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path: root/arch/s390/kernel/cpcmd.c
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2007-10-12[S390] cpcmd: fix inline assembly usage.Heiko Carstens
After assigning values to specific registers memset was called. This may clobber the contents of the used registers. To solve this extract the two used inline assemblies into small functions that don't call any functions. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2007-02-05[S390] cpcmd with vmalloc addresses.Christian Borntraeger
Change the bounce buffer logic of cpcmd. diag8 needs _real_ memory below 2GB. Therefore vmalloced data does not work. As the data might cross a page boundary, we cannot use virt_to_page either. The solution is to use virt_to_page only in the check for a bounce buffer. There was a redundant check for response==NULL. response < 2GB contains this check as well. I also removed the rlen==0 check, since rlen=0 and response!=NULL would be a caller bug and response==NULL is already checked. Signed-off-by: Christian Borntraeger <cborntra@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2006-12-04[S390] cpcmd <-> __cpcmd calling issuesHeiko Carstens
In case of reipl cpcmd gets called when all other cpus are not running anymore. To prevent deadlocks change __cpcmd so that it doesn't take any locks and call cpcmd or __cpcmd, whatever is correct in the current context. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2006-09-28[S390] Inline assembly cleanup.Martin Schwidefsky
Major cleanup of all s390 inline assemblies. They now have a common coding style. Quite a few have been shortened, mainly by using register asm variables. Use of the EX_TABLE macro helps as well. The atomic ops, bit ops and locking inlines new use the Q-constraint if a newer gcc is used. That results in slightly better code. Thanks to Christian Borntraeger for proof reading the changes. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2006-01-06[PATCH] s390: cleanup KconfigMartin Schwidefsky
Sanitize some s390 Kconfig options. We have ARCH_S390, ARCH_S390X, ARCH_S390_31, 64BIT, S390_SUPPORT and COMPAT. Replace these 6 options by S390, 64BIT and COMPAT. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-08-23[PATCH] broken inline asm on s390 (misuse of labels)Al Viro
use of explicit labels in inline asm is a Bad Idea(tm), since gcc can decide to inline the function in several places. Fixed by use of 1f/f: instead of .Lfitsin/.Lfitsin: Signed-off-by: Al Viro <viro@parcelfarce.linux.theplanet.co.uk> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-06-25[PATCH] s390: add vmcp interfaceChristian Borntraeger
Add interface to issue VM control program commands. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-04-16Linux-2.6.12-rc2Linus Torvalds
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!