linux-kernel - [PATCH v2 5/8] crash_core.h: include <asm/crash

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Message-ID: <20230829121610.138107-6-bhe@redhat.com>
Date:   Tue, 29 Aug 2023 20:16:07 +0800
From:   Baoquan He <bhe@...hat.com>
To:     linux-kernel@...r.kernel.org
Cc:     akpm@...ux-foundation.org, catalin.marinas@....com,
        thunder.leizhen@...wei.com, dyoung@...hat.com, prudo@...hat.com,
        samuel.holland@...ive.com, kexec@...ts.infradead.org,
        linux-arm-kernel@...ts.infradead.org, x86@...nel.org,
        Baoquan He <bhe@...hat.com>
Subject: [PATCH v2 5/8] crash_core.h: include <asm/crash_core.h> if generic reservation is needed

In asm/crash_core.h, ARCH can provide its own macro definitions to
override DEFAULT_CRASH_KERNEL_LOW_SIZE, CRASH_ALIGN, CRASH_ADDR_LOW_MAX,
CRASH_ADDR_HIGH_MAX in <linux/crash_core.h> if needed.

Later, x86 and arm64 wil support the generic reservaton, so wrap the
including into CONFIG_ARCH_HAS_GENERIC_CRASHKERNEL_RESERVATION ifdeffery
scope to avoid compiling error in other ARCH-es which doesn't take the
generic reservation.

Signed-off-by: Baoquan He <bhe@...hat.com>
---
 include/linux/crash_core.h | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/include/linux/crash_core.h b/include/linux/crash_core.h
index 2f732493e922..86e22e6a039f 100644
--- a/include/linux/crash_core.h
+++ b/include/linux/crash_core.h
@@ -5,6 +5,9 @@
 #include <linux/linkage.h>
 #include <linux/elfcore.h>
 #include <linux/elf.h>
+#ifdef CONFIG_ARCH_HAS_GENERIC_CRASHKERNEL_RESERVATION
+#include <asm/crash_core.h>
+#endif
 
 #define CRASH_CORE_NOTE_NAME	   "CORE"
 #define CRASH_CORE_NOTE_HEAD_BYTES ALIGN(sizeof(struct elf_note), 4)
-- 
2.41.0