From 55b7ea0246ccf2153ff8f1541fa8963f4d186659 Mon Sep 17 00:00:00 2001 From: mav Date: Mon, 16 Mar 2015 20:13:25 +0000 Subject: [PATCH] Report that we may have write cache, and that we do support FLUSH. FreeBSD guest driver does not use that legacy flag, but Linux seems does. MFC after: 2 weeks --- usr.sbin/bhyve/pci_virtio_block.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/usr.sbin/bhyve/pci_virtio_block.c b/usr.sbin/bhyve/pci_virtio_block.c index 163fa0640e6a..985272ba9228 100644 --- a/usr.sbin/bhyve/pci_virtio_block.c +++ b/usr.sbin/bhyve/pci_virtio_block.c @@ -64,6 +64,7 @@ __FBSDID("$FreeBSD$"); /* Capability bits */ #define VTBLK_F_SEG_MAX (1 << 2) /* Maximum request segments */ #define VTBLK_F_BLK_SIZE (1 << 6) /* cfg block size valid */ +#define VTBLK_F_FLUSH (1 << 9) /* Cache flush support */ #define VTBLK_F_TOPOLOGY (1 << 10) /* Optimal I/O alignment */ /* @@ -72,6 +73,7 @@ __FBSDID("$FreeBSD$"); #define VTBLK_S_HOSTCAPS \ ( VTBLK_F_SEG_MAX | \ VTBLK_F_BLK_SIZE | \ + VTBLK_F_FLUSH | \ VTBLK_F_TOPOLOGY | \ VIRTIO_RING_F_INDIRECT_DESC ) /* indirect descriptors */