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vm-virtio: Implement multi-mapping for virtio-fs

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The virtio-fs messages coming from the slave can contain multiple
mappings (up to 8) through one single request. By implementing such
feature, the virtio-fs implementation of cloud-hypervisor is optimal and
fully functional as it resolves a bug that was seen when running fio
testing without this patch.

Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
This commit is contained in:
Sebastien Boeuf
2020-01-07 17:18:02 +01:00
parent 143471b739
commit 84445aae93
2 changed files with 78 additions and 42 deletions
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2
vhost_rs/src/vhost_user/message.rs
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@@ -631,7 +631,7 @@ bitflags! {
}
/// Max entries in one virtio-fs slave request.
const VHOST_USER_FS_SLAVE_ENTRIES: usize = 8;
pub const VHOST_USER_FS_SLAVE_ENTRIES: usize = 8;
/// Slave request message to update the MMIO window.
#[repr(packed)]