qemu/target
Michael Clark 33e3bc8d77
RISC-V: Hardwire satp to 0 for no-mmu case
satp is WARL so it should not trap on illegal writes, rather
it can be hardwired to zero and silently ignore illegal writes.

It seems the RISC-V WARL behaviour is preferred to having to
trap overhead versus simply reading back the value and checking
if the write took (saves hundreds of cycles and more complex
trap handling code).

Cc: Sagar Karandikar <sagark@eecs.berkeley.edu>
Cc: Bastian Koppelmann <kbastian@mail.uni-paderborn.de>
Cc: Palmer Dabbelt <palmer@sifive.com>
Cc: Alistair Francis <Alistair.Francis@wdc.com>
Signed-off-by: Michael Clark <mjc@sifive.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
2018-05-06 10:39:38 +12:00
..
alpha icount: fix cpu_restore_state_from_tb for non-tb-exit cases 2018-04-11 09:05:22 +10:00
arm target/arm: Make PMOVSCLR and PMUSERENR 64 bits wide 2018-04-26 11:04:39 +01:00
cris icount: fix cpu_restore_state_from_tb for non-tb-exit cases 2018-04-11 09:05:22 +10:00
hppa tcg: Improve TCGv_ptr support 2018-05-01 11:56:16 -07:00
i386 i386: Don't automatically enable FEAT_KVM_HINTS bits 2018-04-16 13:36:52 -03:00
lm32 cpu: get rid of unused cpu_init() defines 2018-03-19 14:10:36 -03:00
m68k m68k: remove dead code (Coverity CID1390617) 2018-05-01 15:37:20 +02:00
microblaze target-microblaze: mmu: Make the TLBX MISS bit read-only 2018-04-30 16:43:20 +02:00
mips cpu: get rid of unused cpu_init() defines 2018-03-19 14:10:36 -03:00
moxie icount: fix cpu_restore_state_from_tb for non-tb-exit cases 2018-04-11 09:05:22 +10:00
nios2 cpu: get rid of unused cpu_init() defines 2018-03-19 14:10:36 -03:00
openrisc icount: fix cpu_restore_state_from_tb for non-tb-exit cases 2018-04-11 09:05:22 +10:00
ppc QAPI patches for 2018-05-04 2018-05-04 13:49:08 +01:00
riscv RISC-V: Hardwire satp to 0 for no-mmu case 2018-05-06 10:39:38 +12:00
s390x QAPI patches for 2018-05-04 2018-05-04 13:49:08 +01:00
sh4 cpu: get rid of unused cpu_init() defines 2018-03-19 14:10:36 -03:00
sparc cpu: get rid of unused cpu_init() defines 2018-03-19 14:10:36 -03:00
tilegx cpu: get rid of unused cpu_init() defines 2018-03-19 14:10:36 -03:00
tricore icount: fix cpu_restore_state_from_tb for non-tb-exit cases 2018-04-11 09:05:22 +10:00
unicore32 cpu: get rid of unused cpu_init() defines 2018-03-19 14:10:36 -03:00
xtensa icount: fix cpu_restore_state_from_tb for non-tb-exit cases 2018-04-11 09:05:22 +10:00