-
Yanan Wang authored
When dirty logging is enabled, we collapse block entries into tables as necessary. If dirty logging gets canceled, we can end-up merging tables back into block entries. When this happens, we must not only free the non-huge page-table pages but also invalidate all the TLB entries that can potentially cover the block. Otherwise, we end-up with multiple possible translations for the same physical page, which can legitimately result in a TLB conflict. To address this, replease the bogus invalidation by IPA with a full VM invalidation. Although this is pretty heavy handed, it happens very infrequently and saves a bunch of invalidations by IPA. Signed-off-by: Yanan Wang <wangyanan55@huawei.com> [maz: fixup commit message] Signed-off-by: Marc Zyngier <maz@kernel.org> Acked-by: Will Deacon <will@kernel.org> Link: https://lore.kernel.org/r/20201201201034.116760-3-wangyanan55@huawei.com
3a0b870e