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b7312c3d |
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31-Jul-2024 |
Mitchell Horne <mhorne@FreeBSD.org> |
riscv: Svpbmt extension support The Svpbmt extension provides specification of "Page-Based Memory Types", or memory attributes (e.g. cacheability constraints). Extend the pmap code to apply memory attributes when creating/updating PTEs. This is done in a way which has no effect on CPUs lacking Svpbmt support, and is non-hostile to alternate encodings of memory attributes -- a future change will enable this for T-HEAD CPUs, which implement this PTE feature in an different (incompatible) way. Reviewed by: jhb Tested by: br MFC after: 2 weeks Sponsored by: The FreeBSD Foundation Differential Revision: https://reviews.freebsd.org/D45471
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8d7e7a98 |
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17-Dec-2015 |
Ruslan Bukin <br@FreeBSD.org> |
Import RISC-V machine headers. This is a minimal set required to compile kernel and userland. Reviewed by: andrew, imp, kib Sponsored by: DARPA, AFRL Sponsored by: HEIF5 Differential Revision: https://reviews.freebsd.org/D4554
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