- 26 Jul, 2017 22 commits
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Martin Schwidefsky authored
The z14 machine introduces new mode of the next-instruction-access-intent NIAI instruction. With NIAI-8 it is possible to pin a cache-line on a CPU for a small amount of time, NIAI-7 releases the cache-line again. Finally NIAI-4 can be used to prevent the CPU to speculatively access memory beyond the compare-and-swap instruction to get the lock. Use these instruction in the spinlock code. Signed-off-by:Martin Schwidefsky <schwidefsky@de.ibm.com>
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Arvind Yadav authored
attribute_group are not supposed to change at runtime. All functions working with attribute_group provided by <linux/sysfs.h> work with const attribute_group. So mark the non-const structs as const. Signed-off-by:
Arvind Yadav <arvind.yadav.cs@gmail.com> Signed-off-by:
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Arvind Yadav authored
attribute_group are not supposed to change at runtime. All functions working with attribute_group provided by <linux/sysfs.h> work with const attribute_group. So mark the non-const structs as const. File size before: text data bss dec hex filename 11511 656 16 12183 2f97 drivers/s390/char/tape_core.o File size After adding 'const': text data bss dec hex filename 11575 592 16 12183 2f97 drivers/s390/char/tape_core.o Signed-off-by:
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Arvind Yadav authored
attribute_group are not supposed to change at runtime. All functions working with attribute_group provided by <linux/sysfs.h> work with const attribute_group. So mark the non-const structs as const. File size before: text data bss dec hex filename 8069 816 16 8901 22c5 drivers/s390/char/raw3270.o File size After adding 'const': text data bss dec hex filename 8133 752 16 8901 22c5 drivers/s390/char/raw3270.o Signed-off-by:
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Arvind Yadav authored
attribute_group are not supposed to change at runtime. All functions working with attribute_group provided by <linux/sysfs.h> work with const attribute_group. So mark the non-const structs as const. File size before: text data bss dec hex filename 6763 1216 0 7979 1f2b drivers/s390/net/qeth_l3_sys.o File size After adding 'const': text data bss dec hex filename 7019 960 0 7971 1f2b drivers/s390/net/qeth_l3_sys.o Signed-off-by:
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Arvind Yadav authored
attribute_group are not supposed to change at runtime. All functions working with attribute_group provided by <linux/sysfs.h> work with const attribute_group. So mark the non-const structs as const. Signed-off-by:
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Arvind Yadav authored
attribute_group are not supposed to change at runtime. All functions working with attribute_group provided by <linux/sysfs.h> work with const attribute_group. So mark the non-const structs as const. Signed-off-by:
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Arvind Yadav authored
attribute_group are not supposed to change at runtime. All functions working with attribute_group provided by <linux/sysfs.h> work with const attribute_group. So mark the non-const structs as const. File size before: text data bss dec hex filename 1019 160 0 1179 49b drivers/s390/crypto/zcrypt_card.o File size After adding 'const': text data bss dec hex filename 1083 96 0 1179 49b drivers/s390/crypto/zcrypt_card.o Signed-off-by:
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Arvind Yadav authored
attribute_group are not supposed to change at runtime. All functions working with attribute_group provided by <linux/sysfs.h> work with const attribute_group. So mark the non-const structs as const. File size before: text data bss dec hex filename 1361 96 0 1457 5b1 s390/crypto/zcrypt_queue.o File size After adding 'const': text data bss dec hex filename 1425 32 0 1457 5b1 s390/crypto/zcrypt_queue.o Signed-off-by:
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Martin Schwidefsky authored
Add detection for machine type 0x3906 and set the ELF platform name to z14. Add the miscellaneous-instruction-extension 2 facility to the list of facilities for z14. And allow to generate code that only runs on a z14 machine. Signed-off-by: -
Martin Schwidefsky authored
The TOD epoch extension adds 8 epoch bits to the TOD clock to provide a continuous clock after 2042/09/17. The store-clock-extended (STCKE) instruction will store the epoch index in the first byte of the 16 bytes stored by the instruction. The read_boot_clock64 and the read_presistent_clock64 functions need to take the additional bits into account to give the correct result after 2042/09/17. The clock-comparator register will stay 64 bit wide. The comparison of the clock-comparator with the TOD clock is limited to bytes 1 to 8 of the extended TOD format. To deal with the overflow problem due to an epoch change the clock-comparator sign control in CR0 can be used to switch the comparison of the 64-bit TOD clock with the clock-comparator to a signed comparison. The decision between the signed vs. unsigned clock-comparator comparisons is done at boot time. Only if the TOD clock is in the second half of a 142 year epoch the signed comparison is used. This solves the epoch overflow issue as long as the machine is booted at least once in an epoch. Signed-off-by: -
Martin Schwidefsky authored
Set a new option bit of the attach command to speed up memory hotplug. Signed-off-by: -
Heiko Carstens authored
Reviewed-by:
Janosch Frank <frankja@linux.vnet.ibm.com> Signed-off-by:
Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by:
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Heiko Carstens authored
Acked-by:
Christian Borntraeger <borntraeger@de.ibm.com> Reviewed-by:
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Heiko Carstens authored
Reviewed-by:
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Heiko Carstens authored
Add various defines like e.g. _REGION1_SHIFT to reflect the hardware mmu. We have quite a bit code that does not make use of the Linux memory management primitives but directly modifies page, segment and region values. Most of this is open-coded like e.g. "1UL << 53". In order to clean this up introduce a couple of new defines. The existing Linux memory management defines are changed, so the mapping to the hardware implementation is reflected. Reviewed-by:
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Heiko Carstens authored
We have C code also outside of #ifndef __ASSEMBLY__. So these guards seem to be quite pointless and can be removed. Reviewed-by:
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Heiko Carstens authored
Reviewed-by:
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Martin Schwidefsky authored
Add the TLB flushing changes via a tip branch to ease merging with the KVM tree.
