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[kvm-unit-tests PATCH v3 01/12] arm64: Provide read/write_sysreg_s
From: |
Eric Auger |
Subject: |
[kvm-unit-tests PATCH v3 01/12] arm64: Provide read/write_sysreg_s |
Date: |
Thu, 12 Mar 2020 16:42:50 +0100 |
From: Andrew Jones <address@hidden>
Sometimes we need to test access to system registers which are
missing assembler mnemonics.
Signed-off-by: Andrew Jones <address@hidden>
Reviewed-by: Alexandru Elisei <address@hidden>
---
lib/arm64/asm/sysreg.h | 11 +++++++++++
1 file changed, 11 insertions(+)
diff --git a/lib/arm64/asm/sysreg.h b/lib/arm64/asm/sysreg.h
index a03830b..a45eebd 100644
--- a/lib/arm64/asm/sysreg.h
+++ b/lib/arm64/asm/sysreg.h
@@ -38,6 +38,17 @@
asm volatile("msr " xstr(r) ", %x0" : : "rZ" (__val)); \
} while (0)
+#define read_sysreg_s(r) ({ \
+ u64 __val; \
+ asm volatile("mrs_s %0, " xstr(r) : "=r" (__val)); \
+ __val; \
+})
+
+#define write_sysreg_s(v, r) do { \
+ u64 __val = (u64)v; \
+ asm volatile("msr_s " xstr(r) ", %x0" : : "rZ" (__val));\
+} while (0)
+
asm(
" .irp
num,0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30\n"
" .equ .L__reg_num_x\\num, \\num\n"
--
2.20.1
- [kvm-unit-tests PATCH v3 00/12] KVM: arm64: PMUv3 Event Counter Tests, Eric Auger, 2020/03/12
- [kvm-unit-tests PATCH v3 01/12] arm64: Provide read/write_sysreg_s,
Eric Auger <=
- [kvm-unit-tests PATCH v3 02/12] arm: pmu: Let pmu tests take a sub-test parameter, Eric Auger, 2020/03/12
- [kvm-unit-tests PATCH v3 03/12] arm: pmu: Don't check PMCR.IMP anymore, Eric Auger, 2020/03/12
- [kvm-unit-tests PATCH v3 04/12] arm: pmu: Add a pmu struct, Eric Auger, 2020/03/12
- [kvm-unit-tests PATCH v3 05/12] arm: pmu: Introduce defines for PMU versions, Eric Auger, 2020/03/12
- [kvm-unit-tests PATCH v3 06/12] arm: pmu: Check Required Event Support, Eric Auger, 2020/03/12
- [kvm-unit-tests PATCH v3 08/12] arm: pmu: Test SW_INCR event count, Eric Auger, 2020/03/12
- [kvm-unit-tests PATCH v3 07/12] arm: pmu: Basic event counter Tests, Eric Auger, 2020/03/12
- [kvm-unit-tests PATCH v3 09/12] arm: pmu: Test chained counters, Eric Auger, 2020/03/12
- [kvm-unit-tests PATCH v3 10/12] arm: pmu: test 32-bit <-> 64-bit transitions, Eric Auger, 2020/03/12
- [kvm-unit-tests PATCH v3 11/12] arm: gic: Introduce gic_irq_set_clr_enable() helper, Eric Auger, 2020/03/12