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| author | Peter Maydell | 2022-10-21 18:01:31 +0200 |
|---|---|---|
| committer | Peter Maydell | 2022-10-27 11:27:23 +0200 |
| commit | e4c93e44ab103f6c67abd85d620343f61aafa004 (patch) | |
| tree | 29ff31acaafd54705245a67e216b2e0cca8fc3e3 /docs/devel/build-system.rst | |
| parent | Merge tag 'dump-pull-request' of https://gitlab.com/marcandre.lureau/qemu int... (diff) | |
| download | qemu-e4c93e44ab103f6c67abd85d620343f61aafa004.tar.gz qemu-e4c93e44ab103f6c67abd85d620343f61aafa004.tar.xz qemu-e4c93e44ab103f6c67abd85d620343f61aafa004.zip | |
target/arm: Implement FEAT_E0PD
FEAT_E0PD adds new bits E0PD0 and E0PD1 to TCR_EL1, which allow the
OS to forbid EL0 access to half of the address space. Since this is
an EL0-specific variation on the existing TCR_ELx.{EPD0,EPD1}, we can
implement it entirely in aa64_va_parameters().
This requires moving the existing regime_is_user() to internals.h
so that the code in helper.c can get at it.
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 20221021160131.3531787-1-peter.maydell@linaro.org
Diffstat (limited to 'docs/devel/build-system.rst')
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