git: f1b5ce0d1d75 - stable/13 - bhyve: add E820 dump function

The branch stable/13 has been updated by corvink:

URL: https://cgit.FreeBSD.org/src/commit/?id=f1b5ce0d1d75a46dfad65a6f2079376d506e9913

commit f1b5ce0d1d75a46dfad65a6f2079376d506e9913
Author:     Corvin Köhne <corvink@FreeBSD.org>
AuthorDate: 2021-09-09 09:37:03 +0000
Commit:     Corvin Köhne <corvink@FreeBSD.org>
CommitDate: 2023-05-08 08:21:32 +0000

    bhyve: add E820 dump function
    
    For debugging purposes it is helpful to dump the E820 table.
    
    Reviewed by:            markj
    MFC after:              1 week
    Sponsored by:           Beckhoff Automation GmbH & Co. KG
    Differential Revision:  https://reviews.freebsd.org/D39549
    
    (cherry picked from commit a8a8e9af574c63fbecf4719e3bf184795dc98c51)
---
 usr.sbin/bhyve/e820.c | 35 +++++++++++++++++++++++++++++++++++
 usr.sbin/bhyve/e820.h |  1 +
 2 files changed, 36 insertions(+)

diff --git a/usr.sbin/bhyve/e820.c b/usr.sbin/bhyve/e820.c
index 922381d032ce..6c43e6eda3a5 100644
--- a/usr.sbin/bhyve/e820.c
+++ b/usr.sbin/bhyve/e820.c
@@ -70,6 +70,41 @@ e820_element_alloc(uint64_t base, uint64_t end, enum e820_memory_type type)
 	return (element);
 }
 
+static const char *
+e820_get_type_name(const enum e820_memory_type type)
+{
+	switch (type) {
+	case E820_TYPE_MEMORY:
+		return ("RAM");
+	case E820_TYPE_RESERVED:
+		return ("Reserved");
+	case E820_TYPE_ACPI:
+		return ("ACPI");
+	case E820_TYPE_NVS:
+		return ("NVS");
+	default:
+		return ("Unknown");
+	}
+}
+
+void
+e820_dump_table(void)
+{
+	struct e820_element *element;
+	uint64_t i;
+
+	fprintf(stderr, "E820 map:\n");
+	
+	i = 0;
+	TAILQ_FOREACH(element, &e820_table, chain) {
+		fprintf(stderr, "  (%4lu) [%16lx, %16lx] %s\n", i,
+		    element->base, element->end,
+		    e820_get_type_name(element->type));
+
+		++i;
+	}
+}
+
 struct qemu_fwcfg_item *
 e820_get_fwcfg_item(void)
 {
diff --git a/usr.sbin/bhyve/e820.h b/usr.sbin/bhyve/e820.h
index 8b8e23422e1f..8703a55115cd 100644
--- a/usr.sbin/bhyve/e820.h
+++ b/usr.sbin/bhyve/e820.h
@@ -40,5 +40,6 @@ struct e820_entry {
 uint64_t e820_alloc(const uint64_t address, const uint64_t length,
     const uint64_t alignment, const enum e820_memory_type type,
     const enum e820_allocation_strategy strategy);
+void e820_dump_table(void);
 struct qemu_fwcfg_item *e820_get_fwcfg_item(void);
 int e820_init(struct vmctx *const ctx);