On Sun, 16 Apr 2023 11:39:44 -0700 Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> wrote: > On Wed, 12 Apr 2023 14:22:36 -0700 Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> wrote: > > > On Sun, 19 Mar 2023 11:37:50 +0800 "buddy.zhang" <buddy.zhang@xxxxxxxxxxxx> wrote: > > > > > On X86 architecture, supports memory type on Page-table, such as > > > PTE is PAT/PCD/PWD, which can setup up Memory Type as WC/WB/WT/UC etc. > > > Then, Virtual address from userspace or kernel space can map to > > > same physical page, if each page table has different memory type, > > > then it's confused to have more memory type for same physical page. > > > > Thanks. Nobody has worked on this code for a long time. I'll cc a few > > folks who may be able to comment. > > > > Well that didn't go very well. > > Buddy, can you please explain what are the user-visible effects of the > bug? Does the kernel crash? Memory corruption, etc? Thanks. > Anyone?
