From: Eric Auger <eric.auger@redhat.com>
To: eric.auger.pro@gmail.com, eric.auger@redhat.com, maz@kernel.org,
kvmarm@lists.cs.columbia.edu, kvm@vger.kernel.org,
qemu-devel@nongnu.org, qemu-arm@nongnu.org
Cc: andrew.murray@arm.com, andre.przywara@arm.com
Subject: [kvm-unit-tests PATCH v2 1/9] arm64: Provide read/write_sysreg_s
Date: Thu, 30 Jan 2020 12:25:02 +0100
Message-ID: <20200130112510.15154-2-eric.auger@redhat.com> (raw)
In-Reply-To: <20200130112510.15154-1-eric.auger@redhat.com>
From: Andrew Jones <drjones@redhat.com>
Sometimes we need to test access to system registers which are
missing assembler mnemonics.
Signed-off-by: Andrew Jones <drjones@redhat.com>
Reviewed-by: Alexandru Elisei <alexandru.elisei@arm.com>
---
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
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Thread overview: 38+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-01-30 11:25 [kvm-unit-tests PATCH v2 0/9] KVM: arm64: PMUv3 Event Counter Tests Eric Auger
2020-01-30 11:25 ` Eric Auger [this message]
2020-01-30 11:25 ` [kvm-unit-tests PATCH v2 2/9] arm: pmu: Let pmu tests take a sub-test parameter Eric Auger
2020-03-04 18:01 ` Andre Przywara
2020-03-05 8:44 ` Andrew Jones
2020-01-30 11:25 ` [kvm-unit-tests PATCH v2 3/9] arm: pmu: Add a pmu struct Eric Auger
2020-03-04 18:02 ` Andre Przywara
2020-03-04 18:21 ` Auger Eric
2020-03-05 8:53 ` Andrew Jones
2020-01-30 11:25 ` [kvm-unit-tests PATCH v2 4/9] arm: pmu: Check Required Event Support Eric Auger
2020-02-11 15:33 ` Peter Maydell
2020-02-11 18:08 ` Auger Eric
2020-02-11 16:28 ` Peter Maydell
2020-02-11 18:32 ` Auger Eric
2020-03-04 18:02 ` Andre Przywara
2020-03-05 9:04 ` Andrew Jones
2020-01-30 11:25 ` [kvm-unit-tests PATCH v2 5/9] arm: pmu: Basic event counter Tests Eric Auger
2020-02-11 16:27 ` Peter Maydell
2020-02-11 18:31 ` Auger Eric
2020-03-04 18:03 ` Andre Przywara
2020-03-05 9:33 ` Andrew Jones
2020-03-12 11:19 ` Auger Eric
2020-03-05 9:42 ` Andrew Jones
2020-03-12 11:16 ` Auger Eric
2020-01-30 11:25 ` [kvm-unit-tests PATCH v2 6/9] arm: pmu: Test chained counter Eric Auger
2020-02-11 16:24 ` Peter Maydell
2020-02-11 18:30 ` Auger Eric
2020-03-05 9:37 ` Andrew Jones
2020-01-30 11:25 ` [kvm-unit-tests PATCH v2 7/9] arm: pmu: test 32-bit <-> 64-bit transitions Eric Auger
2020-03-05 9:50 ` Andrew Jones
2020-01-30 11:25 ` [kvm-unit-tests PATCH v2 8/9] arm: gic: Provide per-IRQ helper functions Eric Auger
2020-03-05 9:55 ` Andrew Jones
2020-03-05 11:10 ` Alexandru Elisei
2020-01-30 11:25 ` [kvm-unit-tests PATCH v2 9/9] arm: pmu: Test overflow interrupts Eric Auger
2020-03-05 10:17 ` Andrew Jones
2020-02-11 15:42 ` [kvm-unit-tests PATCH v2 0/9] KVM: arm64: PMUv3 Event Counter Tests Peter Maydell
2020-02-11 16:07 ` Andrew Jones
2020-02-11 18:23 ` Auger Eric
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