- 11 4月, 2018 22 次提交
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由 Trond Myklebust 提交于
Move the delegation return out of generic code and down into the NFSv4 specific unlink code. Signed-off-by: NTrond Myklebust <trond.myklebust@primarydata.com> Signed-off-by: NAnna Schumaker <Anna.Schumaker@Netapp.com>
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由 Trond Myklebust 提交于
Move the delegation return out of generic code. Signed-off-by: NTrond Myklebust <trond.myklebust@primarydata.com> Signed-off-by: NAnna Schumaker <Anna.Schumaker@Netapp.com>
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由 Trond Myklebust 提交于
The 'fmode' argument can take an FMODE_EXEC value, which we want to filter out before comparing to the delegation type. Signed-off-by: NTrond Myklebust <trond.myklebust@primarydata.com> Signed-off-by: NAnna Schumaker <Anna.Schumaker@Netapp.com>
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由 Chuck Lever 提交于
Michal Kalderon has found some corner cases around device unload with active NFS mounts that I didn't have the imagination to test when xprtrdma device removal was added last year. - The ULP device removal handler is responsible for deallocating the PD. That wasn't clear to me initially, and my own testing suggested it was not necessary, but that is incorrect. - The transport destruction path can no longer assume that there is a valid ID. - When destroying a transport, ensure that ib_free_cq() is not invoked on a CQ that was already released. Reported-by: NMichal Kalderon <Michal.Kalderon@cavium.com> Fixes: bebd0318 ("xprtrdma: Support unplugging an HCA from ...") Signed-off-by: NChuck Lever <chuck.lever@oracle.com> Cc: stable@vger.kernel.org # v4.12+ Signed-off-by: NAnna Schumaker <Anna.Schumaker@Netapp.com>
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由 Jeff Layton 提交于
If we have a RECLAIM_COMPLETE with a populated cl_lock_waitq, then that implies that a reconnect has occurred. Since we can't expect a CB_NOTIFY_LOCK callback at that point, just wake up the entire queue so that all the tasks can re-poll for their locks. Signed-off-by: NJeff Layton <jlayton@redhat.com> Signed-off-by: NAnna Schumaker <Anna.Schumaker@Netapp.com>
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由 Jeff Layton 提交于
The task is expected to sleep for a while here, and it's possible that a new EXCHANGE_ID has occurred in the interim, and we were assigned a new clientid. Since this is a per-client list, there isn't a lot of value in vetting the clientid on the incoming request. Signed-off-by: NJeff Layton <jlayton@redhat.com> Signed-off-by: NAnna Schumaker <Anna.Schumaker@Netapp.com>
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由 Jeff Layton 提交于
We may get a notification and lose the race to another client. Ensure that we wait again for a notification in that case. Signed-off-by: NJeff Layton <jlayton@redhat.com> Signed-off-by: NAnna Schumaker <Anna.Schumaker@Netapp.com>
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由 Chuck Lever 提交于
This information can help track down local misconfiguration issues as well as network partitions and unresponsive servers. There are several ways to send a ping, and with transport multi- plexing, the exact rpc_xprt that is used is sometimes not known by the upper layer. The rpc_xprt pointer passed to the trace point call also has to be RCU-safe. I found a spot inside the client FSM where an rpc_xprt pointer is always available and safe to use. Suggested-by: NBill Baker <Bill.Baker@oracle.com> Signed-off-by: NChuck Lever <chuck.lever@oracle.com> Signed-off-by: NAnna Schumaker <Anna.Schumaker@Netapp.com>
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由 Chuck Lever 提交于
Introduce a low-overhead mechanism to report information about latencies of individual RPCs. The goal is to enable user space to filter the trace record for latency outliers, or build histograms, etc. Signed-off-by: NChuck Lever <chuck.lever@oracle.com> Signed-off-by: NAnna Schumaker <Anna.Schumaker@Netapp.com>
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由 Chuck Lever 提交于
Clean up: struct rpc_task carries a pointer to a struct rpc_clnt, and in fact task->tk_client is always what is passed into trace points that are already passing @task. Signed-off-by: NChuck Lever <chuck.lever@oracle.com> Signed-off-by: NAnna Schumaker <Anna.Schumaker@Netapp.com>
