aboutsummaryrefslogtreecommitdiffstats
path: root/arch
Commit message (Collapse)AuthorAge
* microblaze: Support word copying in copy_tofrom_userMichal Simek2010-04-01
| | | | | | | | Word copying is used only for aligned addresses. Here is space for improving to use any better copying technique. Look at memcpy implementation. Signed-off-by: Michal Simek <monstr@monstr.eu>
* microblaze: Print early printk information to log bufferMichal Simek2010-04-01
| | | | | | | If early printk console is not enabled then all messages are written to log buffer. Signed-off-by: Michal Simek <monstr@monstr.eu>
* microblaze: head.S typo fixMichal Simek2010-04-01
| | | | | | I forget to change register name in comments. Signed-off-by: Michal Simek <monstr@monstr.eu>
* microblaze: Use MICROBLAZE_TLB_SIZE in asm codeMichal Simek2010-04-01
| | | | | | | TLB size was hardcoded in asm code. This patch brings ability to change TLB size only in one place. (mmu.h). Signed-off-by: Michal Simek <monstr@monstr.eu>
* microblaze: Kconfig Fix - pciMichal Simek2010-04-01
| | | | | | I forget to remove pci Kconfig option. Signed-off-by: Michal Simek <monstr@monstr.eu>
* microblaze: Adding likely macrosMichal Simek2010-04-01
| | | | | | | On the base on GCOV analytics is helpful to add likely/unlikely macros. Signed-off-by: Michal Simek <monstr@monstr.eu>
* microblaze: Add .type and .size to ASM functionsMichal Simek2010-04-01
| | | | | | Cachegrind analysis need this fix to be able to log asm functions. Signed-off-by: Michal Simek <monstr@monstr.eu>
* microblaze: Fix TLB macrosMichal Simek2010-04-01
| | | | | | To be able to do trace TLB operations. Signed-off-by: Michal Simek <monstr@monstr.eu>
* microblaze: Use instruction with delay slotMichal Simek2010-04-01
| | | | | | Sync labels. Signed-off-by: Michal Simek <monstr@monstr.eu>
* microblaze: Remove additional resr and rear loadingMichal Simek2010-04-01
| | | | | | RESR and REAR uses the same regs in whole file. Signed-off-by: Michal Simek <monstr@monstr.eu>
* microblaze: Change register usage for ESR and EARMichal Simek2010-04-01
| | | | | | | | This change synchronize register usage in code. ESR = R4 EAR = R3 Signed-off-by: Michal Simek <monstr@monstr.eu>
* microblaze: Prepare work for optimization in exception codeMichal Simek2010-04-01
| | | | | | Any sync branch must follow mts instructions not mfs. Signed-off-by: Michal Simek <monstr@monstr.eu>
* microblaze: Add DEBUG optionMichal Simek2010-04-01
| | | | | | Disable debug option in asm code. Signed-off-by: Michal Simek <monstr@monstr.eu>
* microblaze: Support systems without lmb bramMichal Simek2010-04-01
| | | | | | | | | | | | | | | | | | | | When the system has no lmb bram, main memory should be start from zero because of microblaze vectors. DTS fragment could look like: DDR2_SDRAM: memory@0 { device_type = "memory"; reg = < 0x0 0x10000000 >; } ; Then you have to setup CONFIG_KERNEL_BASE_ADDR=0 which caused that kernel physical start address will be zero. On reset vector place will be jump to 0x100 and on 0x100 starts kernel text. You have to solve how to load the kernel before cpu starts. Tested with XMD. Signed-off-by: Michal Simek <monstr@monstr.eu>
* microblaze: uaccess: Sync strlen, strnlen, copy_to/from_userMichal Simek2010-04-01
| | | | | | Last sync. Signed-off-by: Michal Simek <monstr@monstr.eu>
* microblaze: uaccess: Unify __copy_tofrom_userMichal Simek2010-04-01
| | | | | | Move to generic location. Signed-off-by: Michal Simek <monstr@monstr.eu>
* microblaze: uaccess: Move functions to generic locationMichal Simek2010-04-01
| | | | | | noMMU and MMU use them. Signed-off-by: Michal Simek <monstr@monstr.eu>
