From: Julien Thierry <julien.thierry@arm.com>
To: linux-arm-kernel@lists.infradead.org
Cc: linux-kernel@vger.kernel.org, daniel.thompson@linaro.org,
joel@joelfernandes.org, marc.zyngier@arm.com,
christoffer.dall@arm.com, james.morse@arm.com,
catalin.marinas@arm.com, will.deacon@arm.com,
Julien Thierry <julien.thierry@arm.com>
Subject: [PATCH v6 11/24] arm64: daifflags: Include PMR in daifflags restore operations
Date: Mon, 12 Nov 2018 11:57:02 +0000 [thread overview]
Message-ID: <1542023835-21446-12-git-send-email-julien.thierry@arm.com> (raw)
In-Reply-To: <1542023835-21446-1-git-send-email-julien.thierry@arm.com>
The addition of PMR should not bypass the semantics of daifflags.
When DA_F are set, I bit is also set as no interrupts (even of higher
priority) is allowed.
When DA_F are cleared, I bit is cleared and interrupt enabling/disabling
goes through ICC_PMR_EL1.
Signed-off-by: Julien Thierry <julien.thierry@arm.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
Cc: James Morse <james.morse@arm.com>
---
arch/arm64/include/asm/daifflags.h | 10 ++++++++--
1 file changed, 8 insertions(+), 2 deletions(-)
diff --git a/arch/arm64/include/asm/daifflags.h b/arch/arm64/include/asm/daifflags.h
index 546bc39..31936b3 100644
--- a/arch/arm64/include/asm/daifflags.h
+++ b/arch/arm64/include/asm/daifflags.h
@@ -18,8 +18,14 @@
#include <linux/irqflags.h>
-#define DAIF_PROCCTX 0
-#define DAIF_PROCCTX_NOIRQ PSR_I_BIT
+#include <asm/cpufeature.h>
+
+#define DAIF_PROCCTX MAKE_ARCH_FLAGS(0, GIC_PRIO_IRQON)
+
+#define DAIF_PROCCTX_NOIRQ \
+ (system_supports_irq_prio_masking() ? \
+ MAKE_ARCH_FLAGS(0, GIC_PRIO_IRQOFF) : \
+ MAKE_ARCH_FLAGS(PSR_I_BIT, GIC_PRIO_IRQON))
/* mask/save/unmask/restore all exceptions, including interrupts. */
static inline void local_daif_mask(void)
--
1.9.1
next prev parent reply other threads:[~2018-11-12 11:57 UTC|newest]
Thread overview: 62+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-11-12 11:56 [PATCH v6 00/24] arm64: provide pseudo NMI with GICv3 Julien Thierry
2018-11-12 11:56 ` [PATCH v6 01/24] arm64: Remove unused daif related functions/macros Julien Thierry
2018-11-29 16:26 ` Mark Rutland
2018-11-30 18:03 ` Catalin Marinas
2018-11-12 11:56 ` [PATCH v6 02/24] arm64: cpufeature: Set SYSREG_GIC_CPUIF as a boot system feature Julien Thierry
2018-11-12 18:00 ` Suzuki K Poulose
2018-11-29 16:27 ` Mark Rutland
2018-11-30 18:07 ` Catalin Marinas
2018-11-12 11:56 ` [PATCH v6 03/24] arm64: cpufeature: Add cpufeature for IRQ priority masking Julien Thierry
2018-11-12 18:02 ` Suzuki K Poulose
2018-11-29 17:12 ` Mark Rutland
2018-12-03 10:33 ` Julien Thierry
2018-11-30 18:07 ` Catalin Marinas
2018-11-12 11:56 ` [PATCH v6 04/24] arm/arm64: gic-v3: Add PMR and RPR accessors Julien Thierry
2018-11-29 16:32 ` Mark Rutland
2018-11-30 18:07 ` Catalin Marinas
2018-11-12 11:56 ` [PATCH v6 05/24] irqchip/gic-v3: Switch to PMR masking before calling IRQ handler Julien Thierry
