target/arm: Implement FEAT_LVA

This feature is relatively small, as it applies only to
64k pages and thus requires no additional changes to the
table descriptor walking algorithm, only a change to the
minimum TSZ (which is the inverse of the maximum virtual
address space size).

Note that this feature widens VBAR_ELx, but we already
treat the register as being 64 bits wide.

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20220301215958.157011-10-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Richard Henderson 2022-03-01 11:59:49 -10:00 committed by Peter Maydell
parent 777ab8d844
commit 0af312b6ed
5 changed files with 16 additions and 2 deletions

View file

@ -11,7 +11,7 @@
#ifdef TARGET_AARCH64
# define TARGET_LONG_BITS 64
# define TARGET_PHYS_ADDR_SPACE_BITS 48
# define TARGET_VIRT_ADDR_SPACE_BITS 48
# define TARGET_VIRT_ADDR_SPACE_BITS 52
#else
# define TARGET_LONG_BITS 32
# define TARGET_PHYS_ADDR_SPACE_BITS 40