From: Luiz Capitulino <lcapitulino@redhat.com>
To: aliguori@us.ibm.com
Cc: qemu-devel@nongnu.org
Subject: [Qemu-devel] [PULL 09/15] qmp: dump-guest-memory: improve schema doc (again)
Date: Thu, 27 Sep 2012 10:28:23 -0300 [thread overview]
Message-ID: <1348752509-1142-10-git-send-email-lcapitulino@redhat.com> (raw)
In-Reply-To: <1348752509-1142-1-git-send-email-lcapitulino@redhat.com>
o Add a note about memory allocation with paging=true
o Fix indentation
Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
---
qapi-schema.json | 32 ++++++++++++++++++++------------
1 file changed, 20 insertions(+), 12 deletions(-)
diff --git a/qapi-schema.json b/qapi-schema.json
index 191d921..c6a6767 100644
--- a/qapi-schema.json
+++ b/qapi-schema.json
@@ -2007,26 +2007,33 @@
# supported on i386 and x86_64.
#
# @paging: if true, do paging to get guest's memory mapping. This allows
-# using gdb to process the core file. However, setting @paging to false
-# may be desirable because of two reasons:
+# using gdb to process the core file.
#
-# 1. The guest may be in a catastrophic state or can have corrupted
-# memory, which cannot be trusted
-# 2. The guest can be in real-mode even if paging is enabled. For example,
-# the guest uses ACPI to sleep, and ACPI sleep state goes in real-mode
+# IMPORTANT: this option can make QEMU allocate several gigabytes
+# of RAM. This can happen for a large guest, or a
+# malicious guest pretending to be large.
+#
+# Also, paging=true has the following limitations:
+#
+# 1. The guest may be in a catastrophic state or can have corrupted
+# memory, which cannot be trusted
+# 2. The guest can be in real-mode even if paging is enabled. For
+# example, the guest uses ACPI to sleep, and ACPI sleep state
+# goes in real-mode
#
# @protocol: the filename or file descriptor of the vmcore. The supported
-# protocols are:
+# protocols are:
#
-# 1. file: the protocol starts with "file:", and the following string is
-# the file's path.
-# 2. fd: the protocol starts with "fd:", and the following string is the
-# fd's name.
+# 1. file: the protocol starts with "file:", and the following
+# string is the file's path.
+# 2. fd: the protocol starts with "fd:", and the following string
+# is the fd's name.
#
# @begin: #optional if specified, the starting physical address.
#
# @length: #optional if specified, the memory size, in bytes. If you don't
-# want to dump all guest's memory, please specify the start @begin and @length
+# want to dump all guest's memory, please specify the start @begin
+# and @length
#
# Returns: nothing on success
#
@@ -2035,6 +2042,7 @@
{ 'command': 'dump-guest-memory',
'data': { 'paging': 'bool', 'protocol': 'str', '*begin': 'int',
'*length': 'int' } }
+
##
# @netdev_add:
#
--
1.7.12.315.g682ce8b
next prev parent reply other threads:[~2012-09-27 13:28 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-09-27 13:28 [Qemu-devel] [PULL 00/15]: QMP queue Luiz Capitulino
2012-09-27 13:28 ` [Qemu-devel] [PULL 01/15] Make negotiation optional in QEMUMonitorProtocol Luiz Capitulino
2012-09-27 13:28 ` [Qemu-devel] [PULL 02/15] Support settimeout " Luiz Capitulino
2012-09-27 13:28 ` [Qemu-devel] [PULL 03/15] Add qemu-ga-client script Luiz Capitulino
2012-09-27 13:28 ` [Qemu-devel] [PULL 04/15] qapi: do not protect enum values from namespace pollution Luiz Capitulino
2012-09-27 13:28 ` [Qemu-devel] [PULL 05/15] qapi: add "unix" to the set of reserved words Luiz Capitulino
2012-09-27 13:28 ` [Qemu-devel] [PULL 06/15] pci-assign: use monitor_handle_fd_param Luiz Capitulino
2012-09-27 13:28 ` [Qemu-devel] [PULL 07/15] monitor: add Error * argument to monitor_get_fd Luiz Capitulino
2012-09-27 13:28 ` [Qemu-devel] [PULL 08/15] qapi: convert add_client Luiz Capitulino
2012-09-27 13:28 ` Luiz Capitulino [this message]
2012-09-27 13:28 ` [Qemu-devel] [PULL 10/15] qmp: dump-guest-memory: don't spin if non-blocking fd would block Luiz Capitulino
2012-09-27 13:28 ` [Qemu-devel] [PULL 11/15] hmp: dump-guest-memory: hardcode protocol argument to "file:" Luiz Capitulino
2012-09-28 17:17 ` Eric Blake
2012-09-27 13:28 ` [Qemu-devel] [PULL 12/15] input: qmp_send_key(): simplify Luiz Capitulino
2012-09-27 13:28 ` [Qemu-devel] [PULL 13/15] qmp: qmp_send_key(): accept key codes in hex Luiz Capitulino
2012-09-28 10:36 ` Amos Kong
2012-09-28 13:01 ` Eric Blake
2012-09-28 13:30 ` Luiz Capitulino
2012-09-28 13:24 ` Luiz Capitulino
2012-09-28 13:30 ` Amos Kong
2012-09-27 13:28 ` [Qemu-devel] [PULL 14/15] input: index_from_key(): drop unused code Luiz Capitulino
2012-09-27 13:28 ` [Qemu-devel] [PULL 15/15] block: live snapshot documentation tweaks Luiz Capitulino
2012-10-05 2:12 ` [Qemu-devel] [PULL 00/15]: QMP queue Anthony Liguori
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=1348752509-1142-10-git-send-email-lcapitulino@redhat.com \
--to=lcapitulino@redhat.com \
--cc=aliguori@us.ibm.com \
--cc=qemu-devel@nongnu.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).