Thiemo Seufer wrote: > Manish Lachwani wrote: > > Hello ! > > > > In what way does it break? Can you please provide more > > details. Also, does it break on UP or SMP? > > Userland starts to fail for simple tasks like 'ls -la'. The test was > done with 64bit SMP on a board which needs the m3 workaround. The > current CVS version works. > > I guess the failure is caused by some missing bits for the m3 > workaround which only show up for the optimized handlers in 64bit mode. Actually, it was caused by a stupid bug. The label to restart the TLB modification on concurrent SMP updates was defined twice, meaning it failed to re-execute the first half. This also means that current 32bit SMP kernels have an easily observable race condition there. I updated the patch now and checked it in. Please test, especially for cases I couldn't do, like R3000-style TLB handling and MIPS32 CPUs with 64bit physaddr. Thiemo
