On 21.02.24 08:13, Christophe Leroy wrote:
Le 20/02/2024 à 21:32, Maxwell Bland a écrit :
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While other descriptors (e.g. pud) allow allocations conditional on
which virtual address is allocated, pmd descriptor allocations do not.
However, adding support for this is straightforward and is beneficial to
future kernel development targeting the PMD memory granularity.
As many architectures already implement pmd_populate_kernel in an
address-generic manner, it is necessary to roll out support
incrementally. For this purpose a preprocessor flag,
Is it really worth it ? It is only 48 call sites that need to be
updated. It would avoid that processor flag and avoid introducing that
pmd_populate_kernel_at() in kernel core.
+1, let's avoid that if possible.
--
Cheers,
David / dhildenb
