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xen: fix usage of ENODATA

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ENODATA doesn't exist on FreeBSD, so ENODATA errors returned by the
hypervisor are translated to ENOENT.

Also, the error code is returned in errno if the call returns -1, so
compare the error code with the value in errno instead of the value
returned by the function.

Signed-off-by: Roger Pau Monné <roger.pau@citrix.com>
Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Cc: xen-devel@lists.xenproject.org
Cc: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Cc: Anthony Perard <anthony.perard@citrix.com>
This commit is contained in:
Roger Pau Monne 2014-05-23 17:57:47 +02:00 committed by Stefano Stabellini
parent 541bbb07eb
commit 74bc41511a
1 changed files with 5 additions and 2 deletions
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7
xen-hvm.c
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@ -513,11 +513,14 @@ static void xen_sync_dirty_bitmap(XenIOState *state,
start_addr >> TARGET_PAGE_BITS, npages,
bitmap);
if (rc < 0) {
if (rc != -ENODATA) {
#ifndef ENODATA
#define ENODATA ENOENT
#endif
if (errno == ENODATA) {
memory_region_set_dirty(framebuffer, 0, size);
DPRINTF("xen: track_dirty_vram failed (0x" TARGET_FMT_plx
", 0x" TARGET_FMT_plx "): %s\n",
start_addr, start_addr + size, strerror(-rc));
start_addr, start_addr + size, strerror(errno));
}
return;
}