• Feng Kan's avatar
    arm64: enable PTE type bit in the mask for pte_modify · 6910fa16
    Feng Kan authored
    Caught during Trinity testing. The pte_modify does not allow
    modification for PTE type bit. This cause the test to hang
    the system. It is found that the PTE can't transit from an
    inaccessible page (b00) to a valid page (b11) because the mask
    does not allow it. This happens when a big block of mmaped
    memory is set the PROT_NONE, then the a small piece is broken
    off and set to PROT_WRITE | PROT_READ cause a huge page split.
    Signed-off-by: default avatarFeng Kan <fkan@apm.com>
    Signed-off-by: default avatarCatalin Marinas <catalin.marinas@arm.com>
    6910fa16
pgtable.h 15.3 KB