On Tue, 2017-05-16 at 22:20 +0200, LEROY Christophe wrote: > Balbir Singh <bsinghar...@gmail.com> a écrit : > > > patch_instruction is enhanced in this RFC to support > > patching via a different virtual address (text_poke_area). > > The mapping of text_poke_area->addr is RW and not RWX. > > This way the mapping allows write for patching and then we tear > > down the mapping. The downside is that we introduce a spinlock > > which serializes our patching to one patch at a time. > > Very nice patch, would fit great with my patch for impmementing > CONFIG_DEBUG_RODATA (https://patchwork.ozlabs.org/patch/754289 ). > Would avoid having to set the text area back to RW for patching >
Awesome! It seems like you have some of the work for CONFIG_STRICT_KERNEL_RWX any reason why this is under CONFIG_DEBUG_RODATA? But I think there is reuse capability across the future patches and the current set. Cheers, Balbir Singh.
