arm64: Fix pte_modify() to preserve the hardware dirty information
The pte_modify() function with hardware AF/DBM enabled must transfer the hardware dirty information to the software PTE_DIRTY bit. However, it was setting this bit in newprot and the mask does not cover such bit. This patch sets PTE_DIRTY on the original pte which will be preserved in the returned value. Fixes: 2f4b829c ("arm64: Add support for hardware updates of the access and dirty pte bits") Cc: Julien Grall <julien.grall@citrix.com> Tested-by: Julien Grall <julien.grall@citrix.com> Tested-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
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