[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-devel] [PATCH] Don't crash xen if hvm_read() from paged or shared memory
There are two new return cases from hvm_copy_from_guest_virt() to deal with paging or shared memory -- retry the emulation rather than crash. Signed-off-by: Steven Hand <steven.hand@xxxxxxxxxxxx> diff -r 25a3b799ff0e xen/arch/x86/mm/shadow/common.c --- a/xen/arch/x86/mm/shadow/common.c Thu Mar 25 11:38:46 2010 +0000 +++ b/xen/arch/x86/mm/shadow/common.c Thu Mar 25 18:33:01 2010 +0000 @@ -180,6 +180,9 @@ case HVMCOPY_bad_gfn_to_mfn: case HVMCOPY_unhandleable: return X86EMUL_UNHANDLEABLE; + case HVMCOPY_gfn_paged_out: + case HVMCOPY_gfn_shared: + return X86EMUL_RETRY; } BUG(); _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel
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