1 files changed, 0 insertions, 40 deletions
diff --git a/system/xen/xsa/xsa256.patch b/system/xen/xsa/xsa256.patch
deleted file mode 100644
index 50ff24e17bd32..0000000000000
--- a/system/xen/xsa/xsa256.patch
+++ /dev/null
@@ -1,40 +0,0 @@
-From: Andrew Cooper <andrew.cooper3@citrix.com>
-Subject: x86/hvm: Disallow the creation of HVM domains without Local APIC emulation
-
-There are multiple problems, not necesserily limited to:
-
- * Guests which configure event channels via hvmop_set_evtchn_upcall_vector(),
-   or which hit %cr8 emulation will cause Xen to fall over a NULL vlapic->regs
-   pointer.
-
- * On Intel hardware, disabling the TPR_SHADOW execution control without
-   reenabling CR8_{LOAD,STORE} interception means that the guests %cr8
-   accesses interact with the real TPR.  Amongst other things, setting the
-   real TPR to 0xf blocks even IPIs from interrupting this CPU.
-
- * On hardware which sets up the use of Interrupt Posting, including
-   IOMMU-Posting, guests run without the appropriate non-root configuration,
-   which at a minimum will result in dropped interrupts.
-
-Whether no-LAPIC mode is of any use at all remains to be seen.
-
-This is XSA-256.
-
-Reported-by: Ian Jackson <ian.jackson@eu.citrix.com>
-Reviewed-by: Roger Pau Monné <roger.pau@citrix.com>
-Signed-off-by: Andrew Cooper <andrew.cooper3@citrix.com>
-Reviewed-by: Jan Beulich <jbeulich@suse.com>
-
-diff --git a/xen/arch/x86/domain.c b/xen/arch/x86/domain.c
-index f93327b..f65fc12 100644
---- a/xen/arch/x86/domain.c
-+++ b/xen/arch/x86/domain.c
-@@ -413,7 +413,7 @@ static bool emulation_flags_ok(const struct domain *d, uint32_t emflags)
-         if ( is_hardware_domain(d) &&
-              emflags != (XEN_X86_EMU_LAPIC|XEN_X86_EMU_IOAPIC) )
-             return false;
--        if ( !is_hardware_domain(d) && emflags &&
-+        if ( !is_hardware_domain(d) &&
-              emflags != XEN_X86_EMU_ALL && emflags != XEN_X86_EMU_LAPIC )
-             return false;
-     }