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2008-01-02[POWERPC] Fix build failure on Cell when CONFIG_SPU_FS=yPaul Mackerras
Commit aed3a8c9bb1a8623a618232087c5ff62718e3b9a introduced a definition of notify_spus_active in .../cell/spu_syscalls.c, and another definition under #ifndef MODULE in .../cell/spufs/sched.c. The latter is not necessary and causes the build to fail when CONFIG_SPU_FS=y, so this removes it. It also removes the export of do_notify_spus_active, which is unnecessary. Signed-off-by: Paul Mackerras <paulus@samba.org> Acked-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Jeremy Kerr <jk@ozlabs.org>
2007-12-28[POWERPC] PS3: Fix printing of os-area magic numbersGeoff Levand
Fix a bug in the printing of the os-area magic numbers which assumed that magic numbers were zero terminated strings. The magic numbers are represented in memory as integers. If the os-area sections are not initialized correctly they could contained random data that would be printed to the display. Also unify the handling of header and db magic numbers and make both of type array of u8. Signed-off-by: Geoff Levand <geoffrey.levand@am.sony.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-12-28[POWERPC] Oprofile: Remove dependency on spufs moduleBob Nelson
This removes an OProfile dependency on the spufs module. This dependency was causing a problem for multiplatform systems that are built with support for Oprofile on Cell but try to load the oprofile module on a non-Cell system. Signed-off-by: Bob Nelson <rrnelson@us.ibm.com> Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com> Acked-by: Jeremy Kerr <jk@ozlabs.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-12-14Merge branch 'for-2.6.24' of ↵Paul Mackerras
master.kernel.org:/pub/scm/linux/kernel/git/galak/powerpc into merge
2007-12-14[POWERPC] Make PS3_SYS_MANAGER default y, not mMichael Ellerman
Currently it's impossible to build a ps3_defconfig which will reboot without modules installed. This makes it all too easy to find yourself with a PS3 that won't reboot. This is because the system manager driver, which provides the reboot mechanism, is only selectable if PS3_ADVANCED is set, else it defaults to m. In ps3_defconfig PS3_ADVANCED is not set, therefore the system manager is built as a module. It would be desirable IMHO for the defconfig to produce a kernel that boots and reboots, without needing modules to be installed. Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Acked-by: Geoff Levand <geoffrey.levand@am.sony.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-12-13[POWERPC] Fix rounding bug in emulation for double float operatingLiu Yu
This patch fixes rounding bug in emulation for double float operating on PowerPC platform. When pack double float operand, it need to truncate the tail due to the limited precision. If the truncated part is not zero, the last bit of work bit (totally 3 bits) need to '|' 1. This patch is completed in _FP_FRAC_SRS_2(X,N,sz) (arch/powerpc/math-emu/op-2.h). Originally the code leftwards rotates the operand to just keep the truncated part, then check whether it is zero. However, the number it rotates is not correct when N is not smaller than _FP_W_TYPE_SIZE, and it will cause the work bit '|' 1 in the improper case. This patch fixes this issue. Signed-off-by: Liu Yu <b13201@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2007-12-14[POWERPC] iSeries: don't printk with HV spinlock heldStephen Rothwell
Printk was observed to hang during module unload due to a limited window of characters that may be sent to the hypervisor. The window only reexpands when we receive an ack from the HV and the spinlock here prevents us from ever processing that ack. This fixes it by dropping the lock before doing the printk, then looping back to the top to reacquire the lock. Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-12-13[POWERPC] 82xx: mpc8272ads, pq2fads: Update defconfig with ↵Scott Wood
CONFIG_FS_ENET_MDIO_FCC This was recently made configurable, and needs to be set for these boards. Signed-off-by: Scott Wood <scottwood@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2007-12-13[POWRPC] CPM2: Eliminate section mismatch warning in cpm2_reset().Scott Wood
Signed-off-by: Scott Wood <scottwood@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2007-12-13[POWERPC] Kill non-existent symbols from ksyms and commproc.hJochen Friedrich
