[Xen-devel] [PATCH V4] xen: Don't perform SMP setup.

[Anthony PERARD <anthony.perard@xxxxxxxxxx>]

This is not needed and in case one want to start a guest with fewer vCPU
than the maximum, the function will fail (infinite loop).

It's a "backport" of 5dbf1732940f94771e0b3c45c0960940276bc263.

Signed-off-by: Anthony PERARD <anthony.perard@xxxxxxxxxx>
---
v4: Fix compilation...
---
 src/smp.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/smp.c b/src/smp.c
index 3c36f8c..9681f82 100644
--- a/src/smp.c
+++ b/src/smp.c
@@ -9,6 +9,7 @@
 #include "config.h" // CONFIG_*
 #include "cmos.h" // CMOS_BIOS_SMP_COUNT
 #include "paravirt.h"
+#include "xen.h"
 
 #define APIC_ICR_LOW ((u8*)BUILD_APIC_ADDR + 0x300)
 #define APIC_SVR     ((u8*)BUILD_APIC_ADDR + 0x0F0)
@@ -84,6 +85,9 @@ int apic_id_is_present(u8 apic_id)
 void
 smp_probe(void)
 {
+    if (usingXen())
+        return;
+
     ASSERT32FLAT();
     u32 eax, ebx, ecx, cpuid_features;
     cpuid(1, &eax, &ebx, &ecx, &cpuid_features);
-- 
Anthony PERARD


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