提交 815b6a54 编写于 作者: J Julien Thierry 提交者: Xie XiuQi

arm64: gic-v3: Implement arch support for priority masking

hulk inclusion
category: feature
bugzilla: 9291
CVE: NA

ported from https://lore.kernel.org/patchwork/patch/1037484/

--------------------------------

Implement architecture specific primitive allowing the GICv3 driver to
use priorities to mask interrupts.
Signed-off-by: NJulien Thierry <julien.thierry@arm.com>
Suggested-by: NDaniel Thompson <daniel.thompson@linaro.org>
Acked-by: NMarc Zyngier <marc.zyngier@arm.com>
Cc: Marc Zyngier <marc.zyngier@arm.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
Signed-off-by: NWei Li <liwei391@huawei.com>
Reviewed-by: NHanjun Guo <guohanjun@huawei.com>
Signed-off-by: NYang Yingliang <yangyingliang@huawei.com>
上级 48a87f04
无相关合并请求
......@@ -22,6 +22,7 @@
#ifndef __ASSEMBLY__
#include <linux/irqchip/arm-gic-common.h>
#include <linux/stringify.h>
#include <asm/barrier.h>
#include <asm/cacheflush.h>
......@@ -162,14 +163,13 @@ static inline bool gic_prio_masking_enabled(void)
static inline void gic_pmr_mask_irqs(void)
{
/* Should not get called yet. */
WARN_ON_ONCE(true);
BUILD_BUG_ON(GICD_INT_DEF_PRI <= GIC_PRIO_IRQOFF);
gic_write_pmr(GIC_PRIO_IRQOFF);
}
static inline void gic_arch_enable_irqs(void)
{
/* Should not get called yet. */
WARN_ON_ONCE(true);
asm volatile ("msr daifclr, #2" : : : "memory");
}
#endif /* __ASSEMBLY__ */
......
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