From 68cbecfdd7afbfdf9cb06a87a2a297e8a6add7d7 Mon Sep 17 00:00:00 2001 From: Wei Huang Date: Fri, 9 Mar 2018 12:03:23 -0500 Subject: [PATCH] dump: Update correct kdump phys_base field for AArch64 MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit For guest kernel that supports KASLR, the load address can change every time when guest VM runs. To find the physical base address correctly, current QEMU dump searches VMCOREINFO for the string "NUMBER(phys_base)=". However this string pattern is only available on x86_64. AArch64 uses a different field, called "NUMBER(PHYS_OFFSET)=". This patch makes sure QEMU dump uses the correct string on AArch64. Signed-off-by: Wei Huang Reviewed-by: Marc-André Lureau Message-id: 1520615003-20869-1-git-send-email-wei@redhat.com Signed-off-by: Peter Maydell --- dump.c | 14 +++++++++++--- 1 file changed, 11 insertions(+), 3 deletions(-) diff --git a/dump.c b/dump.c index 097e60b2b3..6bdb0dbe23 100644 --- a/dump.c +++ b/dump.c @@ -1609,10 +1609,18 @@ static void vmcoreinfo_update_phys_base(DumpState *s) lines = g_strsplit((char *)vmci, "\n", -1); for (i = 0; lines[i]; i++) { - if (g_str_has_prefix(lines[i], "NUMBER(phys_base)=")) { - if (qemu_strtou64(lines[i] + 18, NULL, 16, + const char *prefix = NULL; + + if (s->dump_info.d_machine == EM_X86_64) { + prefix = "NUMBER(phys_base)="; + } else if (s->dump_info.d_machine == EM_AARCH64) { + prefix = "NUMBER(PHYS_OFFSET)="; + } + + if (prefix && g_str_has_prefix(lines[i], prefix)) { + if (qemu_strtou64(lines[i] + strlen(prefix), NULL, 16, &phys_base) < 0) { - warn_report("Failed to read NUMBER(phys_base)="); + warn_report("Failed to read %s", prefix); } else { s->dump_info.phys_base = phys_base; } -- 2.11.4.GIT