/* SPDX-License-Identifier: GPL-2.0 */ /* * S390 version * Copyright IBM Corp. 1999, 2000 * Author(s): Hartmut Penner (hp@de.ibm.com) */ #ifndef _S390_PAGE_H #define _S390_PAGE_H #include <linux/const.h> #include <asm/types.h> #define _PAGE_SHIFT 12 #define _PAGE_SIZE (_AC(1, UL) << _PAGE_SHIFT) #define _PAGE_MASK (~(_PAGE_SIZE - 1)) /* PAGE_SHIFT determines the page size */ #define PAGE_SHIFT _PAGE_SHIFT #define PAGE_SIZE _PAGE_SIZE #define PAGE_MASK _PAGE_MASK #define PAGE_DEFAULT_ACC 0 #define PAGE_DEFAULT_KEY (PAGE_DEFAULT_ACC << 4) #define HPAGE_SHIFT 20 #define HPAGE_SIZE (1UL << HPAGE_SHIFT) #define HPAGE_MASK (~(HPAGE_SIZE - 1)) #define HUGETLB_PAGE_ORDER (HPAGE_SHIFT - PAGE_SHIFT) #define HUGE_MAX_HSTATE 2 #define ARCH_HAS_SETCLEAR_HUGE_PTE #define ARCH_HAS_HUGE_PTE_TYPE #define ARCH_HAS_PREPARE_HUGEPAGE #define ARCH_HAS_HUGEPAGE_CLEAR_FLUSH #define HAVE_ARCH_HUGETLB_UNMAPPED_AREA #include <asm/setup.h> #ifndef __ASSEMBLY__ void __storage_key_init_range(unsigned long start, unsigned long end); static inline void storage_key_init_range(unsigned long start, unsigned long end) { if (PAGE_DEFAULT_KEY != 0) __storage_key_init_range(start, end); } #define clear_page(page) memset((page), 0, PAGE_SIZE) /* * copy_page uses the mvcl instruction with 0xb0 padding byte in order to * bypass caches when copying a page. Especially when copying huge pages * this keeps L1 and L2 data caches alive. */ static inline void copy_page(void *to, void *from) { register void *reg2 asm ("2") = to; register unsigned long reg3 asm ("3") = 0x1000; register void *reg4 asm ("4") = from; register unsigned long reg5 asm ("5") = 0xb0001000; asm volatile( " mvcl 2,4" : "+d" (reg2), "+d" (reg3), "+d" (reg4), "+d" (reg5) : : "memory", "cc"); } #define clear_user_page(page, vaddr, pg) clear_page(page) #define copy_user_page(to, from, vaddr, pg) copy_page(to, from) #define __alloc_zeroed_user_highpage(movableflags, vma, vaddr) \ alloc_page_vma(GFP_HIGHUSER | __GFP_ZERO | movableflags, vma, vaddr) #define __HAVE_ARCH_ALLOC_ZEROED_USER_HIGHPAGE /* * These are used to make use of C type-checking.. */ typedef struct { unsigned long pgprot; } pgprot_t; typedef struct { unsigned long pgste; } pgste_t; typedef struct { unsigned long pte; } pte_t; typedef struct { unsigned long pmd; } pmd_t; typedef struct { unsigned long pud; } pud_t; typedef struct { unsigned long p4d; } p4d_t; typedef struct { unsigned long pgd; } pgd_t; typedef pte_t *pgtable_t; #define pgprot_val(x) ((x).pgprot) #define pgste_val(x) ((x).pgste) #define pte_val(x) ((x).pte) #define pmd_val(x) ((x).pmd) #define pud_val(x) ((x).pud) #define p4d_val(x) ((x).p4d) #define pgd_val(x) ((x).pgd) #define __pgste(x) ((pgste_t) { (x) } ) #define __pte(x) ((pte_t) { (x) } ) #define __pmd(x) ((pmd_t) { (x) } ) #define __pud(x) ((pud_t) { (x) } ) #define __p4d(x) ((p4d_t) { (x) } ) #define __pgd(x) ((pgd_t) { (x) } ) #define __pgprot(x) ((pgprot_t) { (x) } ) static inline void page_set_storage_key(unsigned long addr, unsigned char skey, int mapped) { if (!mapped) asm volatile(".insn rrf,0xb22b0000,%0,%1,8,0" : : "d" (skey), "a" (addr)); else asm volatile("sske %0,%1" : : "d" (skey), "a" (addr)); } static inline unsigned char page_get_storage_key(unsigned long addr) { unsigned char skey; asm volatile("iske %0,%1" : "=d" (skey) : "a" (addr)); return skey; } static inline int page_reset_referenced(unsigned long addr) { int