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f4eb07c17d
linux/include/asm-s390
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Heiko Carstens f4eb07c17d [S390] Virtual memmap for s390. 
Virtual memmap support for s390. Inspired by the ia64 implementation.

Unlike ia64 we need a mechanism which allows us to dynamically attach
shared memory regions.
These memory regions are accessed via the dcss device driver. dcss
implements the 'direct_access' operation, which requires struct pages
for every single shared page.
Therefore this implementation provides an interface to attach/detach
shared memory:

int add_shared_memory(unsigned long start, unsigned long size);
int remove_shared_memory(unsigned long start, unsigned long size);

The purpose of the add_shared_memory function is to add the given
memory range to the 1:1 mapping and to make sure that the
corresponding range in the vmemmap is backed with physical pages.
It also initialises the new struct pages.

remove_shared_memory in turn only invalidates the page table
entries in the 1:1 mapping. The page tables and the memory used for
struct pages in the vmemmap are currently not freed. They will be
reused when the next segment will be attached.
Given that the maximum size of a shared memory region is 2GB and
in addition all regions must reside below 2GB this is not too much of
a restriction, but there is room for improvement.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2006-12-08 15:56:07 +01:00
..
a.out.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
appldata.h [S390] Inline assembly cleanup. 2006-09-28 16:56:43 +02:00
atomic.h [S390] Inline assembly cleanup. 2006-09-28 16:56:43 +02:00
auxvec.h [PATCH] auxiliary vector cleanups 2005-09-07 16:57:21 -07:00
bitops.h [S390] Inline assembly cleanup. 2006-09-28 16:56:43 +02:00
bug.h [S390] __builtin_trap() and gcc version. 2006-07-12 16:39:42 +02:00
bugs.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
byteorder.h [S390] Inline assembly cleanup. 2006-09-28 16:56:43 +02:00
cache.h [PATCH] s390: add read_mostly optimization 2006-04-28 08:33:48 -07:00
cacheflush.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
ccwdev.h [S390] Fix sparse warnings. 2006-07-12 16:41:55 +02:00
ccwgroup.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
checksum.h [NET]: S390 checksum annotations and cleanups. 2006-12-02 21:23:21 -08:00
cio.h [S390] cio: Make ccw_dev_id_is_equal() more robust. 2006-12-04 15:40:54 +01:00
cmb.h [S390] rework of channel measurement facility. 2006-06-29 15:08:41 +02:00
compat.h [PATCH] s390: add ptr_to_compat() 2006-03-27 08:44:48 -08:00
cpcmd.h [S390] cpcmd <-> __cpcmd calling issues 2006-12-04 15:40:30 +01:00
cputime.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
current.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
dasd.h [S390] New DASD feature for ERP related logging 2006-12-08 15:54:15 +01:00
debug.h [PATCH] Fix 'make headers_check' on s390 2006-09-16 12:54:31 -07:00
delay.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
device.h Driver core: add dev_archdata to struct device 2006-12-01 14:52:01 -08:00
div64.h [S390] __div64_32 for 31 bit. 2006-09-28 16:55:39 +02:00
dma-mapping.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
dma.h [S390] empty function defines. 2006-09-20 15:58:51 +02:00
ebcdic.h [S390] Inline assembly cleanup. 2006-09-28 16:56:43 +02:00
elf.h [PATCH] Fix 'make headers_check' on s390 2006-09-16 12:54:31 -07:00
emergency-restart.h [PATCH] Add emergency_restart() 2005-07-26 14:35:41 -07:00
errno.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
extmem.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
fcntl.h [PATCH] Clean up struct flock64 definitions 2005-09-07 16:57:38 -07:00
futex.h [S390] Make user-copy operations run-time configurable. 2006-09-20 15:59:42 +02:00
hardirq.h [S390] irq change build fixes. 2006-10-06 16:38:35 +02:00
idals.h Don't include linux/config.h from anywhere else in include/ 2006-04-26 12:56:16 +01:00
io.h [S390] Remove open-coded mem_map usage. 2006-10-04 20:02:23 +02:00
ioctl.h [PATCH] Generic ioctl.h 2006-01-10 08:01:34 -08:00
ioctls.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
ipc.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
ipcbuf.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
irq_regs.h [S390] irq change build fixes. 2006-10-06 16:38:35 +02:00
irq.h [PATCH] Make touch_nmi_watchdog imply touch_softlockup_watchdog on all archs 2006-09-29 09:18:05 -07:00
irqflags.h [S390] Inline assembly cleanup. 2006-09-28 16:56:43 +02:00
Kbuild [S390] Unexport <asm/z90crypt.h>, export <asm/zcrypt.h> in its place. 2006-09-24 22:07:25 +01:00
kdebug.h [S390] add kprobes support. 2006-09-20 15:58:39 +02:00
kexec.h [S390] Bad kexec control page allocation. 2006-12-04 15:40:28 +01:00
kmap_types.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
kprobes.h [S390] add kprobes support. 2006-09-20 15:58:39 +02:00
linkage.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
