[ Joerg, sending again this time not just to you. (hit reply to sender and not reply to all). Feel free to resend what you wrote before to this ]
On Thu, 30 Apr 2020 21:14:34 +0200 Joerg Roedel <jroe...@suse.de> wrote: > And alloc_percpu() calls down into pcpu_alloc(), which allocates new > percpu chunks using vmalloc() on x86. And there we are again in the > vmalloc area. So after a vmalloc() is made, should the page tables be synced? This is a rather subtle bug, and I don't think it should be the caller of percpu_alloc() that needs to call vmalloc_sync_mappings(). What's your suggestion for a fix? -- Steve
