John Baldwin fb97e58e5c Add stricter checks on user changes to SSTATUS. ... Rather than trying to blacklist which bits userland can't write to via sigreturn() or setcontext(), only permit changes to whitelisted bits. - Permit arbitrary writes to bits in the user-writable USTATUS register that shadows SSTATUS. - Ignore changes in write-only bits maintained by the CPU. - Ignore the user-supplied value of the FS field used to track floating point state and instead set it to a value matching the actions taken by set_fpcontext(). Discussed with: mhorne MFC after: 2 weeks Sponsored by: DARPA Differential Revision: https://reviews.freebsd.org/D23338		2020-01-31 19:00:48 +00:00
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conf	Include the PCI stack to the riscv GENERIC kernel.	2020-01-24 17:10:21 +00:00
include	Fix 64-bit value of SSTATUS_SD to use an unsigned long.	2020-01-31 17:49:15 +00:00
riscv	Add stricter checks on user changes to SSTATUS.	2020-01-31 19:00:48 +00:00
sifive	sifive: Fix incorrect tx/rx ctrl defines	2020-01-07 09:02:14 +00:00