qemu/target
Peter Maydell 452a095526 arm: Clean up handling of no-MPU PMSA CPUs
ARM CPUs come in two flavours:
 * proper MMU ("VMSA")
 * only an MPU ("PMSA")
For PMSA, the MPU may be implemented, or not (in which case there
is default "always acts the same" behaviour, but it isn't guest
programmable).

QEMU is a bit confused about how we indicate this: we have an
ARM_FEATURE_MPU, but it's not clear whether this indicates
"PMSA, not VMSA" or "PMSA and MPU present" , and sometimes we
use it for one purpose and sometimes the other.

Currently trying to implement a PMSA-without-MPU core won't
work correctly because we turn off the ARM_FEATURE_MPU bit
and then a lot of things which should still exist get
turned off too.

As the first step in cleaning this up, rename the feature
bit to ARM_FEATURE_PMSA, which indicates a PMSA CPU (with
or without MPU).

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Alistair Francis <alistair.francis@xilinx.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-id: 1493122030-32191-5-git-send-email-peter.maydell@linaro.org
2017-06-02 11:51:47 +01:00
..
alpha shutdown: Add source information to SHUTDOWN and RESET 2017-05-23 13:28:17 +02:00
arm arm: Clean up handling of no-MPU PMSA CPUs 2017-06-02 11:51:47 +01:00
cris qom/cpu: move tlb_flush to cpu_common_reset 2017-01-13 14:24:31 +00:00
hppa hppa: avoid anonymous unions in designated initializers. 2017-03-04 12:52:01 +00:00
i386 shutdown: Add source information to SHUTDOWN and RESET 2017-05-23 13:28:17 +02:00
lm32 qom/cpu: move tlb_flush to cpu_common_reset 2017-01-13 14:24:31 +00:00
m68k This is the same as the v3 posted except a re-base and a few extra signoffs 2017-01-16 18:23:02 +00:00
microblaze cputlb: drop flush_global flag from tlb_flush 2017-01-13 14:24:37 +00:00
mips target/mips: fix delay slot detection in gen_msa_branch() 2017-03-20 11:19:14 +00:00
moxie qom/cpu: move tlb_flush to cpu_common_reset 2017-01-13 14:24:31 +00:00
nios2 target/nios2: take BQL around interrupt check 2017-03-14 13:26:37 +01:00
openrisc target/openrisc: Support non-busy idle state using PMR SPR 2017-05-04 09:39:14 +09:00
ppc target/ppc: reset reservation in do_rfi() 2017-05-24 11:39:52 +10:00
s390x QAPI patches for 2017-05-23 2017-05-30 09:33:40 +01:00
sh4 target/sh4: fix RTE instruction delay slot 2017-05-30 21:00:56 +02:00
sparc shutdown: Add source information to SHUTDOWN and RESET 2017-05-23 13:28:17 +02:00
tilegx qom/cpu: move tlb_flush to cpu_common_reset 2017-01-13 14:24:31 +00:00
tricore qom/cpu: move tlb_flush to cpu_common_reset 2017-01-13 14:24:31 +00:00
unicore32 cputlb: drop flush_global flag from tlb_flush 2017-01-13 14:24:37 +00:00
xtensa target/xtensa fixes for 2.9: 2017-03-18 17:24:49 +00:00