Re: [Crash-utility] [PATCH] arm64: Add lowercase tcr_el1_t1sz

From: John Donnelly <john.p.donnelly(a)oracle.com&gt; Commit 1c45cea "arm64: Change tcr_el1_t1sz variable name to TCR_EL1_T1SZ", renamed the variable to upper case, but there are kernels in existence that still have the lower case name, which breaks crash backwards compatibility.

Resolves: https://github.com/crash-utility/crash/pull/82 Signed-off-by: John Donnelly <john.p.donnelly(a)oracle.com&gt; Signed-off-by: Kazuhito Hagio <k-hagio-ab(a)nec.com&gt; --- The lowercase tcr_el1_t1sz was not seen upstream, but crash had it once, we should have added the uppercase name, not replaced it. So I ack this. arm64.c | 3 ++- netdump.c | 3 ++- 2 files changed, 4 insertions(+), 2 deletions(-) diff --git a/arm64.c b/arm64.c index 4787fa61e3e5..8934961b109d 100644 --- a/arm64.c +++ b/arm64.c @@ -3936,7 +3936,8 @@ arm64_calc_VA_BITS(void) } else if (ACTIVE()) error(FATAL, "cannot determine VA_BITS_ACTUAL: please use /proc/kcore\n"); else { - if ((string = pc->read_vmcoreinfo("NUMBER(TCR_EL1_T1SZ)"))) { + if ((string = pc->read_vmcoreinfo("NUMBER(TCR_EL1_T1SZ)")) || + (string = pc->read_vmcoreinfo("NUMBER(tcr_el1_t1sz)"))) { /* See ARMv8 ARM for the description of * TCR_EL1.T1SZ and how it can be used * to calculate the vabits_actual diff --git a/netdump.c b/netdump.c index c1c9cbfaed94..aaea945aaca7 100644 --- a/netdump.c +++ b/netdump.c @@ -1921,7 +1921,8 @@ vmcoreinfo_read_string(const char *key) sprintf(value, "%ld", nd->arch_data2 & 0xffffffff); return value; } - if (STREQ(key, "NUMBER(TCR_EL1_T1SZ)") && nd->arch_data2) { + if ((STREQ(key, "NUMBER(TCR_EL1_T1SZ)") || + STREQ(key, "NUMBER(tcr_el1_t1sz)")) && nd->arch_data2) { value = calloc(VADDR_PRLEN+1, sizeof(char)); sprintf(value, "%lld", ((ulonglong)nd->arch_data2 >> 32) & 0xffffffff); pc->read_vmcoreinfo = no_vmcoreinfo; -- 2.27.0