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openSUSE:Evergreen:11.1:kernel-2.6.32
xen
19204-allow-old-images-restore.patch
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File 19204-allow-old-images-restore.patch of Package xen
# HG changeset patch # User Keir Fraser <keir.fraser@citrix.com> # Date 1235129639 0 # Node ID 7c52b7c980686ebc6e4263d0e19751fcbcaffe2b # Parent 6f7000810e594e14735197036ce3a1bdd381a018 x86 hvm: Allow restore of old images with different segment attribute format. Signed-off-by: Tim Deegan <Tim.Deegan@citrix.com> xen-unstable changeset: 19204:e6f1c66874d55fcf76ebdd4130ba55a3c8952b55 xen-unstable date: Fri Feb 13 09:29:52 2009 +0000 Index: xen-3.3.1-testing/xen/arch/x86/hvm/hvm.c =================================================================== --- xen-3.3.1-testing.orig/xen/arch/x86/hvm/hvm.c +++ xen-3.3.1-testing/xen/arch/x86/hvm/hvm.c @@ -538,6 +538,22 @@ static int hvm_load_cpu_ctxt(struct doma return -EINVAL; } + /* Older Xen versions used to save the segment arbytes directly + * from the VMCS on Intel hosts. Detect this and rearrange them + * into the struct segment_register format. */ +#define UNFOLD_ARBYTES(_r) \ + if ( (_r & 0xf000) && !(_r & 0x0f00) ) \ + _r = ((_r & 0xff) | ((_r >> 4) & 0xf00)) + UNFOLD_ARBYTES(ctxt.cs_arbytes); + UNFOLD_ARBYTES(ctxt.ds_arbytes); + UNFOLD_ARBYTES(ctxt.es_arbytes); + UNFOLD_ARBYTES(ctxt.fs_arbytes); + UNFOLD_ARBYTES(ctxt.gs_arbytes); + UNFOLD_ARBYTES(ctxt.ss_arbytes); + UNFOLD_ARBYTES(ctxt.tr_arbytes); + UNFOLD_ARBYTES(ctxt.ldtr_arbytes); +#undef UNFOLD_ARBYTES + /* Architecture-specific vmcs/vmcb bits */ if ( hvm_funcs.load_cpu_ctxt(v, &ctxt) < 0 ) return -EINVAL;
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