On Mon, Dec 21, 2020 at 11:14:39AM -0800, Nick Desaulniers wrote: > On Wed, Sep 2, 2020 at 7:31 PM Arvind Sankar <nived...@alum.mit.edu> wrote: > > > > When CONFIG_RETPOLINE is disabled, Clang uses a jump table for the > > switch statement in cmdline_find_option (jump tables are disabled when > > CONFIG_RETPOLINE is enabled). This function is called very early in boot > > from sme_enable() if CONFIG_AMD_MEM_ENCRYPT is enabled. At this time, > > Hi Arvind, sorry I missed this when you first sent it. I'm going > through and mass deleting my inbox (email bankruptcy) but noticed > this. I couldn't reproduce jump tables in cmdline_find_option with > CONFIG_RETPOLINE disabled but CONFIG_AMD_MEM_ENCRYPT on today's > linux-next. Can you please confirm that this is still an issue? I will > reread the disassembly, but it looks like a bunch of cmp/test+jumps. >
The patch got merged and is in v5.10 -- are you testing with it reverted or just plain linux-next?
