linux-kernel - [PATCH v3] arm64/kexec: Fix missing extra range for crashkres

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Message-Id: <20220831103913.12661-1-ppbuk5246@gmail.com>
Date:   Wed, 31 Aug 2022 19:39:13 +0900
From:   Levi Yun <ppbuk5246@...il.com>
To:     catalin.marinas@....com, bhe@...hat.com
Cc:     will@...nel.org, nramas@...ux.microsoft.com,
        thunder.leizhen@...wei.com, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org, kexec@...ts.infradead.org,
        Levi Yun <ppbuk5246@...il.com>, stable@...r.kernel.org
Subject: [PATCH v3] arm64/kexec: Fix missing extra range for crashkres_low.

Like crashk_res, Calling crash_exclude_mem_range function with
crashk_low_res area would need extra crash_mem range too.

Add one more extra cmem slot in case of crashk_low_res is used.

Signed-off-by: Levi Yun <ppbuk5246@...il.com>
Fixes: 944a45abfabc ("arm64: kdump: Reimplement crashkernel=X")
Cc: <stable@...r.kernel.org> # 5.19.x
Acked-by: Baoquan He <bhe@...hat.com>
Reviewed-by: Catalin Marinas <catalin.marinas@....com>
---
 arch/arm64/kernel/machine_kexec_file.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/arm64/kernel/machine_kexec_file.c b/arch/arm64/kernel/machine_kexec_file.c
index 889951291cc0..a11a6e14ba89 100644
--- a/arch/arm64/kernel/machine_kexec_file.c
+++ b/arch/arm64/kernel/machine_kexec_file.c
@@ -47,7 +47,7 @@ static int prepare_elf_headers(void **addr, unsigned long *sz)
 	u64 i;
 	phys_addr_t start, end;

-	nr_ranges = 1; /* for exclusion of crashkernel region */
+	nr_ranges = 2; /* for exclusion of crashkernel region */
 	for_each_mem_range(i, &start, &end)
 		nr_ranges++;

--
2.35.1