s390/mm,pgtable: don't use pte_val()/pXd_val() as lvalue

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Convert pgtable code so pte_val()/pXd_val() aren't used as lvalue
anymore. This allows in later step to convert pte_val()/pXd_val() to
functions, which in turn makes it impossible to use these macros to
modify page table entries like they have been used before.

Therefore a construct like this:

        pte_val(*pte) = __pa(addr) | prot;

which would directly write into a page table, isn't possible anymore
with the last step of this series.

Reviewed-by: Alexander Gordeev <agordeev@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>

...

This commit is contained in:

Heiko Carstens 2022-02-21 21:24:01 +01:00 • committed by Vasily Gorbik

parent b8e3b37900

commit 4a366f519a

2 changed files with 77 additions and 89 deletions

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144

arch/s390/include/asm/pgtable.h

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22

arch/s390/mm/pgtable.c

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