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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>,
	Oleg Nesterov <oleg@redhat.com>
Subject: [PATCH v6 06/24] arm64: ptrace: Provide definitions for PMR values
Date: Mon, 12 Nov 2018 11:56:57 +0000	[thread overview]
Message-ID: <1542023835-21446-7-git-send-email-julien.thierry@arm.com> (raw)
In-Reply-To: <1542023835-21446-1-git-send-email-julien.thierry@arm.com>

Introduce fixed values for PMR that are going to be used to mask and
unmask interrupts by priority. These values are chosent in such a way
that a single bit (GIC_PMR_UNMASKED_BIT) encodes the information whether
interrupts are masked or not.

Signed-off-by: Julien Thierry <julien.thierry@arm.com>
Suggested-by: Daniel Thompson <daniel.thompson@linaro.org>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
---
 arch/arm64/include/asm/ptrace.h | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/arch/arm64/include/asm/ptrace.h b/arch/arm64/include/asm/ptrace.h
index fce22c4..ce6998c 100644
--- a/arch/arm64/include/asm/ptrace.h
+++ b/arch/arm64/include/asm/ptrace.h
@@ -25,6 +25,12 @@
 #define CurrentEL_EL1		(1 << 2)
 #define CurrentEL_EL2		(2 << 2)
 
+/* PMR values used to mask/unmask interrupts */
+#define GIC_PRIO_IRQON		0xf0
+#define GIC_PRIO_STATUS_SHIFT	6
+#define GIC_PRIO_STATUS_BIT	(1 << GIC_PRIO_STATUS_SHIFT)
+#define GIC_PRIO_IRQOFF		(GIC_PRIO_IRQON ^ GIC_PRIO_STATUS_BIT)
+
 /* Additional SPSR bits not exposed in the UABI */
 #define PSR_IL_BIT		(1 << 20)
 
-- 
1.9.1


  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 ` Julien Thierry [this message]
2018-11-29 16:40   ` [PATCH v6 06/24] arm64: ptrace: Provide definitions for PMR values 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 ` [PATCH v6 11/24] arm64: daifflags: Include PMR in daifflags restore operations Julien Thierry
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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