From: Andrew Jones <drjones@redhat.com>
To: pbonzini@redhat.com
Cc: Andre Przywara <andre.przywara@arm.com>,
kvmarm@lists.cs.columbia.edu, kvm@vger.kernel.org
Subject: [PULL kvm-unit-tests 05/39] arm64: timer: Make irq_received volatile
Date: Sat, 4 Apr 2020 16:36:57 +0200 [thread overview]
Message-ID: <20200404143731.208138-6-drjones@redhat.com> (raw)
In-Reply-To: <20200404143731.208138-1-drjones@redhat.com>
From: Alexandru Elisei <alexandru.elisei@arm.com>
The irq_received field is modified by the interrupt handler. Make it
volatile so that the compiler doesn't reorder accesses with regard to
the instruction that will be causing the interrupt.
Suggested-by: Andre Przywara <andre.przywara@arm.com>
Signed-off-by: Alexandru Elisei <alexandru.elisei@arm.com>
Signed-off-by: Andrew Jones <drjones@redhat.com>
---
arm/timer.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arm/timer.c b/arm/timer.c
index e758e84855c3..82f891147b35 100644
--- a/arm/timer.c
+++ b/arm/timer.c
@@ -109,7 +109,7 @@ static void write_ptimer_ctl(u64 val)
struct timer_info {
u32 irq;
u32 irq_flags;
- bool irq_received;
+ volatile bool irq_received;
u64 (*read_counter)(void);
u64 (*read_cval)(void);
void (*write_cval)(u64);
--
2.25.1
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next prev parent reply other threads:[~2020-04-04 14:38 UTC|newest]
Thread overview: 41+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-04-04 14:36 [PULL kvm-unit-tests 00/39] arm/arm64: The old and new Andrew Jones
2020-04-04 14:36 ` [PULL kvm-unit-tests 01/39] Makefile: Use no-stack-protector compiler options Andrew Jones
2020-04-04 14:36 ` [PULL kvm-unit-tests 02/39] arm/arm64: psci: Don't run C code without stack or vectors Andrew Jones
2020-04-04 14:36 ` [PULL kvm-unit-tests 03/39] arm64: timer: Add ISB after register writes Andrew Jones
2020-04-04 14:36 ` [PULL kvm-unit-tests 04/39] arm64: timer: Add ISB before reading the counter value Andrew Jones
2020-04-04 14:36 ` Andrew Jones [this message]
2020-04-04 14:36 ` [PULL kvm-unit-tests 06/39] arm64: timer: EOIR the interrupt after masking the timer Andrew Jones
2020-04-04 14:36 ` [PULL kvm-unit-tests 07/39] arm64: timer: Wait for the GIC to sample timer interrupt state Andrew Jones
2020-04-04 14:37 ` [PULL kvm-unit-tests 08/39] arm64: timer: Check the " Andrew Jones
2020-04-04 14:37 ` [PULL kvm-unit-tests 09/39] arm64: timer: Test behavior when timer disabled or masked Andrew Jones
2020-04-04 14:37 ` [PULL kvm-unit-tests 10/39] arm/arm64: Perform dcache clean + invalidate after turning MMU off Andrew Jones
2020-04-04 14:37 ` [PULL kvm-unit-tests 11/39] arm/arm64: gic: Move gic_state enumeration to asm/gic.h Andrew Jones
2020-04-04 14:37 ` [PULL kvm-unit-tests 12/39] arm64: timer: Use the proper RDist register name in GICv3 Andrew Jones
2020-04-04 14:37 ` [PULL kvm-unit-tests 13/39] arm64: timer: Use existing helpers to access counter/timers Andrew Jones
2020-04-04 14:37 ` [PULL kvm-unit-tests 14/39] arm64: timer: Speed up gic-timer-state check Andrew Jones
2020-04-04 14:37 ` [PULL kvm-unit-tests 15/39] arm64: Provide read/write_sysreg_s Andrew Jones
2020-04-04 14:37 ` [PULL kvm-unit-tests 16/39] arm: pmu: Let pmu tests take a sub-test parameter Andrew Jones
2020-04-04 14:37 ` [PULL kvm-unit-tests 17/39] arm: pmu: Don't check PMCR.IMP anymore Andrew Jones
2020-04-04 14:37 ` [PULL kvm-unit-tests 18/39] arm: pmu: Add a pmu struct Andrew Jones
2020-04-04 14:37 ` [PULL kvm-unit-tests 19/39] arm: pmu: Introduce defines for PMU versions Andrew Jones
2020-04-04 14:37 ` [PULL kvm-unit-tests 20/39] arm: pmu: Check Required Event Support Andrew Jones
2020-04-04 14:37 ` [PULL kvm-unit-tests 21/39] arm: pmu: Basic event counter Tests Andrew Jones
2020-04-04 14:37 ` [PULL kvm-unit-tests 22/39] arm: pmu: Test SW_INCR event count Andrew Jones
2020-04-04 14:37 ` [PULL kvm-unit-tests 23/39] arm: pmu: Test chained counters Andrew Jones
2020-04-04 14:37 ` [PULL kvm-unit-tests 24/39] arm: pmu: test 32-bit <-> 64-bit transitions Andrew Jones
2020-04-04 14:37 ` [PULL kvm-unit-tests 25/39] arm: gic: Introduce gic_irq_set_clr_enable() helper Andrew Jones
2020-04-04 14:37 ` [PULL kvm-unit-tests 26/39] arm: pmu: Test overflow interrupts Andrew Jones
2020-04-04 14:37 ` [PULL kvm-unit-tests 27/39] libcflat: Add other size defines Andrew Jones
2020-04-04 14:37 ` [PULL kvm-unit-tests 28/39] page_alloc: Introduce get_order() Andrew Jones
2020-04-04 14:37 ` [PULL kvm-unit-tests 29/39] arm/arm64: gic: Introduce setup_irq() helper Andrew Jones
2020-04-04 14:37 ` [PULL kvm-unit-tests 30/39] arm/arm64: gicv3: Add some re-distributor defines Andrew Jones
2020-04-04 14:37 ` [PULL kvm-unit-tests 31/39] arm/arm64: gicv3: Set the LPI config and pending tables Andrew Jones
2020-04-04 14:37 ` [PULL kvm-unit-tests 32/39] arm/arm64: ITS: Introspection tests Andrew Jones
2020-04-04 14:37 ` [PULL kvm-unit-tests 33/39] arm/arm64: ITS: its_enable_defaults Andrew Jones
2020-04-04 14:37 ` [PULL kvm-unit-tests 34/39] arm/arm64: ITS: Device and collection Initialization Andrew Jones
2020-04-04 14:37 ` [PULL kvm-unit-tests 35/39] arm/arm64: ITS: Commands Andrew Jones
2020-04-04 14:37 ` [PULL kvm-unit-tests 36/39] arm/arm64: ITS: INT functional tests Andrew Jones
2020-04-04 14:37 ` [PULL kvm-unit-tests 37/39] arm/run: Allow Migration tests Andrew Jones
2020-04-04 14:37 ` [PULL kvm-unit-tests 38/39] arm/arm64: ITS: migration tests Andrew Jones
2020-04-04 14:37 ` [PULL kvm-unit-tests 39/39] arm/arm64: ITS: pending table migration test Andrew Jones
2020-04-07 15:28 ` [PULL kvm-unit-tests 00/39] arm/arm64: The old and new Paolo Bonzini
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