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| author | Paolo Bonzini <pbonzini@redhat.com> | 2014-03-04 15:58:00 +0100 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2014-03-04 15:58:00 +0100 |
| commit | 1c2af4968ea533e875d7cf8d095c084f18164f5d (patch) | |
| tree | f8bb9989ff0a770a1324ed3a44acace3c35de63d /arch/s390/mm | |
| parent | a2fa301fddfcb614568a74317fe9b935dd980045 (diff) | |
| parent | 56041bf920d2937b7cadcb30cb206f0372eee814 (diff) | |
Merge tag 'kvm-for-3.15-1' of git://git.kernel.org/pub/scm/linux/kernel/git/maz/arm-platforms into kvm-next
Diffstat (limited to 'arch/s390/mm')
| -rw-r--r-- | arch/s390/mm/page-states.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/arch/s390/mm/page-states.c b/arch/s390/mm/page-states.c index a90d45e9dfb0..27c50f4d90cb 100644 --- a/arch/s390/mm/page-states.c +++ b/arch/s390/mm/page-states.c @@ -12,6 +12,8 @@ #include <linux/mm.h> #include <linux/gfp.h> #include <linux/init.h> +#include <asm/setup.h> +#include <asm/ipl.h> #define ESSA_SET_STABLE 1 #define ESSA_SET_UNUSED 2 @@ -41,6 +43,14 @@ void __init cmma_init(void) if (!cmma_flag) return; + /* + * Disable CMM for dump, otherwise the tprot based memory + * detection can fail because of unstable pages. + */ + if (OLDMEM_BASE || ipl_info.type == IPL_TYPE_FCP_DUMP) { + cmma_flag = 0; + return; + } asm volatile( " .insn rrf,0xb9ab0000,%1,%1,0,0\n" "0: la %0,0\n" |