tree dddbd37cf16af1a9736189aab1d5d7dc31e2fd01
parent c67363eef051e7334935e6009286da7f7a73831d
author Nikos Nikoleris <nikos.nikoleris@arm.com> 1604495032 +0000
committer Andrew Jones <drjones@redhat.com> 1605093815 +0100

arm64: Add support for configuring the translation granule

Make the translation granule configurable for arm64. arm64 supports
page sizes of 4K, 16K and 64K. By default, arm64 is configured with
64K pages. configure has been extended with a new argument:

 --page-size=PAGE_SIZE

which allows the user to set the page shift and therefore the page
size for arm64. Using the --page-size for any other architecture
results an error message.

In addition, bump the VA size from 42 to 48 bits. To enable 48 bit
VAs for all translation granules, add support for 4-level and 3-level
page tables. At compile time, we determine how many levels in the page
tables we needed.

Reviewed-by: Andrew Jones <drjones@redhat.com>
Reviewed-by: Alexandru Elisei <alexandru.elisei@arm.com>
Tested-by: Alexandru Elisei <alexandru.elisei@arm.com>
Signed-off-by: Nikos Nikoleris <nikos.nikoleris@arm.com>
Signed-off-by: Andrew Jones <drjones@redhat.com>