mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git
synced 2025-01-15 11:57:46 +00:00
bad6722e47
Consolidate the machine_kexec_mask_interrupts implementation into a common function located in a new file: kernel/irq/kexec.c. This removes duplicate implementations from architecture-specific files in arch/arm, arch/arm64, arch/powerpc, and arch/riscv, reducing code duplication and improving maintainability. The new implementation retains architecture-specific behavior for CONFIG_GENERIC_IRQ_KEXEC_CLEAR_VM_FORWARD, which was previously implemented for ARM64. When enabled (currently for ARM64), it clears the active state of interrupts forwarded to virtual machines (VMs) before handling other interrupt masking operations. Signed-off-by: Eliav Farber <farbere@amazon.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Link: https://lore.kernel.org/all/20241204142003.32859-2-farbere@amazon.com
41 lines
973 B
C
41 lines
973 B
C
// SPDX-License-Identifier: GPL-2.0
|
|
|
|
#include <linux/interrupt.h>
|
|
#include <linux/irq.h>
|
|
#include <linux/irqdesc.h>
|
|
#include <linux/irqnr.h>
|
|
|
|
#include "internals.h"
|
|
|
|
void machine_kexec_mask_interrupts(void)
|
|
{
|
|
struct irq_desc *desc;
|
|
unsigned int i;
|
|
|
|
for_each_irq_desc(i, desc) {
|
|
struct irq_chip *chip;
|
|
int check_eoi = 1;
|
|
|
|
chip = irq_desc_get_chip(desc);
|
|
if (!chip)
|
|
continue;
|
|
|
|
if (IS_ENABLED(CONFIG_GENERIC_IRQ_KEXEC_CLEAR_VM_FORWARD)) {
|
|
/*
|
|
* First try to remove the active state from an interrupt which is forwarded
|
|
* to a VM. If the interrupt is not forwarded, try to EOI the interrupt.
|
|
*/
|
|
check_eoi = irq_set_irqchip_state(i, IRQCHIP_STATE_ACTIVE, false);
|
|
}
|
|
|
|
if (check_eoi && chip->irq_eoi && irqd_irq_inprogress(&desc->irq_data))
|
|
chip->irq_eoi(&desc->irq_data);
|
|
|
|
if (chip->irq_mask)
|
|
chip->irq_mask(&desc->irq_data);
|
|
|
|
if (chip->irq_disable && !irqd_irq_disabled(&desc->irq_data))
|
|
chip->irq_disable(&desc->irq_data);
|
|
}
|
|
}
|