* microblaze: uaccess: Fix put_user for noMMUMichal Simek2010-04-01
| | | | | | | | Here is small regression on dhrystone tests and I think that on all benchmarking tests. It is due to better checking mechanism in put_user macro Signed-off-by: Michal Simek <monstr@monstr.eu>
* microblaze: uaccess: Fix get_user macro for noMMUMichal Simek2010-04-01
| | | | | | Use unified version. Signed-off-by: Michal Simek <monstr@monstr.eu>
* microblaze: uaccess: fix clear_user for noMMU kernelMichal Simek2010-04-01
| | | | | | | Previous patches fixed only MMU version and this is the first patch for noMMU kernel Signed-off-by: Michal Simek <monstr@monstr.eu>
* microblaze: uaccess: Fix strncpy_from_user functionMichal Simek2010-04-01
| | | | | | Generic implementation for noMMU and MMU version Signed-off-by: Michal Simek <monstr@monstr.eu>
* microblaze: uaccess: fix copy_from_user macroMichal Simek2010-04-01
| | | | | | copy_from_user macro also use copy_tofrom_user function Signed-off-by: Michal Simek <monstr@monstr.eu>
* microblaze: uaccess: copy_to_user unificationMichal Simek2010-04-01
| | | | | | | noMMU and MMU kernel will use copy copy_tofrom_user asm implementation. Signed-off-by: Michal Simek <monstr@monstr.eu>
* microblaze: uaccess: sync put/get/clear_user macrosMichal Simek2010-04-01
| | | | | | Add macro description and resort. Signed-off-by: Michal Simek <monstr@monstr.eu>
* microblaze: uaccess: fix put_user and get_user macrosMichal Simek2010-04-01
| | | | | | Use FIXUP macros and resort them. Signed-off-by: Michal Simek <monstr@monstr.eu>
* microblaze: uaccess: fix __get_user_asm macroMichal Simek2010-04-01
| | | | | | It is used __FIXUP_SECTION and __EX_TABLE_SECTION macros. Signed-off-by: Michal Simek <monstr@monstr.eu>
* microblaze: uaccess: fix clean user macroMichal Simek2010-04-01
| | | | | | | | This is the first patch which does uaccess unification. I choosed to do several patches to be able to use bisect in future if any fault happens. Signed-off-by: Michal Simek <monstr@monstr.eu>
* microblaze: move noMMU __range_ok function to uaccess.hMichal Simek2010-04-01
| | | | | | | The same noMMU and MMU functions should be placed in one file. Signed-off-by: Michal Simek <monstr@monstr.eu>
* microblaze: Move exception_table_entry upwardMichal Simek2010-04-01
| | | | | | Just sort to be able remove whole block. Signed-off-by: Michal Simek <monstr@monstr.eu>
* microblaze: Remove segment.hMichal Simek2010-04-01
| | | | | | | I would like to use asm-generic uaccess.h where are segment macros defined. This is just first step. Signed-off-by: Michal Simek <monstr@monstr.eu>
* microblaze: Remove memset in free_init_pagesMichal Simek2010-04-01
| | | | | | We don't need to do it. Signed-off-by: Michal Simek <monstr@monstr.eu>
* microblaze: Makefile cleanupsArun Bhanu2010-04-01
| | | | | | | | | | | | If CONFIG_INITRAMFS_SOURCE is set, "scripts/gen_initramfs_list.sh" checks if the cpio image exists. Remove the duplicate check from the Makefile. Remove the "clean-kernel" variable which is unused in the Makefile and is not used by the Kbuild. Signed-off-by: Arun Bhanu <arun@bhanu.net> Signed-off-by: Michal Simek <monstr@monstr.eu>
* microblaze: Fix Makefile to delete build generated filesArun Bhanu2010-04-01
| | | | | | | | | | | | | | | | | 'make clean' does not to delete the following build generated file: arch/microblaze/boot/linux.bin.ub 'make mrproper' does not to delete the following build generated files: arch/microblaze/boot/simpleImage.* Fix the Makefile to delete these build generated files. See [1] for a discussion on why simpleImage.* files are deleted with 'make mrproper' and not with 'make clean'. [1] http://lkml.org/lkml/2010/3/12/96 Signed-off-by: Arun Bhanu <arun@bhanu.net> Signed-off-by: Michal Simek <monstr@monstr.eu>