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由 Chuck Lever 提交于
If recording xprt->stat.max_slots is moved into xprt_alloc_slot, then xprt->num_reqs is never manipulated outside xprt->reserve_lock. There's no longer a need for xprt->num_reqs to be atomic. Signed-off-by: NChuck Lever <chuck.lever@oracle.com> Signed-off-by: NAnna Schumaker <Anna.Schumaker@Netapp.com>
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由 Chuck Lever 提交于
Some RPC transports have more overhead in their send_request callouts than others. For example, for RPC-over-RDMA: - Marshaling an RPC often has to DMA map the RPC arguments - Registration methods perform memory registration as part of marshaling To capture just server and network latencies more precisely: when sending a Call, capture the rq_xtime timestamp _after_ the transport header has been marshaled. Signed-off-by: NChuck Lever <chuck.lever@oracle.com> Signed-off-by: NAnna Schumaker <Anna.Schumaker@Netapp.com>
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由 Chuck Lever 提交于
Some RPC transports have more overhead in their reply handlers than others. For example, for RPC-over-RDMA: - RPC completion has to wait for memory invalidation, which is not a part of the server/network round trip - Recently a context switch was introduced into the reply handler, which further artificially inflates the measure of RPC RTT To capture just server and network latencies more precisely: when receiving a reply, compute the RTT as soon as the XID is recognized rather than at RPC completion time. Signed-off-by: NChuck Lever <chuck.lever@oracle.com> Signed-off-by: NAnna Schumaker <Anna.Schumaker@Netapp.com>
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由 Chuck Lever 提交于
Since commit 33849792 ("xprtrdma: Detect unreachable NFS/RDMA servers more reliably"), the xprtrdma transport now has a ->timer callout. But xprtrdma does not need to compute RTT data, only UDP needs that. Move the xprt_update_rtt call into the UDP transport implementation. Signed-off-by: NChuck Lever <chuck.lever@oracle.com> Signed-off-by: NAnna Schumaker <Anna.Schumaker@Netapp.com>
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由 Chuck Lever 提交于
Refactor: Both rpcrdma_create_req call sites have to allocate the buffer where the transport header is built, so just move that allocation into rpcrdma_create_req. This buffer is a fixed size. There's no needed information available in call_allocate that is not also available when the transport is created. The original purpose for allocating these buffers on demand was to reduce the possibility that an allocation failure during transport creation will hork the mount operation during low memory scenarios. Some relief for this rare possibility is coming up in the next few patches. Signed-off-by: NChuck Lever <chuck.lever@oracle.com> Signed-off-by: NAnna Schumaker <Anna.Schumaker@Netapp.com>
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由 Chuck Lever 提交于
With FRWR, the client transport can perform memory registration and post a Send with just a single ib_post_send. This reduces contention between the send_request path and the Send Completion handlers, and reduces the overhead of registering a chunk that has multiple segments. Signed-off-by: NChuck Lever <chuck.lever@oracle.com> Signed-off-by: NAnna Schumaker <Anna.Schumaker@Netapp.com>
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由 Chuck Lever 提交于
RPC-over-RDMA version 1 credit accounting relies on there being a response message for every RPC Call. This means that RPC procedures that have no reply will disrupt credit accounting, just in the same way as a retransmit would (since it is sent because no reply has arrived). Deal with the "no reply" case the same way. Signed-off-by: NChuck Lever <chuck.lever@oracle.com> Signed-off-by: NAnna Schumaker <Anna.Schumaker@Netapp.com>
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由 Chuck Lever 提交于
Create fewer MRs on average. Many workloads don't need as many as 32 MRs, and the transport can now quickly restock the MR free list. Signed-off-by: NChuck Lever <chuck.lever@oracle.com> Signed-off-by: NAnna Schumaker <Anna.Schumaker@Netapp.com>
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由 Chuck Lever 提交于
