From 7fcf98db0df9cc374e8afe88aa57a19b0768d5ee Mon Sep 17 00:00:00 2001
From: "Jason A. Donenfeld" <Jason@zx2c4.com>
Date: Fri, 31 May 2019 21:45:42 +0200
Subject: compat: don't call xgetbv on cpus with no XSAVE

---
 src/compat/compat.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'src')

diff --git a/src/compat/compat.h b/src/compat/compat.h
index c34f754..861601c 100644
--- a/src/compat/compat.h
+++ b/src/compat/compat.h
@@ -599,7 +599,7 @@ static int wg_get_device_dump_real(a, b)
 #include <asm/xcr.h>
 static inline int cpu_has_xfeatures(u64 xfeatures_needed, const char **feature_name)
 {
-	return xgetbv(XCR_XFEATURE_ENABLED_MASK) & xfeatures_needed;
+	return boot_cpu_has(X86_FEATURE_XSAVE) && xgetbv(XCR_XFEATURE_ENABLED_MASK) & xfeatures_needed;
 }
 #endif
 #ifndef XFEATURE_MASK_YMM
-- 
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