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[Qemu-devel] [PATCH] monitor: Add an "xlate" command for translating a v
From: |
Benjamin Herrenschmidt |
Subject: |
[Qemu-devel] [PATCH] monitor: Add an "xlate" command for translating a virtual address |
Date: |
Sat, 13 Aug 2016 21:52:00 +1000 |
This is very handy when debugging a guest, especially when it's
stuck on accessing some HW and the only way to figure out what
specific piece of HW is to translate the virtual address to
a hardware address that can then be matched with the mtree
Signed-off-by: Benjamin Herrenschmidt <address@hidden>
---
hmp-commands.hx | 15 +++++++++++++++
monitor.c | 11 +++++++++++
2 files changed, 26 insertions(+)
diff --git a/hmp-commands.hx b/hmp-commands.hx
index 848efee..2d0ce4e 100644
--- a/hmp-commands.hx
+++ b/hmp-commands.hx
@@ -569,6 +569,21 @@ Write to I/O port.
ETEXI
{
+ .name = "xlate",
+ .args_type = "addr:l",
+ .params = "addr",
+ .help = "Translate virtual address via the MMU",
+ .mhandler.cmd = hmp_mmu_xlate,
+ },
+
+STEXI
address@hidden xlate @var{addr}
address@hidden xlate
+Translate virtual address
+
+ETEXI
+
+ {
.name = "sendkey",
.args_type = "keys:s,hold-time:i?",
.params = "keys [hold_ms]",
diff --git a/monitor.c b/monitor.c
index 5d68a5d..b2b3a6e 100644
--- a/monitor.c
+++ b/monitor.c
@@ -1505,6 +1505,17 @@ static void hmp_ioport_write(Monitor *mon, const QDict
*qdict)
}
}
+static void hmp_mmu_xlate(Monitor *mon, const QDict *qdict)
+{
+ CPUState *cpu = mon_get_cpu();
+ vaddr va = qdict_get_int(qdict, "addr");
+ hwaddr pa;
+
+ pa = cpu_get_phys_page_debug(cpu, va);
+ pa |= (va & ~TARGET_PAGE_MASK);
+ monitor_printf(mon, "0x%#" HWADDR_PRIx "\n", pa);
+}
+
static void hmp_boot_set(Monitor *mon, const QDict *qdict)
{
Error *local_err = NULL;
- [Qemu-devel] [PATCH] monitor: Add an "xlate" command for translating a virtual address,
Benjamin Herrenschmidt <=