Currently, when the MR free list is exhausted during marshaling, the RPC/RDMA transport places the RPC task on the delayq, which forces a wait for HZ >> 2 before the marshal and send is retried. With this change, the transport now places such an RPC task on the pending queue, and wakes it just as soon as more MRs have been created. Creating more MRs typically takes less than a millisecond, and this waking mechanism is less deadlock-prone. Moreover, the waiting RPC task is holding the transport's write lock, which blocks the transport from sending RPCs. Therefore faster recovery from MR exhaustion is desirable. This is the same mechanism that the TCP transport utilizes when handling write buffer space exhaustion. Signed-off-by: NChuck Lever <chuck.lever@oracle.com> Signed-off-by: NAnna Schumaker <Anna.Schumaker@Netapp.com>
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由 Chuck Lever 提交于
Clean up: The generic rq_connect_cookie is sufficient to detect RPC Call retransmission. Signed-off-by: NChuck Lever <chuck.lever@oracle.com> Signed-off-by: NAnna Schumaker <Anna.Schumaker@Netapp.com>
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由 Chuck Lever 提交于
Clean up: We need to check only that the value does not exceed the range of the u8 field it's going into. Signed-off-by: NChuck Lever <chuck.lever@oracle.com> Signed-off-by: NAnna Schumaker <Anna.Schumaker@Netapp.com>
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由 Chuck Lever 提交于
With v4.15, on one of my NFS/RDMA clients I measured a nearly doubling in the latency of small read and write system calls. There was no change in server round trip time. The extra latency appears in the whole RPC execution path. "git bisect" settled on commit ccede759 ("xprtrdma: Spread reply processing over more CPUs") . After some experimentation, I found that leaving the WQ bound and allowing the scheduler to pick the dispatch CPU seems to eliminate the long latencies, and it does not introduce any new regressions. The fix is implemented by reverting only the part of commit ccede759 ("xprtrdma: Spread reply processing over more CPUs") that dispatches RPC replies specifically on the CPU where the matching RPC call was made. Interestingly, saving the CPU number and later queuing reply processing there was effective _only_ for a NFS READ and WRITE request. On my NUMA client, in-kernel RPC reply processing for asynchronous RPCs was dispatched on the same CPU where the RPC call was made, as expected. However synchronous RPCs seem to get their reply dispatched on some other CPU than where the call was placed, every time. Fixes: ccede759 ("xprtrdma: Spread reply processing over ... ") Signed-off-by: NChuck Lever <chuck.lever@oracle.com> Cc: stable@vger.kernel.org # v4.15+ Signed-off-by: NAnna Schumaker <Anna.Schumaker@Netapp.com>
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- 05 3月, 2018 6 次提交
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由 Linus Torvalds 提交于
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip由 Linus Torvalds 提交于
Pull x86 fixes from Thomas Gleixner: "A small set of fixes for x86: - Add missing instruction suffixes to assembly code so it can be compiled by newer GAS versions without warnings. - Switch refcount WARN exceptions to UD2 as we did in general - Make the reboot on Intel Edison platforms work - A small documentation update so text and sample command match" * 'x86/urgent' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: Documentation, x86, resctrl: Make text and sample command match x86/platform/intel-mid: Handle Intel Edison reboot correctly x86/asm: Add instruction suffixes to bitops x86/entry/64: Add instruction suffix x86/refcounts: Switch to UD2 for exceptions
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip由 Linus Torvalds 提交于
Pull x86/pti fixes from Thomas Gleixner: "Three fixes related to melted spectrum: - Sync the cpu_entry_area page table to initial_page_table on 32 bit. Otherwise suspend/resume fails because resume uses initial_page_table and triggers a triple fault when accessing the cpu entry area. - Zero the SPEC_CTL MRS on XEN before suspend to address a shortcoming in the hypervisor. - Fix another switch table detection issue in objtool" * 'x86-pti-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/cpu_entry_area: Sync cpu_entry_area to initial_page_table objtool: Fix another switch table detection issue x86/xen: Zero MSR_IA32_SPEC_CTRL before suspend