* microblaze: Add a missing single quote to make 'make help' happyArun Bhanu2010-04-01
| | | | | | | | | | | | 'make ARCH=microblaze help' fails with the following error due to a missing single quote. /bin/sh: -c: line 0: unexpected EOF while looking for matching `'' /bin/sh: -c: line 1: syntax error: unexpected end of file make: *** [help] Error 2 Signed-off-by: Arun Bhanu <arun@bhanu.net> Signed-off-by: Michal Simek <monstr@monstr.eu>
* microblaze: Fix "kstack=" parsingSteven J. Magnani2010-04-01
| | | | | | | | The "kstack=" command line parameter is not parsed correctly. All proper values are interpreted as zero. Signed-off-by: Steven J. Magnani <steve@digidescorp.com> Signed-off-by: Michal Simek <monstr@monstr.eu>
* Merge branch 'x86-fixes-for-linus' of ↵Linus Torvalds2010-03-30
|\ | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/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: Do not free zero sized per cpu areas x86: Make sure free_init_pages() frees pages on page boundary x86: Make smp_locks end with page alignment
| * x86: Make sure free_init_pages() frees pages on page boundaryYinghai Lu2010-03-29
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When CONFIG_NO_BOOTMEM=y, it could use memory more effiently, or in a more compact fashion. Example: Allocated new RAMDISK: 00ec2000 - 0248ce57 Move RAMDISK from 000000002ea04000 - 000000002ffcee56 to 00ec2000 - 0248ce56 The new RAMDISK's end is not page aligned. Last page could be shared with other users. When free_init_pages are called for initrd or .init, the page could be freed and we could corrupt other data. code segment in free_init_pages(): | for (; addr < end; addr += PAGE_SIZE) { | ClearPageReserved(virt_to_page(addr)); | init_page_count(virt_to_page(addr)); | memset((void *)(addr & ~(PAGE_SIZE-1)), | POISON_FREE_INITMEM, PAGE_SIZE); | free_page(addr); | totalram_pages++; | } last half page could be used as one whole free page. So page align the boundaries. -v2: make the original initramdisk to be aligned, according to Johannes, otherwise we have the chance to lose one page. we still need to keep initrd_end not aligned, otherwise it could confuse decompressor. -v3: change to WARN_ON instead, suggested by Johannes. -v4: use PAGE_ALIGN, suggested by Johannes. We may fix that macro name later to PAGE_ALIGN_UP, and PAGE_ALIGN_DOWN Add comments about assuming ramdisk start is aligned in relocate_initrd(), change to re get ramdisk_image instead of save it to make diff smaller. Add warning for wrong range, suggested by Johannes. -v6: remove one WARN() We need to align beginning in free_init_pages() do not copy more than ramdisk_size, noticed by Johannes Reported-by: Stanislaw Gruszka <sgruszka@redhat.com> Tested-by: Stanislaw Gruszka <sgruszka@redhat.com> Signed-off-by: Yinghai Lu <yinghai@kernel.org> Acked-by: Johannes Weiner <hannes@cmpxchg.org> Cc: David Miller <davem@davemloft.net> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> LKML-Reference: <1269830604-26214-3-git-send-email-yinghai@kernel.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * x86: Make smp_locks end with page alignmentYinghai Lu2010-03-29