2018-11-29 18:12 ` Mark Rutland
2018-11-30 9:18 ` Julien Thierry
2018-12-04 16:21 ` Catalin Marinas
2018-11-12 11:56 ` [PATCH v6 06/24] arm64: ptrace: Provide definitions for PMR values Julien Thierry
2018-11-29 16:40 ` Mark Rutland
2018-11-30 8:53 ` Julien Thierry
2018-11-30 10:38 ` Daniel Thompson
2018-11-30 11:03 ` Julien Thierry
2018-11-12 11:56 ` [PATCH v6 07/24] arm64: Make PMR part of task context Julien Thierry
2018-11-29 16:46 ` Mark Rutland
2018-11-30 9:25 ` Julien Thierry
2018-12-04 17:09 ` Catalin Marinas
2018-12-04 17:30 ` Julien Thierry
2018-11-12 11:56 ` [PATCH v6 08/24] arm64: Unmask PMR before going idle Julien Thierry
2018-11-29 17:44 ` Mark Rutland
2018-11-30 10:55 ` Julien Thierry
2018-11-30 13:37 ` Mark Rutland
2018-12-03 10:38 ` Julien Thierry
2018-11-12 11:57 ` [PATCH v6 09/24] arm64: kvm: Unmask PMR before entering guest Julien Thierry
2018-11-12 11:57 ` [PATCH v6 10/24] arm64: irqflags: Use ICC_PMR_EL1 for interrupt masking Julien Thierry
2018-12-04 17:36 ` Catalin Marinas
2018-12-05 16:55 ` Julien Thierry
2018-12-05 18:26 ` Catalin Marinas
2018-12-06 9:50 ` Julien Thierry
2018-12-10 14:39 ` Catalin Marinas
2018-11-12 11:57 ` Julien Thierry [this message]
2018-11-12 11:57 ` [PATCH v6 12/24] arm64: alternative: Allow alternative status checking per cpufeature Julien Thierry
2018-11-12 11:57 ` [PATCH v6 13/24] arm64: alternative: Apply alternatives early in boot process Julien Thierry
2018-11-12 11:57 ` [PATCH v6 14/24] irqchip/gic-v3: Factor group0 detection into functions Julien Thierry
2018-11-12 11:57 ` [PATCH v6 15/24] arm64: Switch to PMR masking when starting CPUs Julien Thierry
2018-12-04 17:51 ` Catalin Marinas
2018-12-04 18:11 ` Julien Thierry
2018-11-12 11:57 ` [PATCH v6 16/24] arm64: gic-v3: Implement arch support for priority masking Julien Thierry
2018-11-12 11:57 ` [PATCH v6 17/24] irqchip/gic-v3: Detect if GIC can support pseudo-NMIs Julien Thierry
2018-11-12 11:57 ` [PATCH v6 18/24] irqchip/gic-v3: Handle pseudo-NMIs Julien Thierry
2018-11-12 11:57 ` [PATCH v6 19/24] irqchip/gic: Add functions to access irq priorities Julien Thierry
2018-11-12 11:57 ` [PATCH v6 20/24] irqchip/gic-v3: Allow interrupts to be set as pseudo-NMI Julien Thierry
2018-11-12 11:57 ` [PATCH v6 21/24] arm64: Handle serror in NMI context Julien Thierry
2018-12-04 18:09 ` Catalin Marinas
2018-12-05 13:02 ` James Morse
2018-11-12 11:57 ` [PATCH v6 22/24] arm64: Skip preemption when exiting an NMI Julien Thierry
2018-11-12 11:57 ` [PATCH v6 23/24] arm64: Skip irqflags tracing for NMI in IRQs disabled context Julien Thierry
2018-11-12 11:57 ` [PATCH v6 24/24] arm64: Enable the support of pseudo-NMIs Julien Thierry
2018-11-12 12:00 ` [PATCH v6 00/24] arm64: provide pseudo NMI with GICv3 Julien Thierry
2018-11-13 14:43 ` Julien Thierry
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