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip由 Linus Torvalds 提交于
Pull timer fixes from Thomas Gleixner: "A small set of fixes from the timer departement: - Add a missing timer wheel clock forward when migrating timers off a unplugged CPU to prevent operating on a stale clock base and missing timer deadlines. - Use the proper shift count to extract data from a register value to prevent evaluating unrelated bits - Make the error return check in the FSL timer driver work correctly. Checking an unsigned variable for less than zero does not really work well. - Clarify the confusing comments in the ARC timer code" * 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: timers: Forward timer base before migrating timers clocksource/drivers/arc_timer: Update some comments clocksource/drivers/mips-gic-timer: Use correct shift count to extract data clocksource/drivers/fsl_ftm_timer: Fix error return checking
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip由 Linus Torvalds 提交于
Pull irq fixlet from Thomas Gleixner: "Just a documentation update for the missing device tree property of the R-Car M3N interrupt controller" * 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: dt-bindings/irqchip/renesas-irqc: Document R-Car M3-N support
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git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux由 Linus Torvalds 提交于
Pull btrfs fixes from David Sterba: - when NR_CPUS is large, a SRCU structure can significantly inflate size of the main filesystem structure that would not be possible to allocate by kmalloc, so the kvalloc fallback is used - improved error handling - fix endiannes when printing some filesystem attributes via sysfs, this is could happen when a filesystem is moved between different endianity hosts - send fixes: the NO_HOLE mode should not send a write operation for a file hole - fix log replay for for special files followed by file hardlinks - fix log replay failure after unlink and link combination - fix max chunk size calculation for DUP allocation * tag 'for-4.16-rc3-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux: Btrfs: fix log replay failure after unlink and link combination Btrfs: fix log replay failure after linking special file and fsync Btrfs: send, fix issuing write op when processing hole in no data mode btrfs: use proper endianness accessors for super_copy btrfs: alloc_chunk: fix DUP stripe size handling btrfs: Handle btrfs_set_extent_delalloc failure in relocate_file_extent_cluster btrfs: handle failure of add_pending_csums btrfs: use kvzalloc to allocate btrfs_fs_info
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- 04 3月, 2018 5 次提交
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git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux由 Linus Torvalds 提交于
Pull i2c fixes from Wolfram Sang: "A driver fix and a documentation fix (which makes dependency handling for the next cycle easier)" * 'i2c/for-current-fixed' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux: i2c: octeon: Prevent error message on bus error dt-bindings: at24: sort manufacturers alphabetically
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git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm由 Linus Torvalds 提交于
Pull libnvdimm fixes from Dan Williams: "A 4.16 regression fix, three fixes for -stable, and a cleanup fix: - During the merge window support for the new ACPI NVDIMM Platform Capabilities structure disabled support for "deep flush", a force-unit- access like mechanism for persistent memory. Restore that mechanism. - VFIO like RDMA is yet one more memory registration / pinning interface that is incompatible with Filesystem-DAX. Disable long term pins of Filesystem-DAX mappings via VFIO. - The Filesystem-DAX detection to prevent long terms pins mistakenly also disabled Device-DAX pins which are not subject to the same block- map collision concerns. - Similar to the setup path, softlockup warnings can trigger in the shutdown path for large persistent memory namespaces. Teach for_each_device_pfn() to perform cond_resched() in all cases. - Boaz noticed that the might_sleep() in dax_direct_access() is stale as of the v4.15 kernel. These have received a build success notification from the 0day robot, and the longterm pin fixes have appeared in -next. However, I recently rebased the tree to remove some other fixes that need to be reworked after review feedback. * 'libnvdimm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm: memremap: fix softlockup reports at teardown libnvdimm: re-enable deep flush for pmem devices via fsync() vfio: disable filesystem-dax page pinning dax: fix vma_is_fsdax() helper dax: ->direct_access does not sleep anymore
