linux_dsm_epyc7002/arch/s390
Christian Ehrhardt 2ac3307f27 [S390] fix dfp elf hwcap/facility bit detection
The old dfp detection wanted to check bit 43 (dfp high performance), but due
to a wrong calculation always used to check bit 42. Additionally the
"userspace expectation" is, that the dfp capability bit is set is if facility
bit 42 (decimal floating point facility available) and bit 44 (perform floating
point operation facility avail).
The patch fixes the bit calculation and extends the check to work like:
  elf hw cap dfp bit = facility bits 42 (dfp) & 44 (pfpo) available

Signed-off-by: Christian Ehrhardt <ehrhardt@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2009-03-26 15:24:31 +01:00
..
appldata Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next-2.6 2008-12-28 12:49:40 -08:00
boot [PATCH] use ${CROSS_COMPILE}installkernel in arch/*/boot/install.sh 2005-06-23 09:45:07 -07:00
crypto [S390] use kzfree() 2009-03-26 15:24:29 +01:00
hypfs zero i_uid/i_gid on inode allocation 2009-01-05 11:54:28 -05:00
include/asm [S390] Use csum_partial in checksum.h 2009-03-26 15:24:27 +01:00
kernel [S390] fix dfp elf hwcap/facility bit detection 2009-03-26 15:24:31 +01:00
kvm [S390] split/move machine check handler code 2009-03-26 15:24:10 +01:00
lib [S390] use compiler builtin versions of strlen/strcpy/strcat 2009-03-26 15:24:24 +01:00
math-emu [S390] remove -traditional 2008-04-30 13:38:44 +02:00
mm [S390] move EXPORT_SYMBOLs to definitions 2009-03-26 15:24:11 +01:00
oprofile Combine instrumentation menus in kernel/Kconfig.instrumentation 2007-10-19 11:53:54 -07:00
defconfig [S390] Update default configuration. 2009-02-11 10:37:40 +01:00
Kconfig [S390] zfcpdump: Prevent zcore from beeing built as a kernel module. 2009-03-26 15:24:28 +01:00
Kconfig.debug [S390] DEBUG_PAGEALLOC support for s390. 2008-02-05 16:50:54 +01:00
Makefile [S390] Add processor type march=z10 and a processor type safety check. 2008-12-25 13:39:12 +01:00