forked from luck/tmp_suning_uos_patched
ef3d3246a0
Allow an application to enable Strong Access Ordering on specific pages of memory on Power 7 hardware. Currently, power has a weaker memory model than x86. Implementing a stronger memory model allows an emulator to more efficiently translate x86 code into power code, resulting in faster code execution. On Power 7 hardware, storing 0b1110 in the WIMG bits of the hpte enables strong access ordering mode for the memory page. This patchset allows a user to specify which pages are thus enabled by passing a new protection bit through mmap() and mprotect(). I have defined PROT_SAO to be 0x10. Signed-off-by: Dave Kleikamp <shaggy@linux.vnet.ibm.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> |
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boot | ||
configs | ||
kernel | ||
kvm | ||
lib | ||
math-emu | ||
mm | ||
oprofile | ||
platforms | ||
sysdev | ||
xmon | ||
.gitignore | ||
Kconfig | ||
Kconfig.debug | ||
Makefile |