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| author | Stefano Stabellini <stefano.stabellini@eu.citrix.com> | 2012-08-22 17:20:16 +0100 |
|---|---|---|
| committer | Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> | 2012-08-23 10:18:20 -0400 |
| commit | 1a1d43318aeb74d679372c0b65029957be274529 (patch) | |
| tree | ab4743e3094ca5239e27448fd11f6dad2bbda6ed /arch/x86/xen | |
| parent | bd3f79b71de0410352ab506496a467fcb0620912 (diff) | |
| download | blackbird-op-linux-1a1d43318aeb74d679372c0b65029957be274529.tar.gz blackbird-op-linux-1a1d43318aeb74d679372c0b65029957be274529.zip | |
xen: allow privcmd for HVM guests
This patch removes the "return -ENOSYS" for auto_translated_physmap
guests from privcmd_mmap, thus it allows ARM guests to issue privcmd
mmap calls. However privcmd mmap calls are still going to fail for HVM
and hybrid guests on x86 because the xen_remap_domain_mfn_range
implementation is currently PV only.
Changes in v2:
- better commit message;
- return -EINVAL from xen_remap_domain_mfn_range if
auto_translated_physmap.
Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Acked-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Diffstat (limited to 'arch/x86/xen')
| -rw-r--r-- | arch/x86/xen/mmu.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/x86/xen/mmu.c b/arch/x86/xen/mmu.c index 3a73785631ce..885a22354a96 100644 --- a/arch/x86/xen/mmu.c +++ b/arch/x86/xen/mmu.c @@ -2310,6 +2310,9 @@ int xen_remap_domain_mfn_range(struct vm_area_struct *vma, unsigned long range; int err = 0; + if (xen_feature(XENFEAT_auto_translated_physmap)) + return -EINVAL; + prot = __pgprot(pgprot_val(prot) | _PAGE_IOMAP); BUG_ON(!((vma->vm_flags & (VM_PFNMAP | VM_RESERVED | VM_IO)) == |
