qemu-devel.nongnu.org archive mirror
 help / color / mirror / Atom feed
From: Markus Armbruster <armbru@redhat.com>
To: qemu-devel@nongnu.org
Cc: claudio.fontana@huawei.com, cam@cs.ualberta.ca,
	mlureau@redhat.com, david.marchand@6wind.com,
	pbonzini@redhat.com
Subject: [Qemu-devel] [PATCH v2 06/42] qemu-doc: Fix ivshmem huge page example
Date: Mon,  7 Mar 2016 20:25:18 +0100	[thread overview]
Message-ID: <1457378754-21649-7-git-send-email-armbru@redhat.com> (raw)
In-Reply-To: <1457378754-21649-1-git-send-email-armbru@redhat.com>

Option parameter "share" is missing.  Without it, you get a *private*
mmap(), which defeats ivshmem's purpose pretty thoroughly ;)

While there, switch to the conventional mountpoint of hugetlbfs
/dev/hugepages.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
---
 qemu-doc.texi | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/qemu-doc.texi b/qemu-doc.texi
index bc9dd13..65f3b29 100644
--- a/qemu-doc.texi
+++ b/qemu-doc.texi
@@ -1311,7 +1311,7 @@ Instead of specifying the <shm size> using POSIX shm, you may specify
 a memory backend that has hugepage support:
 
 @example
-qemu-system-i386 -object memory-backend-file,size=1G,mem-path=/mnt/hugepages/my-shmem-file,id=mb1
+qemu-system-i386 -object memory-backend-file,size=1G,mem-path=/dev/hugepages/my-shmem-file,share,id=mb1
                  -device ivshmem,x-memdev=mb1
 @end example
 
-- 
2.4.3

  parent reply	other threads:[~2016-03-07 19:26 UTC|newest]

