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[Qemu-devel] [PULL v2 48/50] postcopy: Allow shared memory
From: |
Michael S. Tsirkin |
Subject: |
[Qemu-devel] [PULL v2 48/50] postcopy: Allow shared memory |
Date: |
Tue, 20 Mar 2018 05:18:00 +0200 |
From: "Dr. David Alan Gilbert" <address@hidden>
Now that we have the mechanisms in here, allow shared memory in a
postcopy.
Note that QEMU can't tell who all the users of shared regions are
and thus can't tell whether all the users of the shared regions
have appropriate support for postcopy. Those devices that explicitly
support shared memory (e.g. vhost-user) must check, but it doesn't
stop weirder configurations causing problems.
Signed-off-by: Dr. David Alan Gilbert <address@hidden>
Reviewed-by: Marc-André Lureau <address@hidden>
Reviewed-by: Michael S. Tsirkin <address@hidden>
Signed-off-by: Michael S. Tsirkin <address@hidden>
---
migration/postcopy-ram.c | 6 ------
1 file changed, 6 deletions(-)
diff --git a/migration/postcopy-ram.c b/migration/postcopy-ram.c
index 9cdee0f..188c2ca 100644
--- a/migration/postcopy-ram.c
+++ b/migration/postcopy-ram.c
@@ -215,12 +215,6 @@ static int test_ramblock_postcopiable(const char
*block_name, void *host_addr,
RAMBlock *rb = qemu_ram_block_by_name(block_name);
size_t pagesize = qemu_ram_pagesize(rb);
- if (qemu_ram_is_shared(rb)) {
- error_report("Postcopy on shared RAM (%s) is not yet supported",
- block_name);
- return 1;
- }
-
if (length % pagesize) {
error_report("Postcopy requires RAM blocks to be a page size multiple,"
" block %s is 0x" RAM_ADDR_FMT " bytes with a "
--
MST
- [Qemu-devel] [PULL v2 37/50] vhost+postcopy: Stash RAMBlock and offset, (continued)
- [Qemu-devel] [PULL v2 37/50] vhost+postcopy: Stash RAMBlock and offset, Michael S. Tsirkin, 2018/03/19
- [Qemu-devel] [PULL v2 36/50] vhost+postcopy: Send address back to qemu, Michael S. Tsirkin, 2018/03/19
- [Qemu-devel] [PULL v2 38/50] vhost+postcopy: Helper to send requests to source for shared pages, Michael S. Tsirkin, 2018/03/19
- [Qemu-devel] [PULL v2 39/50] vhost+postcopy: Resolve client address, Michael S. Tsirkin, 2018/03/19
- [Qemu-devel] [PULL v2 30/50] postcopy: Allow registering of fd handler, Michael S. Tsirkin, 2018/03/19
- [Qemu-devel] [PULL v2 40/50] postcopy: helper for waking shared, Michael S. Tsirkin, 2018/03/19
- [Qemu-devel] [PULL v2 46/50] vhost+postcopy: Wire up POSTCOPY_END notify, Michael S. Tsirkin, 2018/03/19
- [Qemu-devel] [PULL v2 43/50] vhost+postcopy: Call wakeups, Michael S. Tsirkin, 2018/03/19
- [Qemu-devel] [PULL v2 44/50] libvhost-user: mprotect & madvises for postcopy, Michael S. Tsirkin, 2018/03/19
- [Qemu-devel] [PULL v2 35/50] libvhost-user+postcopy: Register new regions with the ufd, Michael S. Tsirkin, 2018/03/19
- [Qemu-devel] [PULL v2 48/50] postcopy: Allow shared memory,
Michael S. Tsirkin <=
- [Qemu-devel] [PULL v2 42/50] vhost+postcopy: Add vhost waker, Michael S. Tsirkin, 2018/03/19
- [Qemu-devel] [PULL v2 45/50] vhost-user: Add VHOST_USER_POSTCOPY_END message, Michael S. Tsirkin, 2018/03/19
- [Qemu-devel] [PULL v2 50/50] postcopy shared docs, Michael S. Tsirkin, 2018/03/19
- [Qemu-devel] [PULL v2 41/50] postcopy: postcopy_notify_shared_wake, Michael S. Tsirkin, 2018/03/19
- [Qemu-devel] [PULL v2 47/50] vhost: Huge page align and merge, Michael S. Tsirkin, 2018/03/19
- [Qemu-devel] [PULL v2 49/50] libvhost-user: Claim support for postcopy, Michael S. Tsirkin, 2018/03/19
- Re: [Qemu-devel] [PULL v2 00/50] virtio, vhost, pci, pc: features, cleanups, Peter Maydell, 2018/03/20
- Re: [Qemu-devel] [PULL v2 00/50] virtio, vhost, pci, pc: features, cleanups, Michael S. Tsirkin, 2018/03/20
- Re: [Qemu-devel] [PULL v2 00/50] virtio, vhost, pci, pc: features, cleanups, Michael S. Tsirkin, 2018/03/20