cc; asm volatile( " rrbe 0,%1\n" " ipm %0\n" " srl %0,28\n" : "=d" (cc) : "a" (addr) : "cc"); return cc; } /* Bits int the storage key */ #define _PAGE_CHANGED 0x02 /* HW changed bit */ #define _PAGE_REFERENCED 0x04 /* HW referenced bit */ #define _PAGE_FP_BIT 0x08 /* HW fetch protection bit */ #define _PAGE_ACC_BITS 0xf0 /* HW access control bits */ struct page; void arch_free_page(struct page *page, int order); void arch_alloc_page(struct page *page, int order); void arch_set_page_dat(struct page *page, int order); void arch_set_page_nodat(struct page *page, int order); int arch_test_page_nodat(struct page *page); void arch_set_page_states(int make_stable); static inline int devmem_is_allowed(unsigned long pfn) { return 0; } #define HAVE_ARCH_FREE_PAGE #define HAVE_ARCH_ALLOC_PAGE #endif /* !__ASSEMBLY__ */ #define __PAGE_OFFSET 0x0UL #define PAGE_OFFSET 0x0UL #define __pa(x) ((unsigned long)(x)) #define __va(x) ((void *)(unsigned long)(x)) #define virt_to_pfn(kaddr) (__pa(kaddr) >> PAGE_SHIFT) #define pfn_to_virt(pfn) __va((pfn) << PAGE_SHIFT) #define virt_to_page(kaddr) pfn_to_page(virt_to_pfn(kaddr)) #define page_to_virt(page) pfn_to_virt(page_to_pfn(page)) #define phys_to_pfn(kaddr) ((kaddr) >> PAGE_SHIFT) #define pfn_to_phys(pfn) ((pfn) << PAGE_SHIFT) #define phys_to_page(kaddr) pfn_to_page(phys_to_pfn(kaddr)) #define page_to_phys(page) (page_to_pfn(page) << PAGE_SHIFT) #define virt_addr_valid(kaddr) pfn_valid(__pa(kaddr) >> PAGE_SHIFT) #define VM_DATA_DEFAULT_FLAGS (VM_READ | VM_WRITE | \ VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC) #define ARCH_ZONE_DMA_BITS 31 #include <asm-generic/memory_model.h> #include <asm-generic/getorder.h> #endif /* _S390_PAGE_H */
Name | Type | Size | Permission | Actions |
---|---|---|---|---|
fpu | Folder | 0755 |
|
|
trace | Folder | 0755 |
|
|
Kbuild | File | 557 B | 0644 |
|
airq.h | File | 3.02 KB | 0644 |
|
alternative-asm.h | File | 3.07 KB | 0644 |
|
alternative.h | File | 4.99 KB | 0644 |
|
ap.h | File | 9.9 KB | 0644 |
|
appldata.h | File | 1.54 KB | 0644 |
|
archrandom.h | File | 1.17 KB | 0644 |
|
asm-prototypes.h | File | 227 B | 0644 |
|
atomic.h | File | 5.1 KB | 0644 |
|
atomic_ops.h | File | 4.02 KB | 0644 |
|
barrier.h | File | 1.84 KB | 0644 |
|
bitops.h | File | 10.13 KB | 0644 |
|
bug.h | File | 1.49 KB | 0644 |
|
bugs.h | File | 441 B | 0644 |
|
cache.h | File | 387 B | 0644 |
|
ccwdev.h | File | 7.99 KB | 0644 |
|
ccwgroup.h | File | 2.53 KB | 0644 |
|
checksum.h | File | 3.24 KB | 0644 |
|
chpid.h | File | 974 B | 0644 |
|
cio.h | File | 8.01 KB | 0644 |
|
clp.h | File | 1.32 KB | 0644 |
|
cmb.h | File | 425 B | 0644 |
|
cmpxchg.h | File | 1.76 KB | 0644 |
|
compat.h | File | 7.9 KB | 0644 |
|
cpacf.h | File | 16.8 KB | 0644 |
|
cpcmd.h | File | 1.11 KB | 0644 |
|
cpu.h | File | 549 B | 0644 |
|
cpu_mf.h | File | 8.99 KB | 0644 |
|
cpufeature.h | File | 963 B | 0644 |
|
cputime.h | File | 805 B | 0644 |
|
crw.h | File | 1.86 KB | 0644 |
|
css_chars.h | File | 769 B | 0644 |
|
ctl_reg.h | File | 2.89 KB | 0644 |
|
current.h | File | 405 B | 0644 |
|
debug.h | File | 8.1 KB | 0644 |
|
delay.h | File | 721 B | 0644 |
|
diag.h | File | 5.94 KB | 0644 |
|
dis.h | File | 637 B | 0644 |
|
dma-mapping.h | File | 621 B | 0644 |
|
dma.h | File | 456 B | 0644 |
|
eadm.h | File | 2.03 KB | 0644 |
|
ebcdic.h | File | 1.41 KB | 0644 |
|
elf.h | File | 10.36 KB | 0644 |
|
