linux-kernel - [PATCH v2] arm64/kexec: Fix missing extra range for crashkres

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Date:   Tue, 30 Aug 2022 18:28:39 +0900
From:   Levi Yun <ppbuk5246@...il.com>
To:     bhe@...hat.com, will@...nel.org, nramas@...ux.microsoft.com,
        thunder.leizhen@...wei.com
Cc:     linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        kexec@...ts.infradead.org, Levi Yun <ppbuk5246@...il.com>
Subject: [PATCH v2] 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 range slot in case of crashk_low_res is used.

Signed-off-by: Levi Yun <ppbuk5246@...il.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