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[PATCH v2] x86/pvh: print dom0 memory map
- To: <xen-devel@xxxxxxxxxxxxxxxxxxxx>
- From: Roger Pau Monne <roger.pau@xxxxxxxxxx>
- Date: Tue, 25 Jan 2022 11:46:36 +0100
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- Cc: Roger Pau Monne <roger.pau@xxxxxxxxxx>, Jan Beulich <jbeulich@xxxxxxxx>, Andrew Cooper <andrew.cooper3@xxxxxxxxxx>, Wei Liu <wl@xxxxxxx>
- Delivery-date: Tue, 25 Jan 2022 10:46:56 +0000
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I find it useful for debugging certain issues to have the memory map
dom0 is using, so print it when using `dom0=verbose` on the command
line.
Signed-off-by: Roger Pau Monné <roger.pau@xxxxxxxxxx>
Reviewed-by: Jan Beulich <jbeulich@xxxxxxxx>
---
Changes since v1:
- Make parameter const.
---
xen/arch/x86/e820.c | 3 ++-
xen/arch/x86/hvm/dom0_build.c | 6 ++++++
xen/arch/x86/include/asm/e820.h | 2 ++
3 files changed, 10 insertions(+), 1 deletion(-)
diff --git a/xen/arch/x86/e820.c b/xen/arch/x86/e820.c
index aa602773bb..b653a19c93 100644
--- a/xen/arch/x86/e820.c
+++ b/xen/arch/x86/e820.c
@@ -88,7 +88,8 @@ static void __init add_memory_region(unsigned long long start,
e820.nr_map++;
}
-static void __init print_e820_memory_map(struct e820entry *map, unsigned int
entries)
+void __init print_e820_memory_map(const struct e820entry *map,
+ unsigned int entries)
{
unsigned int i;
diff --git a/xen/arch/x86/hvm/dom0_build.c b/xen/arch/x86/hvm/dom0_build.c
index 63dceb2116..549ff8ec7c 100644
--- a/xen/arch/x86/hvm/dom0_build.c
+++ b/xen/arch/x86/hvm/dom0_build.c
@@ -1270,6 +1270,12 @@ int __init dom0_construct_pvh(struct domain *d, const
module_t *image,
return rc;
}
+ if ( opt_dom0_verbose )
+ {
+ printk("Dom%u memory map:\n", d->domain_id);
+ print_e820_memory_map(d->arch.e820, d->arch.nr_e820);
+ }
+
printk("WARNING: PVH is an experimental mode with limited
functionality\n");
return 0;
}
diff --git a/xen/arch/x86/include/asm/e820.h b/xen/arch/x86/include/asm/e820.h
index 9d8f1ba960..92f5efa4f5 100644
--- a/xen/arch/x86/include/asm/e820.h
+++ b/xen/arch/x86/include/asm/e820.h
@@ -32,6 +32,8 @@ extern int e820_change_range_type(
extern int e820_add_range(
struct e820map *, uint64_t s, uint64_t e, uint32_t type);
extern unsigned long init_e820(const char *, struct e820map *);
+extern void print_e820_memory_map(const struct e820entry *map,
+ unsigned int entries);
extern struct e820map e820;
extern struct e820map e820_raw;
--
2.34.1
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