ARM: 7302/1: Add TLB flushing for both entries in a PMD
Linux uses two PMD entries for a PTE with the classic page table format, covering 2MB range. However, the __pte_free_tlb() function only adds a single TLB flush corresponding to 1MB range covering 'addr'. On Cortex-A15, level 1 entries can be cached by the TLB independently of the level 2 entries and without additional flushing a PMD entry would be left pointing at the wrong PTE. The patch limits the TLB flushing range to two 4KB pages around the 1MB boundary within PMD. Signed-off-by:Catalin Marinas <catalin.marinas@arm.com> Signed-off-by:
Russell King <rmk+kernel@arm.linux.org.uk>
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