| Message ID | 20211208231154.392029-1-richard.henderson@linaro.org |
|---|---|
| Headers | show |
| Series | target/arm: Implement LVA, LPA, LPA2 features | expand |
Richard Henderson <richard.henderson@linaro.org> writes: > These features are all related and relatively small. > > Testing so far has been limited to booting a kernel > with 64k pages and VA and PA set to 52 bits, which > excercises LVA and LPA. Do any distros ship with 64k pages that we could use for an avocado test? > There is not yet upstream support for LPA2, probably > because it's an ARMv8.7 addition. I guess we can defer adding tests for this until better upstream support. Are there any WIP branches to test with? I've CC'd the kernel guys. > > > r~ > > > Richard Henderson (6): > target/arm: Fault on invalid TCR_ELx.TxSZ > target/arm: Move arm_pamax out of line > target/arm: Honor TCR_ELx.{I}PS > target/arm: Implement FEAT_LVA > target/arm: Implement FEAT_LPA > target/arm: Implement FEAT_LPA2 > > target/arm/cpu-param.h | 4 +- > target/arm/cpu.h | 17 ++++ > target/arm/internals.h | 22 +---- > target/arm/cpu64.c | 5 +- > target/arm/helper.c | 211 ++++++++++++++++++++++++++++++++++------- > 5 files changed, 204 insertions(+), 55 deletions(-)
On 12/14/21 8:37 AM, Alex Bennée wrote: > > Richard Henderson <richard.henderson@linaro.org> writes: > >> These features are all related and relatively small. >> >> Testing so far has been limited to booting a kernel >> with 64k pages and VA and PA set to 52 bits, which >> excercises LVA and LPA. > > Do any distros ship with 64k pages that we could use for an avocado > test? Well, RHEL 8 has 64k pages but with a 48-bit address space. There are separate kernel configuration options for 52-bits. r~
On Wed, 8 Dec 2021 at 23:14, Richard Henderson <richard.henderson@linaro.org> wrote: > > These features are all related and relatively small. > > Testing so far has been limited to booting a kernel > with 64k pages and VA and PA set to 52 bits, which > excercises LVA and LPA. > > There is not yet upstream support for LPA2, probably > because it's an ARMv8.7 addition. > target/arm/cpu-param.h | 4 +- > target/arm/cpu.h | 17 ++++ > target/arm/internals.h | 22 +---- > target/arm/cpu64.c | 5 +- > target/arm/helper.c | 211 ++++++++++++++++++++++++++++++++++------- > 5 files changed, 204 insertions(+), 55 deletions(-) I'd forgotten about this document too until a conversation today brought it to mind, but when adding new feature support please also update the list of supported emulated features in docs/system/arm/emulation.rst thanks -- PMM
These features are all related and relatively small. Testing so far has been limited to booting a kernel with 64k pages and VA and PA set to 52 bits, which excercises LVA and LPA. There is not yet upstream support for LPA2, probably because it's an ARMv8.7 addition. r~ Richard Henderson (6): target/arm: Fault on invalid TCR_ELx.TxSZ target/arm: Move arm_pamax out of line target/arm: Honor TCR_ELx.{I}PS target/arm: Implement FEAT_LVA target/arm: Implement FEAT_LPA target/arm: Implement FEAT_LPA2 target/arm/cpu-param.h | 4 +- target/arm/cpu.h | 17 ++++ target/arm/internals.h | 22 +---- target/arm/cpu64.c | 5 +- target/arm/helper.c | 211 ++++++++++++++++++++++++++++++++++------- 5 files changed, 204 insertions(+), 55 deletions(-)