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由 Linus Torvalds 提交于
Merge tag 'kbuild-fixes-v4.16' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild Pull Kbuild fixes from Masahiro Yamada: - suppress sparse warnings about unknown attributes - fix typos and stale comments - fix build error of arch/sh - fix wrong use of ld-option vs cc-ldoption - remove redundant GCC_PLUGINS_CFLAGS assignment - fix another memory leak of Kconfig - fix line number in error messages of Kconfig - do not write confusing CONFIG_DEFCONFIG_LIST out to .config - add xstrdup() to Kconfig to handle memory shortage errors - show also a Debian package name if ncurses is missing * tag 'kbuild-fixes-v4.16' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: MAINTAINERS: take over Kconfig maintainership kconfig: fix line number in recursive inclusion error message Coccinelle: memdup: Fix typo in warning messages kconfig: Update ncurses package names for menuconfig kbuild/kallsyms: trivial typo fix kbuild: test --build-id linker flag by ld-option instead of cc-ldoption kbuild: drop superfluous GCC_PLUGINS_CFLAGS assignment kconfig: Don't leak choice names during parsing sh: fix build error for empty CONFIG_BUILTIN_DTB_SOURCE kconfig: set SYMBOL_AUTO to the symbol marked with defconfig_list kconfig: add xstrdup() helper kbuild: disable sparse warnings about unknown attributes Makefile: Fix lying comment re. silentoldconfig
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git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media由 Linus Torvalds 提交于
Pull media fixes from Mauro Carvalho Chehab: - some build fixes with randconfigs - an m88ds3103 fix to prevent an OOPS if the chip doesn't provide the right version during probe (with can happen if the hardware hangs) - a potential out of array bounds reference in tvp5150 - some fixes and improvements in the DVB memory mapped API (added for kernel 4.16) * tag 'media/v4.16-3' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: media: vb2: Makefile: place vb2-trace together with vb2-core media: Don't let tvp5150_get_vbi() go out of vbi_ram_default array media: dvb: update buffer mmaped flags and frame counter media: dvb: add continuity error indicators for memory mapped buffers media: dmxdev: Fix the logic that enables DMA mmap support media: dmxdev: fix error code for invalid ioctls media: m88ds3103: don't call a non-initalized function media: au0828: add VIDEO_V4L2 dependency media: dvb: fix DVB_MMAP dependency media: dvb: fix DVB_MMAP symbol name media: videobuf2: fix build issues with vb2-trace media: videobuf2: Add VIDEOBUF2_V4L2 Kconfig option for VB2 V4L2 part
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git://www.linux-watchdog.org/linux-watchdog由 Linus Torvalds 提交于
Pull watchdog fixes from Wim Van Sebroeck: - rave-sp: add NVMEM dependency - build fixes for i6300esb_wdt, xen_wdt and sp5100_tco * tag 'linux-watchdog-4.16-fixes-1' of git://www.linux-watchdog.org/linux-watchdog: watchdog: sp5100_tco.c: fix potential build failure watchdog: xen_wdt: fix potential build failure watchdog: i6300esb: fix build failure watchdog: rave-sp: add NVMEM dependency
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- 03 3月, 2018 7 次提交
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git://git.kernel.org/pub/scm/virt/kvm/kvm由 Linus Torvalds 提交于
Pull KVM fixes from Radim Krčmář: "x86: - fix NULL dereference when using userspace lapic - optimize spectre v1 mitigations by allowing guests to use LFENCE - make microcode revision configurable to prevent guests from unnecessarily blacklisting spectre v2 mitigation feature" * tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: KVM: x86: fix vcpu initialization with userspace lapic KVM: X86: Allow userspace to define the microcode version KVM: X86: Introduce kvm_get_msr_feature() KVM: SVM: Add MSR-based feature support for serializing LFENCE KVM: x86: Add a framework for supporting MSR-based features