Remove exports of __res and cpm_install_handler/cpm_free_handler. Remove cpm_install_handler/cpm_free_handler from the commproc.h as well. Both were used for ARCH=ppc and aren't defined for ARCH=powerpc. CC arch/powerpc/kernel/ppc_ksyms.o arch/powerpc/kernel/ppc_ksyms.c:180: error: '__res' undeclared here (not in a function) arch/powerpc/kernel/ppc_ksyms.c:180: warning: type defaults to 'int' in declaration of '__res' make[1]: *** [arch/powerpc/kernel/ppc_ksyms.o] Error 1 make: *** [arch/powerpc/kernel] Error 2 LD .tmp_vmlinux1 arch/powerpc/kernel/built-in.o:(__ksymtab+0x198): undefined reference to `cpm_free_handler' arch/powerpc/kernel/built-in.o:(__ksymtab+0x1a0): undefined reference to `cpm_install_handler' make: *** [.tmp_vmlinux1] Error 1 Signed-off-by: Jochen Friedrich <jochen@scram.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Vitaly Bordug <vitb@kernel.crashing.org> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2007-12-10powerpc: Fix IDE legacy vs. native fixupsBenjamin Herrenschmidt
PowerMac and CHRP/BriQ platforms have quirks to switch some IDE controllers from legacy mode to fully native mode. Those quirks however will not work properly anymore due to a change to the generic code to better handle legacy IDE resources. This fixes it by moving those quirk to "early" quirks (so they run before resources are probed for the devices) and clearing all BARs after the conversion to force a reallocation of sane values. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Acked-by: Alan Cox <alan@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-12-07ibm_newemac: Cleanup/fix support for STACR register variantsBenjamin Herrenschmidt
There are a few variants of the STACR register that affect more than just the "AXON" version of EMAC. Replace the current test of various chip models with tests for generic properties in the device-tree. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Acked-by: Stefan Roese <sr@denx.de> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-12-07ibm_newemac: Cleanup/Fix RGMII MDIO support detectionBenjamin Herrenschmidt
More than just "AXON" version of EMAC RGMII supports MDIO, so replace the current test with a generic property in the device-tree that indicates such support. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Acked-by: Stefan Roese <sr@denx.de> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-12-06Merge branch 'merge' of ↵Linus Torvalds
master.kernel.org:/pub/scm/linux/kernel/git/paulus/powerpc * 'merge' of master.kernel.org:/pub/scm/linux/kernel/git/paulus/powerpc: [POWERPC] virtex bug fix: Use canonical value for AC97 interrupt xparams [POWERPC] Update defconfigs [POWERPC] PS3: Update ps3_defconfig [POWERPC] Update iseries_defconfig [POWERPC] Fix hardware IRQ time accounting problem.
2007-12-06[POWERPC] Fix swapper_pg_dir size when CONFIG_PTE_64BIT=y on FSL_BOOKEKumar Gala
The size of swapper_pg_dir is 8k instead of 4k when using 64-bit PTEs (CONFIG_PTE_64BIT). This was reported by Cedric Hombourger <chombourger@gmail.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2007-12-06[POWERPC] Update defconfigsPaul Mackerras
This updates all the defconfigs in arch/powerpc/configs except iseries and ps3, which were updated by the preceding commits. This mostly takes the defaults, except that I turned on tickless idle and high-resolution timers for everything, and turned off instrumentation support and "Fair group CPU scheduler" for the smaller/embedded platforms. Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-12-06[POWERPC] PS3: Update ps3_defconfigGeoff Levand
Update ps3_defconfig. Signed-off-by: Geoff Levand <geoffrey.levand@am.sony.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-12-06[POWERPC] Update iseries_defconfigStephen Rothwell
The notable changes here are the enabling of NO_HZ and HIGH_RES_TIMERS. Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-12-06[POWERPC] Fix hardware IRQ time accounting problem.Tony Breeds
The commit fa13a5a1f25f671d084d8884be96fc48d9b68275 (sched: restore deterministic CPU accounting on powerpc), unconditionally calls update_process_tick() in system context. In the deterministic accounting case this is the correct thing to do. However, in the non-deterministic accounting case we need to not do this, since doing this results in the time accounted as hardware irq time being artificially elevated. Also this collapses 2 consecutive '#ifdef CONFIG_VIRT_CPU_ACCOUNTING' checks in time.h into one for neatness. Signed-off-by: Tony Breeds <tony@bakeyournoodle.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-12-03Revert "[POWERPC] Fix RTAS os-term usage on kernel panic"Paul Mackerras