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Fix: ------------[ cut here ]------------ WARNING: at arch/x86/mm/init.c:342 free_init_pages+0x4c/0xfa() free_init_pages: range [0x40daf000, 0x40db5c24] is not aligned Modules linked in: Pid: 0, comm: swapper Not tainted 2.6.34-rc2-tip-03946-g4f16b23-dirty #50 Call Trace: [<40232e9f>] warn_slowpath_common+0x65/0x7c [<4021c9f0>] ? free_init_pages+0x4c/0xfa [<40881434>] ? _etext+0x0/0x24 [<40232eea>] warn_slowpath_fmt+0x24/0x27 [<4021c9f0>] free_init_pages+0x4c/0xfa [<40881434>] ? _etext+0x0/0x24 [<40d3f4bd>] alternative_instructions+0xf6/0x100 [<40d3fe4f>] check_bugs+0xbd/0xbf [<40d398a7>] start_kernel+0x2d5/0x2e4 [<40d390ce>] i386_start_kernel+0xce/0xd5 ---[ end trace 4eaa2a86a8e2da22 ]--- Comments in vmlinux.lds.S already said: | /* | * smp_locks might be freed after init | * start/end must be page aligned | */ Signed-off-by: Yinghai Lu <yinghai@kernel.org> Acked-by: Johannes Weiner <hannes@cmpxchg.org> Cc: David Miller <davem@davemloft.net> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> LKML-Reference: <1269830604-26214-2-git-send-email-yinghai@kernel.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* | Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6Linus Torvalds2010-03-29
|\ \ | | | | | | | | | | | | | | | | | | * git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6: sparc64: Properly truncate pt_regs framepointer in perf callback. arch/sparc/kernel: Use set_cpus_allowed_ptr sparc: Fix use of uid16_t and gid16_t in asm/stat.h
| * | sparc64: Properly truncate pt_regs framepointer in perf callback.David S. Miller2010-03-29
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | For 32-bit processes, we save the full 64-bits of the regs in pt_regs. But unlike when the userspace actually does load and store instructions, the top 32-bits don't get automatically truncated by the cpu in kernel mode (because the kernel doesn't execute with PSTATE_AM address masking enabled). So we have to do it by hand. Reported-by: Frederic Weisbecker <fweisbec@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | arch/sparc/kernel: Use set_cpus_allowed_ptrJulia Lawall2010-03-28
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Use set_cpus_allowed_ptr rather than set_cpus_allowed. The semantic patch that makes this change is as follows: (http://coccinelle.lip6.fr/) // <smpl> @@ expression E1,E2; @@ - set_cpus_allowed(E1, cpumask_of_cpu(E2)) + set_cpus_allowed_ptr(E1, cpumask_of(E2)) @@ expression E; identifier I; @@ - set_cpus_allowed(E, I) + set_cpus_allowed_ptr(E, &I) // </smpl> Signed-off-by: Julia Lawall <julia@diku.dk> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | sparc: Fix use of uid16_t and gid16_t in asm/stat.hRob Landley2010-03-27
| | | | | | | | | | | | | | | Signed-off-by: Rob Landley <rob@landley.net> Signed-off-by: David S. Miller <davem@davemloft.net>
* | | frv/chris: fix lines with a missing semicolonsDavid Howells2010-03-29
| |/ |/| | | | | | | | | | | | | | | | | | | Commit b26b2d494b659f9 ("resource/PCI: align functions now return start of resource") added lines with missing semicolons. Add the missing semicolons to the FRV and CRIS arch code. Signed-off-by: David Howells <dhowells@redhat.com> Cc: linux@dominikbrodowski.net Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | Merge branch 'for-linus' of ↵Linus Torvalds2010-03-26
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6 * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6: x86/PCI: truncate _CRS windows with _LEN > _MAX - _MIN + 1 x86/PCI: for host bridge address space collisions, show conflicting resource frv/PCI: remove redundant warnings x86/PCI: remove redundant warnings PCI: don't say we claimed a resource if we failed PCI quirk: Disable MSI on VIA K8T890 systems PCI quirk: RS780/RS880: work around missing MSI initialization PCI quirk: only apply CX700 PCI bus parking quirk if external VT6212L is present PCI: complain about devices that seem to be broken PCI: print resources consistently with %pR PCI: make disabled window printk style match the enabled ones PCI: break out primary/secondary/subordinate for readability PCI: for address space collisions, show conflicting resource resources: add interfaces that return conflict information PCI: cleanup error return for pcix get and set mmrbc functions PCI: fix access of PCI_X_CMD by pcix get and set mmrbc functions PCI: kill off pci_register_set_vga_state() symbol export. PCI: fix return value from pcix_get_max_mmrbc()
| * | x86/PCI: truncate _CRS windows with _LEN > _MAX - _MIN + 1Bjorn Helgaas2010-03-25
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Yanko's GA-MA78GM-S2H (BIOS F11) reports the following resource in a PCI host bridge _CRS: [07] 32-Bit DWORD Address Space Resource Min Relocatability : MinFixed Max Relocatability : MaxFixed Address Minimum : CFF00000 (_MIN) Address Maximum : FEBFFFFF (_MAX) Address Length : 3EE10000 (_LEN) This is invalid per spec (ACPI 4.0, 6.4.3.5) because it's a fixed size, fixed location descriptor, but _LEN != _MAX - _MIN + 1. Based on https://bugzilla.kernel.org/show_bug.cgi?id=15480#c15, I think Windows handles this by truncating the window so it fits between _MIN and _MAX. I also verified this by modifying the SeaBIOS DSDT and booting Windows 2008 R2 with qemu. This patch makes Linux truncate the window, too, which fixes: http://bugzilla.kernel.org/show_bug.cgi?id=15480 Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com> Tested-by: Yanko Kaneti <yaneti@declera.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
| * | x86/PCI: for host bridge address space collisions, show conflicting resourceBjorn Helgaas2010-03-25
| | | | | | | | | | | | | | | | | | | | | | | | With insert_resource_conflict(), we can learn what the actual conflict is, so print that info for debugging purposes. Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
| * | frv/PCI: remove redundant warningsBjorn Helgaas2010-03-25
| | | | | | | | | | | | | | | | | | | | | | | | pci_claim_resource() already prints more detailed error messages, so these are really redundant. Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
| * | x86/PCI: remove redundant warningsBjorn Helgaas2010-03-25
| | | | | | | | | | | | | | | | | | | | | | | | pci_claim_resource() already prints more detailed error messages, so these are really redundant. Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
* | | Merge branch 'x86-fixes-for-linus' of ↵Linus Torvalds2010-03-26
|\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/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, amd: Restrict usage of c1e_idle() x86: Fix placement of FIX_OHCI1394_BASE x86: Handle legacy PIC interrupts on all the cpu's
| * | | x86, amd: Restrict usage of c1e_idle()Andreas Herrmann2010-03-19
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Currently c1e_idle returns true for all CPUs greater than or equal to family 0xf model 0x40. This covers too many CPUs. Meanwhile a respective erratum for the underlying problem was filed (#400). This patch adds the logic to check whether erratum #400 applies to a given CPU. Especially for CPUs where SMI/HW triggered C1e is not supported, c1e_idle() doesn't need to be used. We can check this by looking at the respective OSVW bit for erratum #400. Cc: <stable@kernel.org> # .32.x .33.x Signed-off-by: Andreas Herrmann <andreas.herrmann3@amd.com> LKML-Reference: <20100319110922.GA19614@alberich.amd.com> Signed-off-by: H. Peter Anvin <hpa@zytor.com>
generated by cgit v1.2.2 (git 2.25.0) at 2025-01-13 21:21:54 -0500