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cff21316c6
qemu/target/arm
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Peter Maydell cff21316c6 target/arm: v8M MPU should use background region as default, not always 
The "background region" for a v8M MPU is a default which will be used
(if enabled, and if the access is privileged) if the access does
not match any specific MPU region. We were incorrectly using it
always (by putting the condition at the wrong nesting level). This
meant that we would always return the default background permissions
rather than the correct permissions for a specific region, and also
that we would not return the right information in response to a
TT instruction.

Move the check for the background region to the same place in the
logic as the equivalent v8M MPUCheck() pseudocode puts it.
This in turn means we must adjust the condition we use to detect
matches in multiple regions to avoid false-positives.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20190214113408.10214-1-peter.maydell@linaro.org
2019-02-21 18:17:45 +00:00
..
arch_dump.c target/arm: Add aa{32, 64}_vfp_{dreg, qreg} helpers 2018-01-25 11:45:29 +00:00
arm_ldst.h target: Do not include "exec/exec-all.h" if it is not necessary 2018-06-01 14:15:10 +02:00
arm-powerctl.c arm: Clarify the logic of set_pc() 2019-02-01 14:55:46 +00:00
arm-powerctl.h target-arm/powerctl: defer cpu reset work to CPU context 2017-02-24 10:32:46 +00:00
arm-semi.c target/arm: Remove a handful of stray tabs 2018-08-24 13:17:48 +01:00
cpu64.c target/arm: Enable BTI for -cpu max 2019-02-05 16:52:38 +00:00
cpu-qom.h arm: replace instance_post_init() 2019-01-07 16:18:42 +04:00
cpu.c target/arm: Enable TBI for user-only 2019-02-05 16:52:40 +00:00
cpu.h target/arm: Split out FPSCR.QC to a vector field 2019-02-15 09:56:41 +00:00
crypto_helper.c target: Do not include "exec/exec-all.h" if it is not necessary 2018-06-01 14:15:10 +02:00
gdbstub64.c
gdbstub.c arm: fix malloc type mismatch 2018-05-31 14:50:52 +01:00
helper-a64.c target/arm: Fix int128_make128 lo, hi order in paired_cmpxchg64_be 2019-02-15 09:56:38 +00:00
helper-a64.h target/arm: Add new_pc argument to helper_exception_return 2019-01-21 10:38:53 +00:00
helper-sve.h target/arm: Rewrite vector gather first-fault loads 2018-10-08 14:55:03 +01:00
helper.c target/arm: v8M MPU should use background region as default, not always 2019-02-21 18:17:45 +00:00
helper.h target/arm: Use vector operations for saturation 2019-02-15 09:56:41 +00:00
idau.h qom: make interface types abstract 2018-12-11 15:45:22 -02:00
internals.h target/arm: Compute TB_FLAGS for TBI for user-only 2019-02-05 16:52:40 +00:00
iwmmxt_helper.c target/arm: Untabify iwmmxt_helper.c 2018-08-24 13:17:48 +01:00
kvm32.c arm: Allow system registers for KVM guests to be changed by QEMU code 2019-02-15 09:56:39 +00:00
kvm64.c arm: Allow system registers for KVM guests to be changed by QEMU code 2019-02-15 09:56:39 +00:00
kvm_arm.h target/arm: Install ARMISARegisters from kvm host 2018-11-19 15:29:07 +00:00
kvm-consts.h arm: add trailing ; after MISMATCH_CHECK 2017-02-01 03:37:18 +02:00
kvm-stub.c
kvm.c qemu/queue.h: leave head structs anonymous unless necessary 2019-01-11 15:46:55 +01:00
machine.c arm: Allow system registers for KVM guests to be changed by QEMU code 2019-02-15 09:56:39 +00:00
Makefile.objs target/arm: Add PAuth helpers 2019-01-21 10:38:53 +00:00
monitor.c qapi: make query-gic-capabilities depend on TARGET_ARM 2019-02-18 14:44:05 +01:00
neon_helper.c target/arm: Split out FPSCR.QC to a vector field 2019-02-15 09:56:41 +00:00
op_addsub.h
op_helper.c target/arm: Move helper_exception_return to helper-a64.c 2019-01-21 10:38:53 +00:00
pauth_helper.c target/arm: Implement pauth_computepac 2019-01-21 10:38:55 +00:00
psci.c target: Do not include "exec/exec-all.h" if it is not necessary 2018-06-01 14:15:10 +02:00
sve_helper.c target/arm/sve_helper: Fix compilation with clang 3.4 2018-11-28 15:31:15 +00:00
sve.decode target/arm: SVE brk[ab] merging does not have s bit 2019-01-07 15:23:45 +00:00
trace-events target/arm/kvm: Translate the MSI doorbell in kvm_arch_fixup_msi_route 2018-05-04 18:52:58 +01:00
translate-a64.c target/arm: Use vector operations for saturation 2019-02-15 09:56:41 +00:00
translate-a64.h target/arm: Extend vec_reg_offset to larger sizes 2018-06-15 15:23:34 +01:00
translate-sve.c target/arm: Rely on optimization within tcg_gen_gvec_or 2019-02-15 09:56:39 +00:00
translate.c target/arm: Use vector operations for saturation 2019-02-15 09:56:41 +00:00
translate.h target/arm: Use vector operations for saturation 2019-02-15 09:56:41 +00:00
vec_helper.c target/arm: Add missing clear_tail calls 2019-02-15 09:56:41 +00:00