local.h Don't include linux/config.h from anywhere else in include/ 2006-04-26 12:56:16 +01:00
lowcore.h [S390] Reset infrastructure for re-IPL. 2006-12-04 15:40:26 +01:00
mathemu.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
mman.h [PATCH] add asm-generic/mman.h 2006-02-15 15:32:22 -08:00
mmu_context.h [PATCH] s390: "extern inline" -> "static inline" 2005-11-09 07:55:52 -08:00
mmu.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
module.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
monwriter.h [S390] Linux API for writing z/VM APPLDATA Monitor records. 2006-09-20 15:59:34 +02:00
msgbuf.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
mutex.h [PATCH] mutex subsystem, add default include/asm-*/mutex.h files 2006-01-09 15:59:19 -08:00
namei.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
page.h [S390] Virtual memmap for s390. 2006-12-08 15:56:07 +01:00
param.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
pci.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
percpu.h [PATCH] Fix typo in "syntax error if percpu macros are incorrectly used" patch 2006-10-06 08:53:41 -07:00
pgalloc.h [S390] Virtual memmap for s390. 2006-12-08 15:56:07 +01:00
pgtable.h [S390] Virtual memmap for s390. 2006-12-08 15:56:07 +01:00
poll.h [PATCH] POLLRDHUP/EPOLLRDHUP handling for half-closed devices notifications 2006-03-25 08:22:56 -08:00
posix_types.h [S390] __FD_foo definitions. 2006-06-14 14:10:51 +01:00
processor.h [S390] Inline assembly cleanup. 2006-09-28 16:56:43 +02:00
ptrace.h [PATCH] Add regs_return_value() helper 2006-10-02 07:57:16 -07:00
qdio.h fix file specification in comments 2006-10-03 23:01:26 +02:00
qeth.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
reset.h [S390] Reset infrastructure for re-IPL. 2006-12-04 15:40:26 +01:00
resource.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
rwsem.h [S390] Inline assembly cleanup. 2006-09-28 16:56:43 +02:00
s390_ext.h [S390] irq change build fixes. 2006-10-06 16:38:35 +02:00
s390_rdev.h [PATCH] s390: email-address change 2006-01-14 18:27:10 -08:00
scatterlist.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
sections.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
segment.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
semaphore.h [S390] Inline assembly cleanup. 2006-09-28 16:56:43 +02:00
sembuf.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
setup.h [PATCH] cleanup asm/setup.h userspace visibility 2006-12-07 08:39:46 -08:00
sfp-machine.h [S390] Inline assembly cleanup. 2006-09-28 16:56:43 +02:00
shmbuf.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
shmparam.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
sigcontext.h [PATCH] s390: sigcontext.h vs __user 2006-01-14 18:27:08 -08:00
siginfo.h [PATCH] consolidate SIGEV_PAD_SIZE 2005-05-01 08:59:08 -07:00
signal.h [PATCH] irq-flags: S390: Use the new IRQF_ constants 2006-07-02 13:58:48 -07:00
sigp.h [S390] Inline assembly cleanup. 2006-09-28 16:56:43 +02:00
smp.h [S390] cpu shutdown rework 2006-12-04 15:40:33 +01:00
socket.h [AF_UNIX]: Datagram getpeersec 2006-06-29 16:58:06 -07:00
sockios.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
spinlock_types.h [PATCH] Directed yield: direct yield of spinlocks for s390. 2006-10-01 00:39:22 -07:00
spinlock.h [S390] incorrect placement of include. 2006-10-04 20:02:12 +02:00
stat.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
statfs.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
string.h [S390] Inline assembly cleanup. 2006-09-28 16:56:43 +02:00
suspend.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
system.h [S390] pfault code cleanup. 2006-12-04 15:40:40 +01:00
tape390.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
termbits.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
termios.h [S390] termio <-> termios conversion error handling. 2006-12-04 15:40:02 +01:00
thread_info.h [S390] preempt_count initialization. 2006-06-29 15:02:47 +02:00
timer.h [S390] irq change improvements. 2006-10-11 15:31:26 +02:00
timex.h [S390] Inline assembly cleanup. 2006-09-28 16:56:43 +02:00
tlb.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
tlbflush.h [S390] Inline assembly cleanup. 2006-09-28 16:56:43 +02:00
todclk.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
topology.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
types.h [PATCH] Centralise definitions of sector_t and blkcnt_t 2006-12-04 19:41:15 -08:00
uaccess.h [S390] Add __must_check to uaccess functions. 2006-12-04 15:39:55 +01:00
ucontext.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
unaligned.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
unistd.h [PATCH] remove kernel syscalls 2006-12-07 08:39:37 -08:00
user.h [PATCH] s390: uml ptrace fixes 2005-06-04 17:13:00 -07:00
vtoc.h Use __uXX types for S390 DASD volume label definitions which are user-visible 2006-05-04 01:18:33 +01:00
xor.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
zcrypt.h [S390] update interface notes in zcrypt.h 2006-12-04 15:40:00 +01:00