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SubjectRe: [PATCH] powerpc/book3s64: fix dump_linuxpagetables "present" flag
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On 10/15/18 12:07 PM, Christophe Leroy wrote:
> Since commit bd0dbb73e013 ("powerpc/mm/books3s: Add new pte bit to
> mark pte temporarily invalid."), _PAGE_PRESENT doesn't mean exactly
> that a page is present. A page is also considered preset when
> _PAGE_INVALID is set.
>
> This patch changes the meaning of "present" and adds a status "valid"
> associated to the _PAGE_PRESENT flag.
>

Reviewed-by: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com>

> Fixes: bd0dbb73e013 ("powerpc/mm/books3s: Add new pte bit to mark pte temporarily invalid.")
> Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
> ---
> arch/powerpc/mm/dump_linuxpagetables-book3s64.c | 9 +++++++--
> 1 file changed, 7 insertions(+), 2 deletions(-)
>
> diff --git a/arch/powerpc/mm/dump_linuxpagetables-book3s64.c b/arch/powerpc/mm/dump_linuxpagetables-book3s64.c
> index a637e612b205..ed6fcf78256e 100644
> --- a/arch/powerpc/mm/dump_linuxpagetables-book3s64.c
> +++ b/arch/powerpc/mm/dump_linuxpagetables-book3s64.c
> @@ -38,8 +38,13 @@ static const struct flag_info flag_array[] = {
> }, {
> .mask = _PAGE_PRESENT,
> .val = _PAGE_PRESENT,
> - .set = "present",
> - .clear = " ",
> + .set = "valid",
> + .clear = " ",
> + }, {
> + .mask = _PAGE_PRESENT | _PAGE_INVALID,
> + .val = 0,
> + .set = " ",
> + .clear = "present",
> }, {
> .mask = H_PAGE_HASHPTE,
> .val = H_PAGE_HASHPTE,
>

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