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2010-10-15arch/tile: parameterize system PLs to support KVM portChris Metcalf
While not a port to KVM (yet), this change modifies the kernel to be able to build either at PL1 or at PL2 with a suitable config switch. Pushing up this change avoids handling branch merge issues going forward with the KVM work. Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>
2010-10-15arch/tile: add Tilera's <arch/sim.h> header as an open-source headerChris Metcalf
This change adds one of the Tilera standard <arch> headers to the set of headers shipped with Linux. The <arch/sim.h> header provides methods for programmatically interacting with the Tilera simulator. The current <arch/sim.h> provides inline assembly for the _sim_syscall function, so the declaration and definition previously provided manually in Linux are no longer needed. We now use the standard sim_validate_lines_evicted() method from <arch/sim.h> rather than rolling our own direct call to sim_syscall(). Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>
2010-10-14arch/tile: Use <asm-generic/syscalls.h>Chris Metcalf
With this change we now include <asm-generic/syscalls.h> into the "tile" version of the header. To take full advantage of the prototypes there, we also change our naming convention for "struct pt_regs *" syscalls so that, e.g., _sys_execve() is the "true" syscall entry, which sets the appropriate register to point to the pt_regs before calling sys_execve(). While doing this I realized I no longer needed the fork and vfork entry point stubs, since those functions aren't in the generic syscall ABI, so I removed them as well. Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>
2010-08-13arch/tile: Various cleanups.Chris Metcalf
This change rolls up random cleanups not representing any actual bugs. - Remove a stale CONFIG_ value from the default tile_defconfig - Remove unused tns_atomic_xxx() family of methods from <asm/atomic.h> - Optimize get_order() using Tile's "clz" instruction - Fix a bad hypervisor upcall name (not currently used in Linux anyway) - Use __copy_in_user_inatomic() name for consistency, and export it - Export some additional hypervisor driver I/O upcalls and some homecache calls - Remove the obfuscating MEMCPY_TEST_WH64 support code - Other stray comment cleanups, #if 0 removal, etc. Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>
2010-08-13arch: tile: mm: pgtable.c: Removed duplicated #includeAndrea Gelmini
Signed-off-by: Andrea Gelmini <andrea.gelmini@gelma.net> Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>
2010-08-11arch/tile: support new kunmap_atomic() naming convention.Chris Metcalf
See commit 597781f3e51f48ef8e67be772196d9e9673752c4. Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>
2010-07-06arch/tile: Miscellaneous cleanup changes.Chris Metcalf
This commit is primarily changes caused by reviewing "sparse" and "checkpatch" output on our sources, so is somewhat noisy, since things like "printk() -> pr_err()" (or whatever) throughout the codebase tend to get tedious to read. Rather than trying to tease apart precisely which things changed due to which type of code review, this commit includes various cleanups in the code: - sparse: Add declarations in headers for globals. - sparse: Fix __user annotations. - sparse: Using gfp_t consistently instead of int. - sparse: removing functions not actually used. - checkpatch: Clean up printk() warnings by using pr_info(), etc.; also avoid partial-line printks except in bootup code. - checkpatch: Use exposed structs rather than typedefs. - checkpatch: Change some C99 comments to C89 comments. In addition, a couple of minor other changes are rolled in to this commit: - Add support for a "raise" instruction to cause SIGFPE, etc., to be raised. - Remove some compat code that is unnecessary when we fully eliminate some of the deprecated syscalls from the generic syscall ABI. - Update the tile_defconfig to reflect current config contents. Signed-off-by: Chris Metcalf <cmetcalf@tilera.com> Acked-by: Arnd Bergmann <arnd@arndb.de>
2010-06-04arch/tile: core support for Tilera 32-bit chips.Chris Metcalf
This change is the core kernel support for TILEPro and TILE64 chips. No driver support (except the console driver) is included yet. This includes the relevant Linux headers in asm/; the low-level low-level "Tile architecture" headers in arch/, which are shared with the hypervisor, etc., and are build-system agnostic; and the relevant hypervisor headers in hv/. Signed-off-by: Chris Metcalf <cmetcalf@tilera.com> Acked-by: Arnd Bergmann <arnd@arndb.de> Acked-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Reviewed-by: Paul Mundt <lethal@linux-sh.org>