There has been a lot of churn the past few months on various mitigations for our favorite vulnerabilities. By April, the dust should have settled enough for us to take a look back at the impact on the VM from all this churn. Although a lot of action happened in arch/*, I think there is still plenty to discuss that affects the VM. For instance, the entry/exit paths have changed for everyone which changes page fault behavior. On x86, the TLB behavior is different because of more copies of the page tables that we switch between more frequently, in addition to the changes resulting from the PCID work[1]. powerpc/Meltdown: Nicholas Piggin <npiggin@xxxxxxxxx> Michael Ellerman <mpe@xxxxxxxxxxxxxx> arm64/Meltdown: Will Deacon <will.deacon@xxxxxxx> x86/Meltdown: Andy Lutomirski <luto@xxxxxxxxxxxxxx> Thomas Gleixner <tglx@xxxxxxxxxxxxx> Dave Hansen <dave.hansen@xxxxxxxxx> 1. https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=660da7c9228f685b2ebe664f9fd69aaddcc420b5 -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>
