On Mon, Feb 26, 2024 at 02:22:30PM +0200, Nikolay Borisov wrote: > Here's the recently merged mds improvement patches adapted to latest stable tree. > I've only compile tested them, but since I have also done similar backports for > older kernels I'm sure they should work. > The main difference is in the definition of the CLEAR_CPU_BUFFERS macro since > 5.4 doesn't contains the alternative relocation handling logic hence the verw > instruction is moved out of the alternative definition and instead we have a jump which > skips the verw instruction there. That way the relocation will be handled by the > toolchain rather than the kernel. > > Since I don't know if I will have time to work on the other branches this patchset > can be used as basis for the rest of the stable kernels. The main difference would be > which bit is used for CLEAR_CPU_BUFFERS. For kernel 6.6 the 2nd patch can be used verbatim > from upstrem (unlike this modified version) since the alternative relocation > did land in v6.5. However, even if used as-is from this patchset it's not a problem. As mentioned on IRC, I can't take these now, without the newer branches fixed first, otherwise someone could upgrade and have a regression. So I'll hold off on these until we backports for all of the other stable trees as well. thanks, greg k-h