Thread overview: 74+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-03-07 19:25 [Qemu-devel] [PATCH v2 00/42] ivshmem: Fixes, cleanups, device model split Markus Armbruster
2016-03-07 19:25 ` [Qemu-devel] [PATCH v2 01/42] exec: Fix memory allocation when memory path names new file Markus Armbruster
2016-03-07 19:25 ` [Qemu-devel] [PATCH v2 02/42] exec: Fix memory allocation when memory path isn't on hugetlbfs Markus Armbruster
2016-03-08 14:17   ` Paolo Bonzini
2016-03-15 16:41     ` Markus Armbruster
2016-03-15 16:56       ` Paolo Bonzini
2016-03-07 19:25 ` [Qemu-devel] [PATCH v2 03/42] target-ppc: Document TOCTTOU in hugepage support Markus Armbruster
2016-03-09 12:44   ` Marc-André Lureau
2016-03-09 20:05     ` Markus Armbruster
2016-03-07 19:25 ` [Qemu-devel] [PATCH v2 04/42] ivshmem-server: Fix and clean up command line help Markus Armbruster
2016-03-09 12:44   ` Marc-André Lureau
2016-03-07 19:25 ` [Qemu-devel] [PATCH v2 05/42] ivshmem-server: Don't overload POSIX shmem and file name Markus Armbruster
2016-03-09 12:44   ` Marc-André Lureau
2016-03-09 20:14     ` Markus Armbruster
2016-03-10  0:44       ` Marc-André Lureau
2016-03-10  6:57         ` Markus Armbruster
2016-03-07 19:25 ` Markus Armbruster [this message]
2016-03-07 19:25 ` [Qemu-devel] [PATCH v2 07/42] event_notifier: Make event_notifier_init_fd() #ifdef CONFIG_EVENTFD Markus Armbruster
2016-03-07 19:25 ` [Qemu-devel] [PATCH v2 08/42] tests/libqos/pci-pc: Fix qpci_pc_iomap() to map BARs aligned Markus Armbruster
2016-03-07 19:25 ` [Qemu-devel] [PATCH v2 09/42] ivshmem-test: Improve test case /ivshmem/single Markus Armbruster
2016-03-07 19:25 ` [Qemu-devel] [PATCH v2 10/42] ivshmem-test: Clean up wait for devices to become operational Markus Armbruster
2016-03-07 19:25 ` [Qemu-devel] [PATCH v2 11/42] ivshmem-test: Improve test cases /ivshmem/server-* Markus Armbruster
2016-03-07 19:25 ` [Qemu-devel] [PATCH v2 12/42] ivshmem: Rewrite specification document Markus Armbruster
2016-03-07 19:25 ` [Qemu-devel] [PATCH v2 13/42] ivshmem: Add missing newlines to debug printfs Markus Armbruster
2016-03-07 19:25 ` [Qemu-devel] [PATCH v2 14/42] ivshmem: Compile debug prints unconditionally to prevent bit-rot Markus Armbruster
2016-03-07 19:25 ` [Qemu-devel] [PATCH v2 15/42] ivshmem: Clean up after commit 9940c32 Markus Armbruster
2016-03-07 19:25 ` [Qemu-devel] [PATCH v2 16/42] ivshmem: Drop ivshmem_event() stub Markus Armbruster
2016-03-07 19:25 ` [Qemu-devel] [PATCH v2 17/42] ivshmem: Don't destroy the chardev on version mismatch Markus Armbruster
2016-03-07 19:25 ` [Qemu-devel] [PATCH v2 18/42] ivshmem: Fix harmless misuse of Error Markus Armbruster
2016-03-07 19:25 ` [Qemu-devel] [PATCH v2 19/42] ivshmem: Failed realize() can leave migration blocker behind Markus Armbruster
2016-03-07 19:25 ` [Qemu-devel] [PATCH v2 20/42] ivshmem: Clean up register callbacks Markus Armbruster
2016-03-07 19:25 ` [Qemu-devel] [PATCH v2 21/42] ivshmem: Clean up MSI-X conditions Markus Armbruster
2016-03-09 12:45   ` Marc-André Lureau
2016-03-09 20:15     ` Markus Armbruster
2016-03-07 19:25 ` [Qemu-devel] [PATCH v2 22/42] ivshmem: Leave INTx alone when using MSI-X Markus Armbruster
2016-03-09 12:45   ` Marc-André Lureau
2016-03-09 20:16     ` Markus Armbruster
2016-03-07 19:25 ` [Qemu-devel] [PATCH v2 23/42] ivshmem: Assert interrupts are set up once Markus Armbruster
2016-03-07 19:25 ` [Qemu-devel] [PATCH v2 24/42] ivshmem: Simplify rejection of invalid peer ID from server Markus Armbruster
2016-03-07 19:25 ` [Qemu-devel] [PATCH v2 25/42] ivshmem: Disentangle ivshmem_read() Markus Armbruster
2016-03-09 12:45   ` Marc-André Lureau
2016-03-07 19:25 ` [Qemu-devel] [PATCH v2 26/42] ivshmem: Plug leaks on unplug, fix peer disconnect Markus Armbruster
2016-03-09 12:45   ` Marc-André Lureau
2016-03-07 19:25 ` [Qemu-devel] [PATCH v2 27/42] ivshmem: Receive shared memory synchronously in realize() Markus Armbruster
2016-03-09 12:45   ` Marc-André Lureau
2016-03-07 19:25 ` [Qemu-devel] [PATCH v2 28/42] ivshmem: Propagate errors through ivshmem_recv_setup() Markus Armbruster
2016-03-09 12:46   ` Marc-André Lureau
2016-03-09 20:25     ` Markus Armbruster
2016-03-10  0:44       ` Marc-André Lureau
2016-03-10  6:38         ` Markus Armbruster
2016-03-07 19:25 ` [Qemu-devel] [PATCH v2 29/42] ivshmem: Rely on server sending the ID right after the version Markus Armbruster
2016-03-07 19:25 ` [Qemu-devel] [PATCH v2 30/42] ivshmem: Drop the hackish test for UNIX domain chardev Markus Armbruster
2016-03-07 19:25 ` [Qemu-devel] [PATCH v2 31/42] ivshmem: Simplify how we cope with short reads from server Markus Armbruster
2016-03-09 12:46   ` Marc-André Lureau
2016-03-07 19:25 ` [Qemu-devel] [PATCH v2 32/42] ivshmem: Tighten check of property "size" Markus Armbruster
2016-03-07 19:25 ` [Qemu-devel] [PATCH v2 33/42] ivshmem: Implement shm=... with a memory backend Markus Armbruster
2016-03-09 11:31   ` Marc-André Lureau
2016-03-09 20:59     ` Markus Armbruster
2016-03-10  0:44       ` Marc-André Lureau
2016-03-10  6:48         ` Markus Armbruster
2016-03-07 19:25 ` [Qemu-devel] [PATCH v2 34/42] ivshmem: Simplify memory regions for BAR 2 (shared memory) Markus Armbruster
2016-03-09 12:46   ` Marc-André Lureau
2016-03-07 19:25 ` [Qemu-devel] [PATCH v2 35/42] ivshmem: Inline check_shm_size() into its only caller Markus Armbruster
2016-03-07 19:25 ` [Qemu-devel] [PATCH v2 36/42] qdev: New DEFINE_PROP_ON_OFF_AUTO Markus Armbruster
2016-03-07 19:25 ` [Qemu-devel] [PATCH v2 37/42] ivshmem: Replace int role_val by OnOffAuto master Markus Armbruster
2016-03-09 12:46   ` Marc-André Lureau
2016-03-07 19:25 ` [Qemu-devel] [PATCH v2 38/42] ivshmem: Split ivshmem-plain, ivshmem-doorbell off ivshmem Markus Armbruster
2016-03-07 19:25 ` [Qemu-devel] [PATCH v2 39/42] ivshmem: Clean up after the previous commit Markus Armbruster
2016-03-07 19:25 ` [Qemu-devel] [PATCH v2 40/42] ivshmem: Drop ivshmem property x-memdev Markus Armbruster
2016-03-09 12:47   ` Marc-André Lureau
2016-03-07 19:25 ` [Qemu-devel] [PATCH v2 41/42] ivshmem: Require master to have ID zero Markus Armbruster
2016-03-07 19:25 ` [Qemu-devel] [PATCH v2 42/42] contrib/ivshmem-server: Print "not for production" warning Markus Armbruster
2016-03-08 14:05 ` [Qemu-devel] [PATCH v2 00/42] ivshmem: Fixes, cleanups, device model split Paolo Bonzini
2016-03-08 14:22 ` Paolo Bonzini

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=1457378754-21649-7-git-send-email-armbru@redhat.com \
    --to=armbru@redhat.com \
    --cc=cam@cs.ualberta.ca \
    --cc=claudio.fontana@huawei.com \
    --cc=david.marchand@6wind.com \
    --cc=mlureau@redhat.com \
    --cc=pbonzini@redhat.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).