This reverts commit a2b51812a4dc5db09ab4d4638d4d8ed456e2457e. It turns out that this change caused some machines to fail to come back up when being rebooted, and generated an error in the hypervisor error log on some machines. The platform architecture (PAPR) is a little unclear on exactly when the RTAS ibm,os-term function should be called. Until that is clarified I'm reverting this commit. Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-11-29Fix boot problem with iSeries lacking hugepage supportMel Gorman
Ordinarily the size of a pageblock is determined at compile-time based on the hugepage size. On PPC64, the hugepage size is determined at runtime based on what is supported by the machine. With legacy machines such as iSeries that do not support hugepages, HPAGE_SHIFT is 0. This results in pageblock_order being set to -PAGE_SHIFT and a crash results shortly afterwards. This patch adds a function to select a sensible value for pageblock order by default when HUGETLB_PAGE_SIZE_VARIABLE is set. It checks that HPAGE_SHIFT is a sensible value before using the hugepage size; if it is not MAX_ORDER-1 is used. This is a fix for 2.6.24. Credit goes to Stephen Rothwell for identifying the bug and testing candidate patches. Additional credit goes to Andy Whitcroft for spotting a problem with respects to IA-64 before releasing. Additional credit to David Gibson for testing with the libhugetlbfs test suite. Signed-off-by: Mel Gorman <mel@csn.ul.ie> Tested-by: Stephen Rothwell <sfr@canb.auug.org.au> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Acked-by: Paul Mackerras <paulus@samba.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-11-20[POWERPC] 83xx: Update mpc8349emitx(gp) defconfig for USBGrant Likely
USB support for the 8349itx got added a while back; but the defconfig never got updated. This patch adds the appropriate USB config options to the defconfigs Signed-off-by: Grant Likely <grant.likely@secretlab.ca> CC: Scott Wood <scottwood@freescale.com> CC: Timur Tabi <timur@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2007-11-20[POWERPC] 83xx: Update mpc832x_rdb_defconfig to enable MMC-over-SPIAnton Vorontsov
Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2007-11-20[POWERPC] 83xx: MPC832x RDB - remove spidev stub, use mmc_spiAnton Vorontsov
mmc_spi has hit the mainline, so we can start using it. Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2007-11-20[POWERPC] 8xxx: MDS board RTC fixesKim Phillips
Now the rtc class ds1374 driver has been added, remove the old rtc driver hookup code, add rtc node to device trees, and turn on the new driver in the defconfigs. Signed-off-by: Kim Phillips <kim.phillips@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2007-11-20[POWERPC] Fix 8xx build breakage due to _tlbie changesBenjamin Herrenschmidt
My changes to _tlbie to fix 4xx unfortunately broke 8xx build in a couple of places. This fixes it. Spotted by Olof Johansson. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Vitaly Bordug <vitb@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-11-20Merge branch 'for-2.6.24' of ↵Paul Mackerras
master.kernel.org:/pub/scm/linux/kernel/git/galak/powerpc into merge
2007-11-19[POWERPC] Fix device tree interrupt map for Freescale ULI1575 boardsKumar Gala
The interrupt map for the PCI PHB that had the ULI1575 was not correct on the boards that have it. * 8544 DS: - Fix interrupt mask - Be explicit about use of INTA for on chip peripherals * 8572 DS/8641 HPCN: - Fix interrupt mask - Expand interrupt map for PCI slots to cover all functions - Be explicit about use of INTA for on chip peripherals Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2007-11-20[POWERPC] Fix possible division by zero in scaled time accountingMichael Neuling
If we get no user time and no system time allocated since the last account_system_vtime, the system to user time ratio estimate can end up dividing by zero. This was causing a problem noticed by Balbir Singh. Signed-off-by: Michael Neuling <mikey@neuling.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-11-20[POWERPC] spufs: Fix context destroy vs /spu readdir raceJeremy Kerr
We can currently cause an oops by repeatedly creating and destroying contexts, while doing getdents() calls on the "/spu" directory. This is due to the context's top-level dentry remaining hashed while the context is being destroyed. Fix this by unhashing the context's dentry with the dentry->d_inode->i_mutex held. This way, we'll hit the check for d_unhashed in dentry_readdir, and won't be included in the list of subdirs for /spu. test: spufs-testsuite:tests/01-spu_create/07-destroy-vs-readdir-race Signed-off-by: Jeremy Kerr <jk@ozlabs.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-11-20[POWERPC] Fix RTAS os-term usage on kernel panicLinas Vepstas