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git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsiLinus Torvalds authored
Pull SCSI fixes from James Bottomley: "Three small fixes. The transfer size fixes are actually correcting some performance drops on the hpsa and smartpqi cards. The cards actually have an internal cache for request speed up but bypass it for transfers > 1MB. Since 4.3 the efficiency of our merges has rendered the cache mostly unused, so limit transfers to under 1MB to recover the cache boost" * tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: scsi: sg: fix static checker warning in sg_is_valid_dxfer scsi: smartpqi: limit transfer length to 1MB scsi: hpsa: limit transfer length to 1MB
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git://git.infradead.org/users/hch/uuidLinus Torvalds authored
Pull uuid fixes from Christoph Hellwig: - add a missing "!" in the uuid tests - remove the last remaining user of the uuid_be type, and then the type and its helpers * tag 'uuid-for-4.13-2' of git://git.infradead.org/users/hch/uuid: uuid: remove uuid_be thunderbolt: use uuid_t instead of uuid_be uuid: fix incorrect uuid_equal conversion in test_uuid_test
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git://git.infradead.org/users/hch/dma-mappingLinus Torvalds authored
Pull dma mapping fixes from Christoph Hellwig: "split the global dma coherent pool from the per-device pool. This fixes a regression in the earlier 4.13 pull requests where the global pool would override a per-device CMA pool (Vladimir Murzin)" * tag 'dma-mapping-4.13-2' of git://git.infradead.org/users/hch/dma-mapping: ARM: NOMMU: Wire-up default DMA interface dma-coherent: introduce interface for default DMA pool
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- 25 Jul, 2017 7 commits
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git://github.com/kleikamp/linux-shaggyLinus Torvalds authored
Pull JFS fixes from David Kleikamp. * tag 'jfs-4.13' of git://github.com/kleikamp/linux-shaggy: jfs: preserve i_mode if __jfs_set_acl() fails jfs: Don't clear SGID when inheriting ACLs jfs: atomically read inode size
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git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hidLinus Torvalds authored
Pull HID fixes from Jiri Kosina: - regression fix (missing IRQs) for devices that require 'always poll' quirk, from Dmitry Torokhov - new device ID addition to Ortek driver, from Benjamin Tissoires * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid: HID: ortek: add one more buggy device HID: usbhid: fix "always poll" quirk
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git://git.kernel.org/pub/scm/linux/kernel/git/s390/linuxLinus Torvalds authored
Pull s390 fixes from Martin Schwidefsky: "Three bug fixes" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: s390/mm: set change and reference bit on lazy key enablement s390: chp: handle CRW_ERC_INIT for channel-path status change s390/perf: fix problem state detection
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Martin Schwidefsky authored
Signed-off-by: -
Martin Schwidefsky authored
Signed-off-by: -
Martin Schwidefsky authored
Signed-off-by: -
Martin Schwidefsky authored
The ESSA instruction has a new option that allows to tag pages that are not used as a page table. Without the tag the hypervisor has to assume that any guest page could be used in a page table inside the guest. This forces the hypervisor to flush all guest TLB entries whenever a host page table entry is invalidated. With the tag the host can skip the TLB flush if the page is tagged as normal page. Signed-off-by:
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- 24 Jul, 2017 3 commits
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Christoph Hellwig authored
Everything uses uuid_t now. Signed-off-by:
Christoph Hellwig <hch@lst.de> Reviewed-by:
Amir Goldstein <amir73il@gmail.com> Reviewed-by:
Andy Shevchenko <andriy.shevchenko@linux.intel.com>
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Christoph Hellwig authored
Switch thunderbolt to the new uuid type. Signed-off-by:
Mika Westerberg <mika.westerberg@linux.intel.com>
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Benjamin Tissoires authored
The iHome keypad also requires the same tweak we are doing for other Ortek devices. Reported-by:
