diff options
Diffstat (limited to 'xen/arch/x86/hvm/io.c')
| -rw-r--r-- | xen/arch/x86/hvm/io.c | 16 |
1 files changed, 12 insertions, 4 deletions
diff --git a/xen/arch/x86/hvm/io.c b/xen/arch/x86/hvm/io.c index 29079f296d..3c31a6d2e4 100644 --- a/xen/arch/x86/hvm/io.c +++ b/xen/arch/x86/hvm/io.c @@ -263,8 +263,11 @@ static int dpci_ioport_read(uint32_t mport, ioreq_t *p) if ( p->data_is_ptr ) { - if ( hvm_copy_to_guest_phys(p->data + (sign * i * p->size), &data, - p->size) == HVMCOPY_gfn_paged_out ) + int ret; + ret = hvm_copy_to_guest_phys(p->data + (sign * i * p->size), &data, + p->size); + if ( (ret == HVMCOPY_gfn_paged_out) || + (ret == HVMCOPY_gfn_shared) ) return X86EMUL_RETRY; } else @@ -284,8 +287,13 @@ static int dpci_ioport_write(uint32_t mport, ioreq_t *p) data = p->data; if ( p->data_is_ptr ) { - if ( hvm_copy_from_guest_phys(&data, p->data + (sign * i * p->size), - p->size) == HVMCOPY_gfn_paged_out ) + int ret; + + ret = hvm_copy_from_guest_phys(&data, + p->data + (sign * i * p->size), + p->size); + if ( (ret == HVMCOPY_gfn_paged_out) && + (ret == HVMCOPY_gfn_shared) ) return X86EMUL_RETRY; } |