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由 Dan Williams 提交于
The cond_resched() currently in the setup path needs to be duplicated in the teardown path. Rather than require each instance of for_each_device_pfn() to open code the same sequence, embed it in the helper. Link: https://github.com/intel/ixpdimm_sw/issues/11 Cc: "Jérôme Glisse" <jglisse@redhat.com> Cc: Michal Hocko <mhocko@suse.com> Cc: Christoph Hellwig <hch@lst.de> Cc: <stable@vger.kernel.org> Fixes: 71389703 ("mm, zone_device: Replace {get, put}_zone_device_page()...") Signed-off-by: NDan Williams <dan.j.williams@intel.com>
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由 Dave Jiang 提交于
Re-enable deep flush so that users always have a way to be sure that a write makes it all the way out to media. Writes from the PMEM driver always arrive at the NVDIMM since movnt is used to bypass the cache, and the driver relies on the ADR (Asynchronous DRAM Refresh) mechanism to flush write buffers on power failure. The Deep Flush mechanism is there to explicitly write buffers to protect against (rare) ADR failure. This change prevents a regression in deep flush behavior so that applications can continue to depend on fsync() as a mechanism to trigger deep flush in the filesystem-DAX case. Fixes: 06e8ccda ("acpi: nfit: Add support for detect platform CPU cache...") Reviewed-by: NJeff Moyer <jmoyer@redhat.com> Signed-off-by: NDave Jiang <dave.jiang@intel.com> Signed-off-by: NDan Williams <dan.j.williams@intel.com>
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由 Masahiro Yamada 提交于
I have recently picked up Kconfig patches to my tree without any declaration. Making it official now. Signed-off-by: NMasahiro Yamada <yamada.masahiro@socionext.com> Acked-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Dan Williams 提交于
Filesystem-DAX is incompatible with 'longterm' page pinning. Without page cache indirection a DAX mapping maps filesystem blocks directly. This means that the filesystem must not modify a file's block map while any page in a mapping is pinned. In order to prevent the situation of userspace holding of filesystem operations indefinitely, disallow 'longterm' Filesystem-DAX mappings. RDMA has the same conflict and the plan there is to add a 'with lease' mechanism to allow the kernel to notify userspace that the mapping is being torn down for block-map maintenance. Perhaps something similar can be put in place for vfio. Note that xfs and ext4 still report: "DAX enabled. Warning: EXPERIMENTAL, use at your own risk" ...at mount time, and resolving the dax-dma-vs-truncate problem is one of the last hurdles to remove that designation. Acked-by: NAlex Williamson <alex.williamson@redhat.com> Cc: Michal Hocko <mhocko@suse.com> Cc: kvm@vger.kernel.org Cc: <stable@vger.kernel.org> Reported-by: NHaozhong Zhang <haozhong.zhang@intel.com> Tested-by: NHaozhong Zhang <haozhong.zhang@intel.com> Fixes: d475c634 ("dax,ext2: replace XIP read and write with DAX I/O") Reviewed-by: NChristoph Hellwig <hch@lst.de> Signed-off-by: NDan Williams <dan.j.williams@intel.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci由 Linus Torvalds 提交于
Pull PCI fixes from Bjorn Helgaas: - Update pci.ids location (documentation only) (Randy Dunlap) - Fix a crash when BIOS didn't assign a BAR and we try to enlarge it (Christian König) * tag 'pci-v4.16-fixes-2' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: PCI: Allow release of resources that were never assigned PCI: Update location of pci.ids file
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git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux由 Linus Torvalds 提交于
Pull parisc fixes from Helge Deller: - a patch to change the ordering of cache and TLB flushes to hopefully fix the random segfaults we very rarely face (by Dave Anglin). - a patch to hide the virtual kernel memory layout due to security reasons. - two small patches to make the kernel run more smoothly under qemu. * 'parisc-4.16-1' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux: parisc: Reduce irq overhead when run in qemu parisc: Use cr16 interval timers unconditionally on qemu parisc: Check if secondary CPUs want own PDC calls parisc: Hide virtual kernel memory layout parisc: Fix ordering of cache and TLB flushes
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