exec.h | File | 269 B | 0644 |
|
extable.h | File | 875 B | 0644 |
|
extmem.h | File | 804 B | 0644 |
|
facility.h | File | 2.44 KB | 0644 |
|
fcx.h | File | 7.91 KB | 0644 |
|
ftrace.h | File | 1.66 KB | 0644 |
|
futex.h | File | 2.09 KB | 0644 |
|
gmap.h | File | 4.93 KB | 0644 |
|
hardirq.h | File | 670 B | 0644 |
|
hugetlb.h | File | 2.87 KB | 0644 |
|
hw_irq.h | File | 249 B | 0644 |
|
idals.h | File | 5.22 KB | 0644 |
|
idle.h | File | 709 B | 0644 |
|
io.h | File | 2.03 KB | 0644 |
|
ipl.h | File | 3.6 KB | 0644 |
|
irq.h | File | 2.55 KB | 0644 |
|
irqflags.h | File | 1.76 KB | 0644 |
|
isc.h | File | 1000 B | 0644 |
|
itcw.h | File | 950 B | 0644 |
|
jump_label.h | File | 1.36 KB | 0644 |
|
kdebug.h | File | 386 B | 0644 |
|
kexec.h | File | 1.32 KB | 0644 |
|
kprobes.h | File | 2.24 KB | 0644 |
|
kvm_host.h | File | 22.24 KB | 0644 |
|
kvm_para.h | File | 5.78 KB | 0644 |
|
linkage.h | File | 633 B | 0644 |
|
livepatch.h | File | 461 B | 0644 |
|
lowcore.h | File | 6.29 KB | 0644 |
|
mmu.h | File | 1.19 KB | 0644 |
|
mmu_context.h | File | 3.84 KB | 0644 |
|
mmzone.h | File | 316 B | 0644 |
|
module.h | File | 802 B | 0644 |
|
nmi.h | File | 3.44 KB | 0644 |
|
nospec-branch.h | File | 342 B | 0644 |
|
nospec-insn.h | File | 3.81 KB | 0644 |
|
numa.h | File | 730 B | 0644 |
|
os_info.h | File | 1.1 KB | 0644 |
|
page-states.h | File | 486 B | 0644 |
|
page.h | File | 5.12 KB | 0644 |
|
pci.h | File | 6.26 KB | 0644 |
|
pci_clp.h | File | 4.25 KB | 0644 |
|
pci_debug.h | File | 608 B | 0644 |
|
pci_dma.h | File | 5.7 KB | 0644 |
|
pci_insn.h | File | 2.59 KB | 0644 |
|
pci_io.h | File | 4.58 KB | 0644 |
|
percpu.h | File | 6.44 KB | 0644 |
|
perf_event.h | File | 2.71 KB | 0644 |
|
pgalloc.h | File | 4.32 KB | 0644 |
|
pgtable.h | File | 47.7 KB | 0644 |
|
pkey.h | File | 4.23 KB | 0644 |
|
preempt.h | File | 3.25 KB | 0644 |
|
processor.h | File | 10.42 KB | 0644 |
|
ptrace.h | File | 5.27 KB | 0644 |
|
qdio.h | File | 11.67 KB | 0644 |
|
reset.h | File | 471 B | 0644 |
|
runtime_instr.h | File | 1.76 KB | 0644 |
|
schid.h | File | 525 B | 0644 |
|
sclp.h | File | 3.38 KB | 0644 |
|
scsw.h | File | 24.1 KB | 0644 |
|
seccomp.h | File | 516 B | 0644 |
|
sections.h | File | 155 B | 0644 |
|
segment.h | File | 93 B | 0644 |
|
serial.h | File | 147 B | 0644 |
|
set_memory.h | File | 779 B | 0644 |
|
setup.h | File | 4.44 KB | 0644 |
|
shmparam.h | File | 285 B | 0644 |
|
signal.h | File | 644 B | 0644 |
|
sigp.h | File | 1.8 KB | 0644 |
|
smp.h | File | 2.45 KB | 0644 |
|
sparsemem.h | File | 214 B | 0644 |
|
spinlock.h | File | 3.53 KB | 0644 |
|
spinlock_types.h | File | 437 B | 0644 |
|
stp.h | File | 1.26 KB | 0644 |
|
string.h | File | 4.5 KB | 0644 |
|
switch_to.h | File | 1.37 KB | 0644 |
|
syscall.h | File | 2.63 KB | 0644 |
|
sysinfo.h | File | 4.22 KB | 0644 |
|
termios.h | File | 685 B | 0644 |
|
thread_info.h | File | 3.15 KB | 0644 |
|
timex.h | File | 6.15 KB | 0644 |
|
tlb.h | File | 5.71 KB | 0644 |
|
tlbflush.h | File | 3.52 KB | 0644 |
|
topology.h | File | 2.69 KB | 0644 |
|
uaccess.h | File | 6.57 KB | 0644 |
|
unistd.h | File | 1.03 KB | 0644 |
|
uprobes.h | File | 588 B | 0644 |
|
user.h | File | 3.3 KB | 0644 |
|
vdso.h | File | 1.8 KB | 0644 |
|
vga.h | File | 170 B | 0644 |
|
vtime.h | File | 182 B | 0644 |
|
vtimer.h | File | 866 B | 0644 |
|
vx-insn.h | File | 10.66 KB | 0644 |
|
xor.h | File | 454 B | 0644 |
|