linux-kernel - [PATCH v4 0/2] Improve interrupt handling during machine kexec

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Message-ID: <20241129113119.26669-1-farbere@amazon.com>
Date: Fri, 29 Nov 2024 11:31:17 +0000
From: Eliav Farber <farbere@...zon.com>
To: <linux@...linux.org.uk>, <catalin.marinas@....com>, <will@...nel.org>,
	<mpe@...erman.id.au>, <npiggin@...il.com>, <christophe.leroy@...roup.eu>,
	<naveen@...nel.org>, <maddy@...ux.ibm.com>, <paul.walmsley@...ive.com>,
	<palmer@...belt.com>, <aou@...s.berkeley.edu>, <tglx@...utronix.de>,
	<ebiederm@...ssion.com>, <akpm@...ux-foundation.org>, <bhe@...hat.com>,
	<farbere@...zon.com>, <hbathini@...ux.ibm.com>, <sourabhjain@...ux.ibm.com>,
	<adityag@...ux.ibm.com>, <songshuaishuai@...ylab.org>,
	<takakura@...inux.co.jp>, <linux-arm-kernel@...ts.infradead.org>,
	<linux-kernel@...r.kernel.org>, <linuxppc-dev@...ts.ozlabs.org>,
	<linux-riscv@...ts.infradead.org>, <kexec@...ts.infradead.org>
CC: <jonnyc@...zon.com>
Subject: [PATCH v4 0/2] Improve interrupt handling during machine kexec

This patch series focuses on improving the machine_kexec_mask_interrupts()
function by consolidating its implementation and optimizing its behavior to
avoid redundant interrupt masking.

Patch Summary:
[PATCH v4 1/2] Move machine_kexec_mask_interrupts() to kexec_core.c,
               removing duplicate architecture-specific implementations.
[PATCH v4 2/2] Refine machine_kexec_mask_interrupts() to avoid re-masking
               already-masked interrupts, resolving specific warnings
               triggered in GPIO IRQ flows.

Changes between v3 and v4:
 - Add missing <linux/irqdesc.h> and <linux/irq.h> includes.

Eliav Farber (2):
  kexec: Consolidate machine_kexec_mask_interrupts() implementation
  kexec: Prevent redundant IRQ masking by checking state before shutdown

 arch/arm/kernel/machine_kexec.c   | 23 -----------------------
 arch/arm64/kernel/machine_kexec.c | 31 -------------------------------
 arch/powerpc/include/asm/kexec.h  |  1 -
 arch/powerpc/kexec/core.c         | 22 ----------------------
 arch/riscv/kernel/machine_kexec.c | 23 -----------------------
 include/linux/irq.h               |  3 +++
 include/linux/kexec.h             |  2 ++
 kernel/irq/internals.h            |  1 -
 kernel/kexec_core.c               | 30 ++++++++++++++++++++++++++++++
 9 files changed, 35 insertions(+), 101 deletions(-)

-- 
2.40.1