Hello Jan,
Jan Beulich <jbeul...@suse.com> writes: > On 11.12.2024 03:04, Volodymyr Babchuk wrote: >> Both GCC and Clang support -fstack-protector feature, which add stack >> canaries to functions where stack corruption is possible. This series >> makes possible to use this feature in Xen. I tested this on ARM64 and >> it is working as intended. Tested both with GCC and Clang. >> >> It is hard to enable this feature on x86, as GCC stores stack canary >> in %fs:40 by default, but Xen can't use %fs for various reasons. It is >> possibly to change stack canary location new newer GCC versions, but >> this will change minimal GCC requirement, which is also hard due to >> various reasons. So, this series focus mostly on ARM and RISCV. > > Why exactly would it not be possible to offer the feature when new enough > gcc is in use? It is possible to use this feature with a modern enough GCC, yes. Are you suggesting to make HAS_STACK_PROTECTOR dependent on GCC_VERSION for x86 platform? -- WBR, Volodymyr
