Refer to the draft of svukte extension from:
https://github.com/riscv/riscv-isa-manual/pull/1564
Svukte provides a means to make user-mode accesses to supervisor memory
raise page faults in constant time, mitigating attacks that attempt to
discover the supervisor software's address-space layout.
base-commit: 8d0a03f689bff16c93df311fdd724c2736d28556
* Add svukte extension
Fea.Wang (5):
target/riscv: Add svukte extension capability variable
target/riscv: Support senvcfg[UKTE] bit when svukte extension is
enabled
target/riscv: Support hstatus[HUKTE] bit when svukte extension is
enabled
target/riscv: Check memory access to meet svuket rule
target/riscv: Expose svukte ISA extension
target/riscv/cpu.c | 2 ++
target/riscv/cpu_bits.h | 2 ++
target/riscv/cpu_cfg.h | 1 +
target/riscv/cpu_helper.c | 55 +++++++++++++++++++++++++++++++++++++++
target/riscv/csr.c | 7 +++++
5 files changed, 67 insertions(+)
--
2.34.1
