In message <[EMAIL PROTECTED]> you wrote : > > On Jun 19, 2008, at 11:13 PM, Michael Neuling wrote: > > > The following set of patches adds Vector Scalar Extentions (VSX) > > support for POWER7. Includes context switch, ptrace and signals > > support. > > > > Signed-off-by: Michael Neuling <[EMAIL PROTECTED]> > > --- > > Paulus: please consider for your 2.6.27 tree. > > > > Updated with comments from Kumar, Milton, Dave Woodhouse and Mark > > 'NKOTB' Nelson. > > - Changed thread_struct array definition to be cleaner > > - Updated CPU_FTRS_POSSIBLE > > - Updated Kconfig typo and dupilicate > > - Added comment to clarify ibm,vmx = 2 really means VSX. > > One question I was wondering about is the "user space" view of VSX. > Is the intent to have it seem like there is a unique register set for > VSX separate from FP or AltiVec?
For userspace it's not a unique register set. So if you execute FP code in the middle of your VSX code, you change VSX registers 0-31. Userspace will see the same as if it was running natively on the CPU. > (This gets into what the ABI changes look like). Signals and ptrace interfaces have been kept backwards compatible. Mikey _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@ozlabs.org https://ozlabs.org/mailman/listinfo/linuxppc-dev
