[Devel] [PATCH] kexec, kasan: increase KEXEC_AUTO_RESERVED_SIZE under CONFIG_KASAN=y

[Andrey Ryabinin]

CONFIG_KASAN=y significantly increases kernel's memory usage.
160Mb for crash kernel is not enough. Increase it up to
196Mb.

https://jira.sw.ru/browse/PSBM-39339

Signed-off-by: Andrey Ryabinin <aryabinin at odin.com>
---
 include/asm-generic/kexec.h | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/include/asm-generic/kexec.h b/include/asm-generic/kexec.h
index 76726f0..ab22eaf 100644
--- a/include/asm-generic/kexec.h
+++ b/include/asm-generic/kexec.h
@@ -4,7 +4,11 @@
 #ifdef CONFIG_KEXEC_AUTO_RESERVE
 
 #ifndef KEXEC_AUTO_RESERVED_SIZE
+#ifndef CONFIG_KASAN
 #define KEXEC_AUTO_RESERVED_SIZE ((1ULL<<27) + (1ULL<<25)) /* 160M */
+#else
+#define KEXEC_AUTO_RESERVED_SIZE ((1ULL<<27) + (1ULL<<26)) /* 196M */
+#endif
 #endif
 #ifndef KEXEC_AUTO_THRESHOLD
 #define KEXEC_AUTO_THRESHOLD (1ULL<<31) /* 2G */
-- 
2.4.6