Attachment 851010 Details for Bug 1052837 – Patch to help examine the DMI blob built by qemu-kvm

[patch] Patch to help examine the DMI blob built by qemu-kvm

0001-smbios-DEBUG-Print-the-table.patch (text/plain), 3.42 KB, created by Markus Armbruster on 2014-01-16 11:05:10 UTC

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Creator: Markus Armbruster

Created: 2014-01-16 11:05:10 UTC

Size: 3.42 KB

patch

obsolete

>From 8e1a0de9f60951ae9a263a236653214219db8b73 Mon Sep 17 00:00:00 2001
>From: Markus Armbruster <armbru@redhat.com>
>Date: Thu, 16 Jan 2014 11:52:57 +0100
>Subject: [PATCH] smbios DEBUG: Print the table
>
>---
> hw/i386/smbios.c | 77 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++
> 1 file changed, 77 insertions(+)
>
>diff --git a/hw/i386/smbios.c b/hw/i386/smbios.c
>index e8f41ad..90e1e86 100644
>--- a/hw/i386/smbios.c
>+++ b/hw/i386/smbios.c
>@@ -156,12 +156,89 @@ static void smbios_register_config(void)
> 
> machine_init(smbios_register_config);
> 
>+static void smbios_print_table(void)
>+{
>+    size_t len = smbios_entries_len;
>+    uint8_t *p = smbios_entries;
>+    uint16_t *nent_le16;
>+    uint16_t nent, entsz;
>+    int i;
>+    struct smbios_header *header;
>+    struct smbios_field *field;
>+    struct smbios_table *table;
>+    uint8_t *entry, *data;
>+    size_t datasz;
>+
>+#define EATB(sz) {                                                      \
>+    if (len < (sz)) {                                                   \
>+        printf("BUG: need %zu bytes more, got only %zu", sz, len);      \
>+        qemu_hexdump((void *)p, stdout, "\t", len);                     \
>+        return;                                                         \
>+    }                                                                   \
>+    p += (sz);                                                          \
>+    len -= (sz);                                                        \
>+}
>+#define GETB(ptr, sz) {                                                 \
>+    (ptr) = (void *)p;                                                  \
>+    EATB((sz));                                                         \
>+}
>+#define GET(ptr) GETB((ptr), sizeof(*(ptr)))
>+
>+    if (!p) {
>+        printf("SMBIOS table not defined\n");
>+        return;
>+    }
>+    printf("SMBIOS table\n\t%zu bytes\n", len);
>+    GET(nent_le16);
>+    nent = le16_to_cpu(*nent_le16);
>+    printf("\t%d entries\n", nent);
>+
>+    for (i = 0; i < nent; i++) {
>+        printf("entry#%d\n", i);
>+        entry = p;
>+        GET(header);
>+        entsz = le16_to_cpu(header->length);
>+        printf("\ttype %d sz %d\n", header->type, entsz);
>+        switch (header->type) {
>+        case SMBIOS_FIELD_ENTRY:
>+            field = (struct smbios_field *)header;
>+            EATB(sizeof(*field) - sizeof(*header));
>+            printf("\tfield type %d offset %d\n",
>+                   field->type, le16_to_cpu(field->offset));
>+            data = p;
>+            datasz = entsz - sizeof(*field);
>+            break;
>+        case SMBIOS_TABLE_ENTRY:
>+            table = (struct smbios_table *)header;
>+            assert(sizeof(*table) == sizeof(*header));
>+            data = p;
>+            datasz = entsz - sizeof(*table);
>+            break;
>+        default:
>+            printf("BUG: invalid type\n");
>+            data = (uint8_t *)header;
>+            datasz = entsz;
>+        }
>+        EATB(datasz);
>+        assert(p - entry == entsz);
>+        qemu_hexdump((void *)data, stdout, "\t", datasz);
>+    }
>+    if (len) {
>+        printf("BUG: %zu bytes left\n", len);
>+        qemu_hexdump((void *)p, stdout, "\t", len);
>+    }
>+#undef EATB
>+#undef GETB
>+#undef GET
>+}
>+
> static void smbios_validate_table(void)
> {
>     if (smbios_type4_count && smbios_type4_count != smp_cpus) {
>         error_report("Number of SMBIOS Type 4 tables must match cpu count");
>         exit(1);
>     }
>+    smbios_print_table();
> }
> 
> /*
>-- 
>1.8.1.4
>

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Attachments on bug 1052837: 851010