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7e8403ecaf
In order to support the use of enhanced PCI instructions in both kernel- and userspace we need both hardware support and proper setup in the kernel. The latter can be toggled off with the pci=nomio command line option. Thus availability of this feature in userspace depends on all of kernel configuration (CONFIG_PCI), hardware support and the current kernel command line and can thus not rely solely on a facility bit. Instead let's introduce a new ELF hardware capability bit HWCAP_S390_PCI_MIO to tell userspace whether these PCI instructions can be used. Reviewed-by: Heiko Carstens <hca@linux.ibm.com> Signed-off-by: Niklas Schnelle <schnelle@linux.ibm.com> Signed-off-by: Heiko Carstens <hca@linux.ibm.com> |
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.. | ||
appldata | ||
boot | ||
configs | ||
crypto | ||
hypfs | ||
include | ||
kernel | ||
kvm | ||
lib | ||
mm | ||
net | ||
pci | ||
purgatory | ||
tools | ||
Kbuild | ||
Kconfig | ||
Kconfig.debug | ||
Makefile |