[Crash-utility] [PATCH v2] vtop: Translate IEP flag for s390 region, segment and page entries

Translate and print the IEP (Instruction Execution Protection) flag for Region-Third-Table entries and Segment-Table entries of Format Control 1 and also for Page-Table entries. Display the flags in s390x 'vtop' command output like shown below: STE: 0000000033be8ac0 => 0000000015803503 (flags = 03503) flags in binary : AV=0; ACC=0011; F=0; FC=1; P=0; IEP=1; I=0; CS=0; TT=0 or PTE: 00000000031c6fd8 => 000000000842e13d (flags = 13d) flags in binary : I=0; P=0; IEP=1 Suggested-by: Heiko Carstens <hca(a)linux.ibm.com&gt; Signed-off-by: Mikhail Zaslonko <zaslonko(a)linux.ibm.com&gt; Reviewed-by: Heiko Carstens <hca(a)linux.ibm.com&gt; --- s390x.c | 15 +++++++++++---- 1 file changed, 11 insertions(+), 4 deletions(-) diff --git a/s390x.c b/s390x.c index 0e8e2b3..8c0bba4 100644 --- a/s390x.c +++ b/s390x.c @@ -29,6 +29,7 @@ #define S390X_PTE_FLAG_BITS 0xfffULL /* Page table entry flag bits */ #define S390X_PAGE_PRESENT 0x001ULL /* set: loaded in physical memory * clear: not loaded in physical mem */ +#define S390X_PAGE_IEP 0x100ULL /* Instruction-execution protection */ #define S390X_PAGE_RO 0x200ULL /* HW read-only */ #define S390X_PAGE_INVALID 0x400ULL /* HW invalid */ #define S390X_PAGE_INVALID_MASK 0x601ULL /* for linux 2.6 */ @@ -65,6 +66,7 @@ #define S390X_RTE_TF 0xc0ULL #define S390X_RTE_TF_10 0x80ULL #define S390X_RTE_TF_01 0x40ULL +#define S390X_RTE_IEP 0x100ULL #define S390X_RTE_P 0x200ULL #define S390X_RTE_FC 0x400ULL #define S390X_RTE_F 0x800ULL @@ -82,6 +84,7 @@ #define S390X_STE_TT_01 0x4ULL #define S390X_STE_CS 0x10ULL #define S390X_STE_I 0x20ULL +#define S390X_STE_IEP 0x100ULL #define S390X_STE_P 0x200ULL #define S390X_STE_FC 0x400ULL #define S390X_STE_F 0x800ULL @@ -979,7 +982,7 @@ static inline int s390x_pte_present(unsigned long x){ /* Print flags of Segment-Table entry with format control = 1 */ static void print_segment_entry_fc1(ulong val) { - fprintf(fp, "AV=%u; ACC=%u%u%u%u; F=%u; FC=%u; P=%u; I=%u; CS=%u; TT=%u%u\n", + fprintf(fp, "AV=%u; ACC=%u%u%u%u; F=%u; FC=%u; P=%u; IEP=%u; I=%u; CS=%u; TT=%u%u\n", !!(val & S390X_STE_AV), !!(val & S390X_STE_ACC_1000), !!(val & S390X_STE_ACC_0100), @@ -988,6 +991,7 @@ static void print_segment_entry_fc1(ulong val) !!(val & S390X_STE_F), !!(val & S390X_STE_FC), !!(val & S390X_STE_P), + !!(val & S390X_STE_IEP), !!(val & S390X_STE_I), !!(val & S390X_STE_CS), !!(val & S390X_STE_TT_10), @@ -1009,7 +1013,7 @@ static void print_segment_entry_fc0(ulong val) /* Print flags of Region-Third-Table entry with format control = 1 */ static void print_region_third_entry_fc1(ulong val) { - fprintf(fp, "AV=%u; ACC=%u%u%u%u; F=%u; FC=%u; P=%u; I=%u; CR=%u; TT=%u%u\n", + fprintf(fp, "AV=%u; ACC=%u%u%u%u; F=%u; FC=%u; P=%u; IEP=%u; I=%u; CR=%u; TT=%u%u\n", !!(val & S390X_RTE_AV), !!(val & S390X_RTE_ACC_1000), !!(val & S390X_RTE_ACC_0100), @@ -1018,6 +1022,7 @@ static void print_region_third_entry_fc1(ulong val) !!(val & S390X_RTE_F), !!(val & S390X_RTE_FC), !!(val & S390X_RTE_P), + !!(val & S390X_RTE_IEP), !!(val & S390X_RTE_I), !!(val & S390X_RTE_CR), !!(val & S390X_RTE_TT_10), @@ -1151,8 +1156,10 @@ static ulong _kl_pg_table_deref_s390x(ulong vaddr, ulong table, int verbose) if (verbose) { fprintf(fp, "%5s: %016lx => %016lx (flags = %03llx)\n", "PTE", addr, entry, entry & S390X_PTE_FLAG_BITS); - fprintf(fp, " flags in binary : I=%u; P=%u\n", - !!(entry & S390X_PAGE_INVALID), !!(entry & S390X_PAGE_RO)); + fprintf(fp, " flags in binary : I=%u; P=%u; IEP=%u\n", + !!(entry & S390X_PAGE_INVALID), + !!(entry & S390X_PAGE_RO), + !!(entry & S390X_PAGE_IEP)); fprintf(fp, "%5s: %016llx\n", "PAGE", entry & ~S390X_PTE_FLAG_BITS); } /* -- 2.49.0