The rtas_os_term() routine was being called at the wrong time. The actual rtas call "os-term" will not ever return, and so calling it from the panic notifier is too early. Instead, call it from the machine_reset() call. This splits the rtas_os_term() routine into two: one part to capture the kernel panic message, invoked during the panic notifier, and another part that is invoked during machine_reset(). Prior to this patch, the os-term call was never being made, because panic_timeout was always non-zero. Calling os-term helps keep the hypervisor happy! We have to keep the hypervisor happy to avoid service, dump and error reporting problems. Signed-off-by: Linas Vepstas <linas@austin.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-11-19[POWERPC] 83xx: Handle mpc8360 rev. 2.1 RGMII timing erratumKim Phillips
If on a rev. 2.1, adjust UCC clock and data timing characteristics as specified in the rev.2.1 erratum #2. Signed-off-by: Kim Phillips <kim.phillips@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2007-11-19[POWERPC] 83xx: Fix 2nd UCC entry in mpc832x_mds.dtsKim Phillips
correct the reg property, remove duplicate io port entry, whitespace fixes. Thanks to Peter Van Ackeren for pointing this out. Signed-off-by: Kim Phillips <kim.phillips@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2007-11-19[POWERPC] 83xx: mpc832x mds: Fix board PHY reset codeKim Phillips
currently the board-level PHY reset code for the mpc832x MDS messes with reset configuration words source settings which is plain wrong (it looks like this board code was cut-n-pasted from the mpc8360 mds code, which has the PHY reset bits in a different BCSR); this patch points the PHY reset code to the proper mpc832x mds PHY reset bits in the BCSR. Signed-off-by: Peter Van Ackeren <peter.vanackeren@freescale.com> Signed-off-by: Kim Phillips <kim.phillips@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2007-11-19[POWERPC] Fix potential NULL dereferenceCyrill Gorcunov
This patch does fix potential NULL pointer dereference that could take place inside of strcmp() if of_get_property() call failed. Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2007-11-20[POWERPC] vdso: Fixes for cache block sizesOlof Johansson
The current VDSO implementation is hardcoded to 128 byte cache blocks, which are only used on IBM's 64-bit processors. Convert it to get the cache block sizes out of vdso_data instead, similar to how the ppc64 in-kernel cache flush does it. Signed-off-by: Olof Johansson <olof@lixom.net> Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-11-20Merge branch 'for-2.6.24' of ↵Paul Mackerras
master.kernel.org:/pub/scm/linux/kernel/git/olof/pasemi into merge
2007-11-19[POWERPC] pasemi: Don't reset mpic at bootOlof Johansson
Due to an erratum, we don't want to reset the mpic at boot time. It can sometimes cause problems with lost interrupts later on while running. Signed-off-by: Olof Johansson <olof@lixom.net>
2007-11-20Merge branch 'for-2.6.24' of ↵Paul Mackerras
master.kernel.org:/pub/scm/linux/kernel/git/jwboyer/powerpc-4xx into merge
2007-11-20[POWERPC] Fix build failure on legacy iSeriesKamalesh Babulal
Include <asm/iseries/hv_call.h> in arch/powerpc/mm/stab.c to fix the following compile error (found with randconfig): CC arch/powerpc/mm/stab.o arch/powerpc/mm/stab.c: In function "stab_initialize": arch/powerpc/mm/stab.c:282: error: implicit declaration of function "HvCall1" arch/powerpc/mm/stab.c:282: error: "HvCallBaseSetASR" undeclared (first use in this function) arch/powerpc/mm/stab.c:282: error: (Each undeclared identifier is reported only once arch/powerpc/mm/stab.c:282: error: for each function it appears in.) make[1]: *** [arch/powerpc/mm/stab.o] Error 1 make: *** [arch/powerpc/mm] Error 2 Signed-off-by: Kamalesh Babulal <kamalesh@linux.vnet.ibm.com> Acked-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-11-19[POWERPC] 4xx: UIC add mask_ack callbackValentine Barshak
This adds uic_mask_ack_irq() callback to PowerPC 4xx uic code to avoid kernel crash. It is used for edge-triggered interrupts by handle_uic_irq(). Signed-off-by: Valentine Barshak <vbarshak@ru.mvista.com> Acked-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
2007-11-19[POWERPC] 4xx: Replace #includes of asm/of_platform.h with linux/of_platform.h.Jon Loeliger
Signed-off-by: Jon Loeliger <jdl@freescale.com> Acked-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
2007-11-19[POWERPC] prpmc2800: Enable L2 cacheMark A. Greer
