[xen staging] x86emul: increase FPU save area in test harness/fuzzer

[patchbot@xxxxxxx]

commit 6ca70821b59849ad97c3fadc47e63c1a4af1a78c
Author:     Jan Beulich <jbeulich@xxxxxxxx>
AuthorDate: Fri Oct 23 10:13:53 2020 +0200
Commit:     Jan Beulich <jbeulich@xxxxxxxx>
CommitDate: Fri Oct 23 10:13:53 2020 +0200

    x86emul: increase FPU save area in test harness/fuzzer
    
    Running them on a system (or emulator) with AMX support requires this
    to be quite a bit larger than 8k, to avoid triggering the assert() in
    emul_test_init(). Bump all the way up to 16k right away.
    
    Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>
    Acked-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
---
 tools/tests/x86_emulator/x86-emulate.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/tests/x86_emulator/x86-emulate.c 
b/tools/tests/x86_emulator/x86-emulate.c
index 572989078a..fb34933e82 100644
--- a/tools/tests/x86_emulator/x86-emulate.c
+++ b/tools/tests/x86_emulator/x86-emulate.c
@@ -33,7 +33,7 @@
 uint32_t mxcsr_mask = 0x0000ffbf;
 struct cpuid_policy cp;
 
-static char fpu_save_area[4096] __attribute__((__aligned__((64))));
+static char fpu_save_area[0x4000] __attribute__((__aligned__((64))));
 static bool use_xsave;
 
 /*
--
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