However, as a pragmatic system architect, I see no reason to eschew the MMU in favor of any of these. In fact, the MMU is composable with all of these primitives – it’s valid to have both a PMP and an MMU in the same RISC-V CPU. And, even if you’re using a CHERI-like technology for hardware-enforced bounds checking on pointers, it still doesn’t allow for transparent address space relocation. Without page-based virtual memory, each program would need to be linked to a distinct, non-overlapping region of physical address space at compile time, and you couldn’t have swap memory.
It’s hard to pick a day when the publishing industry made its deal with the devil. But an anecdote recently shared by Steve Wasserman is as good a place to begin as any.
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Ivey reduced Charles “Sonny” Burton’s sentence to life in prison without possibility of parole. Burton was sentenced to death for the shooting death of Doug Battle during a 1991 robbery. However, another man shot Battle when Burton had left the building. The shooter’s death sentence was later reduced on appeal to life imprisonment.
Ваня Дмитриенко выступит на ГАРАЖ ФЕСТ Игора Драйв в Санкт-Петербурге14:45
Article InformationAuthor, 凱瑟琳·維亞特（Catherine Wyatt）