Turn on the L2 cache on the prpmc2800 platform. Signed-off-by: Mark A. Greer <mgreer@mvista.com Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-11-19[POWERPC] pSeries: make pseries_defconfig minus PCI build againStephen Rothwell
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Acked-by: Linas Vepstas <linas@austin.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-11-19[POWERPC] Fix multiple bugs in rtas_ibm_suspend_me codeNathan Lynch
There are several issues with the rtas_ibm_suspend_me code, which enables platform-assisted suspension of an LPAR as covered in PAPR 2.2. 1.) rtas_ibm_suspend_me uses on_each_cpu() to invoke rtas_percpu_suspend_me on all cpus via IPI: if (on_each_cpu(rtas_percpu_suspend_me, &data, 1, 0)) ... 'data' is on the calling task's stack, but rtas_ibm_suspend_me takes no measures to ensure that all instances of rtas_percpu_suspend_me are finished accessing 'data' before returning. This can result in the IPI'd cpus accessing random stack data and getting stuck in H_JOIN. This is addressed by using an atomic count of workers and a completion on the stack. 2.) rtas_percpu_suspend_me is needlessly calling H_JOIN in a loop. The only event that can cause a cpu to return from H_JOIN is an H_PROD from another cpu or a NMI/system reset. Each cpu need call H_JOIN only once per suspend operation. Remove the loop and the now unnecessary 'waiting' state variable. 3.) H_JOIN must be called with MSR[EE] off, but lazy interrupt disabling may cause the caller of rtas_ibm_suspend_me to call H_JOIN with it on; the local_irq_disable() in on_each_cpu() is not sufficient. Fix this by explicitly saving the MSR and clearing the EE bit before calling H_JOIN. 4.) H_PROD is being called with the Linux logical cpu number as the parameter, not the platform interrupt server value. (It's also being called for all possible cpus, which is harmless, but unnecessary.) This is fixed by calling H_PROD for each online cpu using get_hard_smp_processor_id(cpu) for the argument. Signed-off-by: Nathan Lynch <ntl@pobox.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-11-13[POWERPC] Silence an annoying boot messageStephen Rothwell
vmemmap_populate will printk (with KERN_WARNING) for a lot of pages if CONFIG_SPARSEMEM_VMEMMAP is enabled (at least it does on iSeries). Use pr_debug for it instead. Replace the only other use of DBG in this file with pr_debug as well. Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Acked-by: Olof Johansson <olof@lixom.net> Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-11-13[POWERPC] Fix early btext debug on PowerMacBenjamin Herrenschmidt
The early btext debug wouldn't work on PowerMac when booted from BootX due to the code looking for the wrong property name. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-11-13[POWERPC] Demote clockevent printk to KERN_DEBUGTony Breeds
These don't need to be seen by everyone on every boot. Signed-off-by: Tony Breeds <tony@bakeyournoodle.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-11-13[POWERPC] Fix CONFIG_SMP=n build error on ppc64Olof Johansson
The patch "KVM: fix !SMP build error" change the way smp_call_function() actually uses the passed in function names on non-SMP builds. So previously it was never caught that the function passed in was never actually defined. This causes a build error on ppc64_defconfig + CONFIG_SMP=n: arch/powerpc/mm/tlb_64.c: In function 'pgtable_free_now': arch/powerpc/mm/tlb_64.c:71: error: 'pte_free_smp_sync' undeclared (first use in this function) arch/powerpc/mm/tlb_64.c:71: error: (Each undeclared identifier is reported only once arch/powerpc/mm/tlb_64.c:71: error: for each function it appears in.) So we need to define it even if CONFIG_SMP is off. Either that or ifdef out the smp_call_function() call, but that's ugly. Signed-off-by: Olof Johansson <olof@lixom.net> Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-11-13[POWERPC] Avoid unpaired stwcx. on some processorsBecky Bruce
The context switch code in the kernel issues a dummy stwcx. to clear the reservation, as recommended by the architecture. However, some processors can have issues if this stwcx to address A occurs while the reservation is already held to a different address B. To avoid this problem, the dummy stwcx. needs to be paired with a dummy lwarx to the same address. This adds the dummy lwarx, and creates a cpu feature bit to indicate which cpus are affected. Tested on mpc8641_hpcn_defconfig in arch/powerpc; build tested in arch/ppc. Signed-off-by: Becky Bruce <becky.bruce@freescale.com> Signed-off-by: Paul Mackerras <paulus@samba.org>