When LPA2 is enabled the shareability attribute in the page table are
replaces with output address bits. To support a larger physical address
space make this attribute dynamic so we only set it when appropriate.
Sponsored by: Arm Ltd
Details
Details
Diff Detail
Diff Detail
- Repository
- rG FreeBSD src repository
- Lint
Lint Not Applicable - Unit
Tests Not Applicable
Event Timeline
| sys/arm64/include/pte.h | ||
|---|---|---|
| 114 ↗ | (On Diff #142300) | Why not include pmap_sh_attr here? |
| sys/arm64/include/pte.h | ||
|---|---|---|
| 114 ↗ | (On Diff #142300) | We can't because it's used in locore.S |
| sys/arm64/arm64/pmap.c | ||
|---|---|---|
| 358 | Again, should it be __read_mostly? | |
| sys/arm64/include/pte.h | ||
|---|---|---|
| 114 ↗ | (On Diff #142300) | At this point, where ATTR_DEFAULT is simply ATTR_AF, I'm going to argue for its elimination. Instead, put ATTR_AF in its place. There are places where we construct the mapping with ATTR_DEFAULT, then later clear ATTR_AF. Instead, these could simply not set ATTR_AF in the first place, and only set it if the mapping is unmanaged. |
Comment Actions
- Rebase on D46466
- Add __read_mostly
- Set VTCR_EL2.DS as stage 2 tables are also affected