ad0bf4eb91
- Update maintainers. Niklas Schnelle takes over zpci and Vineeth Vijayan common io code. - Extend cpuinfo to include topology information. - Add new extended counters for IBM z15 and sampling buffer allocation rework in perf code. - Add control over zeroing out memory during system restart. - CCA protected key block version 2 support and other fixes/improvements in crypto code. - Convert to new fallthrough; annotations. - Replace zero-length arrays with flexible-arrays. - QDIO debugfs and other small improvements. - Drop 2-level paging support optimization for compat tasks. Varios mm cleanups. - Remove broken and unused hibernate / power management support. - Remove fake numa support which does not bring any benefits. - Exclude offline CPUs from CPU topology masks to be more consistent with other architectures. - Prevent last branching instruction address leaking to userspace. - Other small various fixes and improvements all over the code. -----BEGIN PGP SIGNATURE----- iQEzBAABCAAdFiEE3QHqV+H2a8xAv27vjYWKoQLXFBgFAl6Ig2YACgkQjYWKoQLX FBj2gggAibnHOl9d0ngX1mVT4nz51R3V8z5sEQjNMr2uHBmaTqs7pi/00gaFMxoC NngVEXvL443jSogQivthGgXPpRCV9xdKE3sp38j7fF4LgHoeuDtGd1oaX4W9Rqk0 7Yii35EaO2e2WHdOKaAbu+ZvDRunFjERyntc51MYaIUivFosogSo07vC73vFIArF VGStS09fJ4Ny76ott896T7Ulx1Iek/MkF1vponEMLGNUIcLIQbbxZxOwgz0pHuEF SlyyJBnhOIaAJGOYlKREQDt1cew+hsxluPU+a01bwdsmdZv9LH1BGwLayDqTH58i QWvtEpzJFmDvo9jGM1v81ebaGnyCKg== =hiGF -----END PGP SIGNATURE----- Merge tag 's390-5.7-1' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux Pull s390 updates from Vasily Gorbik: - Update maintainers. Niklas Schnelle takes over zpci and Vineeth Vijayan common io code. - Extend cpuinfo to include topology information. - Add new extended counters for IBM z15 and sampling buffer allocation rework in perf code. - Add control over zeroing out memory during system restart. - CCA protected key block version 2 support and other fixes/improvements in crypto code. - Convert to new fallthrough; annotations. - Replace zero-length arrays with flexible-arrays. - QDIO debugfs and other small improvements. - Drop 2-level paging support optimization for compat tasks. Varios mm cleanups. - Remove broken and unused hibernate / power management support. - Remove fake numa support which does not bring any benefits. - Exclude offline CPUs from CPU topology masks to be more consistent with other architectures. - Prevent last branching instruction address leaking to userspace. - Other small various fixes and improvements all over the code. * tag 's390-5.7-1' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: (57 commits) s390/mm: cleanup init_new_context() callback s390/mm: cleanup virtual memory constants usage s390/mm: remove page table downgrade support s390/qdio: set qdio_irq->cdev at allocation time s390/qdio: remove unused function declarations s390/ccwgroup: remove pm support s390/ap: remove power management code from ap bus and drivers s390/zcrypt: use kvmalloc instead of kmalloc for 256k alloc s390/mm: cleanup arch_get_unmapped_area() and friends s390/ism: remove pm support s390/cio: use fallthrough; s390/vfio: use fallthrough; s390/zcrypt: use fallthrough; s390: use fallthrough; s390/cpum_sf: Fix wrong page count in error message s390/diag: fix display of diagnose call statistics s390/ap: Remove ap device suspend and resume callbacks s390/pci: Improve handling of unset UID s390/pci: Fix zpci_alloc_domain() over allocation s390/qdio: pass ISC as parameter to chsc_sadc() ...
59 lines
1.5 KiB
C
59 lines
1.5 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef __MMU_H
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#define __MMU_H
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#include <linux/cpumask.h>
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#include <linux/errno.h>
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typedef struct {
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spinlock_t lock;
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cpumask_t cpu_attach_mask;
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atomic_t flush_count;
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unsigned int flush_mm;
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struct list_head pgtable_list;
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struct list_head gmap_list;
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unsigned long gmap_asce;
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unsigned long asce;
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unsigned long asce_limit;
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unsigned long vdso_base;
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/* The mmu context belongs to a secure guest. */
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atomic_t is_protected;
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/*
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* The following bitfields need a down_write on the mm
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* semaphore when they are written to. As they are only
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* written once, they can be read without a lock.
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*
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* The mmu context allocates 4K page tables.
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*/
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unsigned int alloc_pgste:1;
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/* The mmu context uses extended page tables. */
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unsigned int has_pgste:1;
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/* The mmu context uses storage keys. */
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unsigned int uses_skeys:1;
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/* The mmu context uses CMM. */
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unsigned int uses_cmm:1;
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/* The gmaps associated with this context are allowed to use huge pages. */
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unsigned int allow_gmap_hpage_1m:1;
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} mm_context_t;
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#define INIT_MM_CONTEXT(name) \
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.context.lock = __SPIN_LOCK_UNLOCKED(name.context.lock), \
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.context.pgtable_list = LIST_HEAD_INIT(name.context.pgtable_list), \
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.context.gmap_list = LIST_HEAD_INIT(name.context.gmap_list),
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static inline int tprot(unsigned long addr)
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{
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int rc = -EFAULT;
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asm volatile(
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" tprot 0(%1),0\n"
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"0: ipm %0\n"
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" srl %0,28\n"
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"1:\n"
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EX_TABLE(0b,1b)
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: "+d" (rc) : "a" (addr) : "cc");
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return rc;
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}
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#endif
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