On 10/17/18 4:08 PM, Andi Kleen wrote: > On Wed, Oct 17, 2018 at 12:56:10PM +0200, Pavel Machek wrote: >> Hi! >> >> 6a012288 suggests I throw away 1GB on RAM. On 3GB system.. that is not >> going to be pleasant. > > Just rebuild your kernel with PAE? I assume your CPU supports it.
I think it is built with PAE or this would kick in: #if CONFIG_PGTABLE_LEVELS == 2 pr_warn("Kernel not compiled for PAE. No mitigation for L1TF\n"); return; #endif I.e. no MAX_PA/2 messages. > This will also give you NX, which if you're really worried > about security is far more important than L1TF. > > If you don't worry about security just ignore. > > -Andi >