Mairin Duffy <duffy@redhat.com> Signed-off-by:
Benjamin Tissoires <benjamin.tissoires@redhat.com> Signed-off-by:
Jiri Kosina <jkosina@suse.cz>
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- 23 Jul, 2017 8 commits
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Linus Torvalds authored
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Linus Torvalds authored
This adds a perl script to actually parse the MAINTAINERS file, clean up some whitespace in it, warn about errors in it, and then properly sort the end result. My perl-fu is atrocious, so the script has basically been created by randomly putting various characters in a pile, mixing them around, and then looking it the end result does anything interesting when used as a perl script. Signed-off-by:Linus Torvalds <torvalds@linux-foundation.org>
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Linus Torvalds authored
Prepping for scripting the MAINTAINERS file cleanup (and possible split) showed a couple of cases where the headers for a couple of entries were bogus. There's a few different kinds of bogosities: - the X-GENE SOC EDAC case was confused and split over two lines - there were four entries for "GREYBUS PROTOCOLS DRIVERS" that were all different things. - the NOKIA N900 CAMERA SUPPORT" was duplicated all of which were more obvious when you started doing associative arrays in perl to track these things by the header (so that we can alphabetize this thing properly, and so that we might split it up by the data too). Cc: Joe Perches <joe@perches.com> Signed-off-by: -
git://git.kernel.org/pub/scm/linux/kernel/git/xen/tipLinus Torvalds authored
Pull xen fixes from Juergen Gross: "Some fixes and cleanups for running under Xen" * tag 'for-linus-4.13b-rc2-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip: xen/balloon: don't online new memory initially xen/x86: fix cpu hotplug xen/grant-table: log the lack of grants xen/x86: Don't BUG on CPU0 offlining
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Juergen Gross authored
When setting up the Xenstore watch for the memory target size the new watch will fire at once. Don't try to reach the configured target size by onlining new memory in this case, as the current memory size will be smaller in almost all cases due to e.g. BIOS reserved pages. Onlining new memory will lead to more problems e.g. undesired conflicts with NVMe devices meant to be operated as block devices. Instead remember the difference between target size and current size when the watch fires for the first time and apply it to any further size changes, too. In order to avoid races between balloon.c and xen-balloon.c init calls do the xen-balloon.c initialization from balloon.c. Signed-off-by:
Juergen Gross <jgross@suse.com> Reviewed-by:
Boris Ostrovsky <boris.ostrovsky@oracle.com> Signed-off-by:
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Juergen Gross authored
Commit dc6416f1 ("xen/x86: Call cpu_startup_entry(CPUHP_AP_ONLINE_IDLE) from xen_play_dead()") introduced an error leading to a stack overflow of the idle task when a cpu was brought offline/online many times: by calling cpu_startup_entry() instead of returning at the end of xen_play_dead() do_idle() would be entered again and again. Don't use cpu_startup_entry(), but cpuhp_online_idle() instead allowing to return from xen_play_dead(). Cc: <stable@vger.kernel.org> # 4.12 Signed-off-by:
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Wengang Wang authored
log a message when we enter this situation: 1) we already allocated the max number of available grants from hypervisor and 2) we still need more (but the request fails because of 1)). Sometimes the lack of grants causes IO hangs in xen_blkfront devices. Adding this log would help debuging. Signed-off-by:
Wengang Wang <wen.gang.wang@oracle.com> Reviewed-by:
Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Reviewed-by:
Junxiao Bi <junxiao.bi@oracle.com> Reviewed-by:
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Vitaly Kuznetsov authored
CONFIG_BOOTPARAM_HOTPLUG_CPU0 allows to offline CPU0 but Xen HVM guests BUG() in xen_teardown_timer(). Remove the BUG_ON(), this is probably a leftover from ancient times when CPU0 hotplug was impossible, it works just fine for HVM. Signed-off-by:
Vitaly Kuznetsov <vkuznets@redhat.com> Acked-by:
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