Il gio 12 set 2019, 19:43 Richard Henderson <richard.hender...@linaro.org> ha scritto:
> >>> Fortunately, in order to fix it, no change is required to the > >>> vCPU thread. However, the reader thread must delay the read after > >>> the vCPU thread has finished the write. This can be approximated > >>> conservatively by run_on_cpu, which waits for the end of the current > >>> translation block. > > If we are going to delay any read of the dirty flags until vCPU has > completed > any active TranslationBlock, then we can simplify the TCG operation so > that we > do not (ab)use the mmio path, and can promote this into the tlb slow path > as we > have recently done with watchpoints. Uh, that's true and I agree it would be great. Die notdirty_mem_ops die... Paolo
