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authorCatalin Marinas <catalin.marinas@arm.com>2015-11-26 15:42:41 +0000
committerCatalin Marinas <catalin.marinas@arm.com>2015-11-26 15:42:41 +0000
commit667c27597ca823f20c524bbd486c6709f905673b (patch)
tree31c7925b3532fe99303ce1172547909803ee25a1 /net
parent0ebea8088095f1c18c1d1de284ccc4c479ca21c1 (diff)
Revert "arm64: Mark kernel page ranges contiguous"
This reverts commit 348a65cdcbbf243073ee39d1f7d4413081ad7eab. Incorrect page table manipulation that does not respect the ARM ARM recommended break-before-make sequence may lead to TLB conflicts. The contiguous PTE patch makes the system even more susceptible to such errors by changing the mapping from a single page to a contiguous range of pages. An additional TLB invalidation would reduce the risk window, however, the correct fix is to switch to a temporary swapper_pg_dir. Once the correct workaround is done, the reverted commit will be re-applied. Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> Reported-by: Jeremy Linton <jeremy.linton@arm.com>
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