Date: Mon, 16 Mar 2015 20:13:26 +0000 (UTC) From: Alexander Motin <mav@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r280154 - head/usr.sbin/bhyve Message-ID: <201503162013.t2GKDQFr009617@svn.freebsd.org>
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Author: mav Date: Mon Mar 16 20:13:25 2015 New Revision: 280154 URL: https://svnweb.freebsd.org/changeset/base/280154 Log: 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 Modified: head/usr.sbin/bhyve/pci_virtio_block.c Modified: head/usr.sbin/bhyve/pci_virtio_block.c ============================================================================== --- head/usr.sbin/bhyve/pci_virtio_block.c Mon Mar 16 20:00:09 2015 (r280153) +++ head/usr.sbin/bhyve/pci_virtio_block.c Mon Mar 16 20:13:25 2015 (r280154) @@ -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 */
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