From mboxrd@z Thu Jan 1 00:00:00 1970 From: julien.thierry@arm.com (Julien Thierry) Date: Mon, 12 Nov 2018 11:56:57 +0000 Subject: [PATCH v6 06/24] arm64: ptrace: Provide definitions for PMR values In-Reply-To: <1542023835-21446-1-git-send-email-julien.thierry@arm.com> References: <1542023835-21446-1-git-send-email-julien.thierry@arm.com> Message-ID: <1542023835-21446-7-git-send-email-julien.thierry@arm.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org 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 Suggested-by: Daniel Thompson Cc: Oleg Nesterov Cc: Catalin Marinas Cc: Will Deacon --- 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