On Mon, Feb 17, 2025 at 02:04:16PM +0000, Ryan Roberts wrote:
commit c910f2b65518 ("arm64/mm: Update tlb invalidation routines for FEAT_LPA2") changed the "invalidation level unknown" hint from 0 to TLBI_TTL_UNKNOWN (INT_MAX). But the fallback "unknown level" path in flush_hugetlb_tlb_range() was not updated. So as it stands, when trying to invalidate CONT_PMD_SIZE or CONT_PTE_SIZE hugetlb mappings, we will spuriously try to invalidate at level 0 on LPA2-enabled systems.
Fix this so that the fallback passes TLBI_TTL_UNKNOWN, and while we are at it, explicitly use the correct stride and level for CONT_PMD_SIZE and CONT_PTE_SIZE, which should provide a minor optimization.
Cc: stable@vger.kernel.org Fixes: c910f2b65518 ("arm64/mm: Update tlb invalidation routines for FEAT_LPA2") Signed-off-by: Ryan Roberts ryan.roberts@arm.com
Reviewed-by: Catalin Marinas catalin.marinas@arm.com