John Baldwin 5a02cd314d Trim duplicate CSR swaps from user exceptions. ... The stack pointer is swapped with the sscratch CSR just before the jump to cpu_exception_handler_user where the first instruction swaps it again. The two swaps together are a no-op, but the csr swap instructions can be expensive (e.g. on Bluespec RISC-V cores csr swap instructions force a full pipeline stall). Reported by: jrtc27 Reviewed by: br MFC after: 2 weeks Sponsored by: DARPA Differential Revision: https://reviews.freebsd.org/D23394		2020-01-30 22:19:48 +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	Remove unused fields from struct pcb.	2020-01-30 19:15:27 +00:00
riscv	Trim duplicate CSR swaps from user exceptions.	2020-01-30 22:19:48 +00:00
sifive	sifive: Fix incorrect tx/rx ctrl defines	2020-01-07 09:02:14 +00:00