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author | kfraser@localhost.localdomain <kfraser@localhost.localdomain> | 2007-09-07 11:39:10 +0100 |
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committer | kfraser@localhost.localdomain <kfraser@localhost.localdomain> | 2007-09-07 11:39:10 +0100 |
commit | 05cf544b87c791d183da579b6e9a6af06f2b93b8 (patch) | |
tree | dbdf964f1bf5f2ac789c2986a6430d38c89c5872 /tools/libxc/xc_misc.c | |
parent | 986fc80c6864d87d9578a2fc696fcc9fd1851a77 (diff) | |
download | xen-05cf544b87c791d183da579b6e9a6af06f2b93b8.tar.gz xen-05cf544b87c791d183da579b6e9a6af06f2b93b8.tar.bz2 xen-05cf544b87c791d183da579b6e9a6af06f2b93b8.zip |
xc_map_foreign_pages(), a convenient alternative to xc_map_foreign_batch()
xc_map_foreign_batch() can succeed partially. It is awkward to use
when you're only interested in complete success. Provide new
xc_map_foreign_pages() convenience function for that kind of use.
Also convert two obvious calls to use it.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Diffstat (limited to 'tools/libxc/xc_misc.c')
-rw-r--r-- | tools/libxc/xc_misc.c | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/tools/libxc/xc_misc.c b/tools/libxc/xc_misc.c index 13fa65ff18..ba50866b56 100644 --- a/tools/libxc/xc_misc.c +++ b/tools/libxc/xc_misc.c @@ -226,6 +226,39 @@ int xc_hvm_set_pci_link_route( return rc; } +void *xc_map_foreign_pages(int xc_handle, uint32_t dom, int prot, + const xen_pfn_t *arr, int num) +{ + xen_pfn_t *pfn; + void *res; + int i; + + pfn = malloc(num * sizeof(*pfn)); + if (!pfn) + return NULL; + memcpy(pfn, arr, num * sizeof(*pfn)); + + res = xc_map_foreign_batch(xc_handle, dom, prot, pfn, num); + if (res) { + for (i = 0; i < num; i++) { + if ((pfn[i] & 0xF0000000UL) == 0xF0000000UL) { + /* + * xc_map_foreign_batch() doesn't give us an error + * code, so we have to make one up. May not be the + * appropriate one. + */ + errno = EINVAL; + munmap(res, num * PAGE_SIZE); + res = NULL; + break; + } + } + } + + free(pfn); + return res; +} + /* * Local variables: * mode: C |