signed-off-by:
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Hirokazu Takata authored
Remove an unused symbol M32R_SIO_SHARE_IRQS from drivers/serial/m32r_sio.h. Signed-off-by:
Hirokazu Takata <takata@linux-m32r.org> Cc: "Robert P. J. Day" <rpjday@mindspring.com> Signed-off-by:
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Thomas Gleixner authored
Signed-off-by:
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Mariusz Kozlowski authored
Signed-off-by:
Mariusz Kozlowski <m.kozlowski@tuxland.pl> Cc: Hirokazu Takata <takata@linux-m32r.org> Signed-off-by:
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Sam Ravnborg authored
Introduced a consistent style in vmlinux.lds and it now matches the soon-to-be common style for all arch's vmlinux.lds files. In addition: - Replaced hardcoded constant with PAGE_SIZE - Fix page.h so PAGE_SIZE can be used from assembler and in lds files - Move a few labels inside brackets so linker alignment will not make label point ot a too low address - Replaced DWARF and STABS sections with definitions from asm-generic Signed-off-by:
Sam Ravnborg <sam@ravnborg.org> Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Cc: Richard Henderson <rth@twiddle.net> Signed-off-by:
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Christoph Hellwig authored
This patch converts alpha to the generic sys_ptrace. We use force_successful_syscall_return to avoid having to pass the pt_regs pointer down to the function. I think the removal of the assemly stub is correct, but I could only compile-test this patch, so please give it a spin before commiting :) Signed-off-by:
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Adrian Bunk authored
- binutils 2.7 is far below the current minimum supported version, and there's therefore no longer a need for an extra test - since even gcc 3.2 already supports all options used we can use them unconditionally Signed-off-by:
Adrian Bunk <bunk@stusta.de> Cc: Richard Henderson <rth@twiddle.net> Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Signed-off-by:
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Greg Ungerer authored
Remove unused config symbol CONFIG_DISKtel. Pointed out by Robert P. J. Day <rpjday@mindspring.com>. Signed-off-by:
Greg Ungerer <gerg@uclinux.org> Signed-off-by:
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Thomas Gleixner authored
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Mariusz Kozlowski authored
Signed-off-by:
David Howells <dhowells@redhat.com> Signed-off-by:
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Benjamin Herrenschmidt authored
frv is the last user in the tree of that dubious hook, and it's my understanding that it's not even needed. It's only called by memory.c free_pgd_range() which is always called within an mmu_gather, and tlb_flush() on frv will do a flush_tlb_mm(), which from my reading of the code, seems to do what flush_tlb_ptables() does, which is to clear the cached PGE. Signed-off-by:
Benjamin Herrenschmidt <benh@kernel.crashing.org> Acked-By:
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Lee Schermerhorn authored
Add a per node state sysfs class attribute file to /sys/devices/system/node to display node state masks. E.g., on a 4-cell HP ia64 NUMA platform, we have 5 nodes: 4 representing the actual hardware cells and one memory-only pseudo-node representing a small amount [512MB] of "hardware interleaved" memory. With this patch, in /sys/devices/system/node we see: #ls -1F /sys/devices/system/node has_cpu has_normal_memory node0/ node1/ node2/ node3/ node4/ online possible #cat /sys/devices/system/node/possible 0-255 #cat /sys/devices/system/node/online 0-4 #cat /sys/devices/system/node/has_normal_memory 0-4 #cat /sys/devices/system/node/has_cpu 0-3 Signed-off-by:
Lee Schermerhorn <lee.schermerhorn@hp.com> Acked-by:
Christoph Lameter <clameter@sgi.com> Signed-off-by:
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Adrian Bunk authored
This patch contains the following cleanups: - make the needlessly global setup_vmstat() static - remove the unused refresh_vm_stats() Signed-off-by:
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