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| author | Jan Beulich <JBeulich@suse.com> | 2013-03-12 19:06:23 +0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-04-05 20:25:49 +0400 |
| commit | a420a7e3a40a8396104d9a62f676205f2db1a671 (patch) | |
| tree | 854c0fe3be126e3e2e1779ac2af227723a3c2c95 /arch/x86/include/asm/xen | |
| parent | e131628113867748a05c9080b9aaf67740d24057 (diff) | |
| download | linux-a420a7e3a40a8396104d9a62f676205f2db1a671.tar.xz | |
xen-pciback: notify hypervisor about devices intended to be assigned to guests
commit 909b3fdb0dd4f3db07b2d75425a00a2adb551383 upstream.
For MSI-X capable devices the hypervisor wants to write protect the
MSI-X table and PBA, yet it can't assume that resources have been
assigned to their final values at device enumeration time. Thus have
pciback do that notification, as having the device controlled by it is
a prerequisite to assigning the device to guests anyway.
This is the kernel part of hypervisor side commit 4245d33 ("x86/MSI:
add mechanism to fully protect MSI-X table from PV guest accesses") on
the master branch of git://xenbits.xen.org/xen.git.
Signed-off-by: Jan Beulich <jbeulich@suse.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'arch/x86/include/asm/xen')
| -rw-r--r-- | arch/x86/include/asm/xen/hypercall.h | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/x86/include/asm/xen/hypercall.h b/arch/x86/include/asm/xen/hypercall.h index c20d1ce62dc6..e709884d0ef9 100644 --- a/arch/x86/include/asm/xen/hypercall.h +++ b/arch/x86/include/asm/xen/hypercall.h @@ -382,14 +382,14 @@ HYPERVISOR_console_io(int cmd, int count, char *str) return _hypercall3(int, console_io, cmd, count, str); } -extern int __must_check HYPERVISOR_physdev_op_compat(int, void *); +extern int __must_check xen_physdev_op_compat(int, void *); static inline int HYPERVISOR_physdev_op(int cmd, void *arg) { int rc = _hypercall2(int, physdev_op, cmd, arg); if (unlikely(rc == -ENOSYS)) - rc = HYPERVISOR_physdev_op_compat(cmd, arg); + rc = xen_physdev_op_compat(cmd, arg); return rc; } |