Re: [Qemu-devel] [PATCH v1 8/8] RISC-V: Add misa runtime write support

2019-01-24 Thread Palmer Dabbelt
On Mon, 14 Jan 2019 15:59:00 PST (-0800), Alistair Francis wrote: From: Michael Clark This patch adds support for writing misa. misa is validated based on rules in the ISA specification. 'E' is mutually exclusive with all other extensions. 'D' depends on 'F' so 'D' bit is dropped if 'F' is not

[Qemu-devel] [PATCH v1 8/8] RISC-V: Add misa runtime write support

2019-01-14 Thread Alistair Francis
From: Michael Clark This patch adds support for writing misa. misa is validated based on rules in the ISA specification. 'E' is mutually exclusive with all other extensions. 'D' depends on 'F' so 'D' bit is dropped if 'F' is not present. A conservative approach to consistency is taken by flushing