[PATCH v3] arm64/mm: add fallback option to allocate virtually contiguous memory

From: Sudarshan Rajagopalan
Date: Wed Oct 14 2020 - 20:56:39 EST


V1: The initial patch used the approach to abort at the first instance of PMD_SIZE
allocation failure, unmaps all previously mapped sections using vmemmap_free
and maps the entire request with vmemmap_populate_basepages to allocate
virtually contiguous memory.
https://lkml.org/lkml/2020/9/10/66

V2: Allocates virtually contiguous memory only for sections that failed
PMD_SIZE allocation, and continous to allocate physically contiguous
memory for other sections.
https://lkml.org/lkml/2020/9/30/1489

V3: Addressed trivial review comments. Pass in altmap to vmemmap_populate_basepages.

Sudarshan Rajagopalan (1):
arm64/mm: add fallback option to allocate virtually contiguous memory

arch/arm64/mm/mmu.c | 7 +++++--
1 file changed, 5 insertions(+), 2 deletions(-)

--
Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum,
a Linux Foundation Collaborative Project