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[Qemu-devel] [PULL 13/16] smbios: Don't report unknown CPU speed (fix SV


From: Michael S. Tsirkin
Subject: [Qemu-devel] [PULL 13/16] smbios: Don't report unknown CPU speed (fix SVVP regression)
Date: Tue, 27 Jan 2015 15:14:33 +0200

From: Eduardo Habkost <address@hidden>

SVVP requires processor speed on Type 4 structures to not be unknown.
This was fixed in SeaBIOS 0.5.0 (in 2009), but the bug was reintroduced
in QEMU 2.1.

Revert to old behavior and report CPU speed as 2000 MHz instead of
unknown.

Signed-off-by: Eduardo Habkost <address@hidden>
Reviewed-by: Michael S. Tsirkin <address@hidden>
Signed-off-by: Michael S. Tsirkin <address@hidden>
Reviewed-by: Paolo Bonzini <address@hidden>
---
 hw/i386/smbios.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/hw/i386/smbios.c b/hw/i386/smbios.c
index ae7032a..12d2137 100644
--- a/hw/i386/smbios.c
+++ b/hw/i386/smbios.c
@@ -618,8 +618,9 @@ static void smbios_build_type_4_table(unsigned instance)
     SMBIOS_TABLE_SET_STR(4, processor_version_str, type4.version);
     t->voltage = 0;
     t->external_clock = cpu_to_le16(0); /* Unknown */
-    t->max_speed = cpu_to_le16(0); /* Unknown */
-    t->current_speed = cpu_to_le16(0); /* Unknown */
+    /* SVVP requires max_speed and current_speed to not be unknown. */
+    t->max_speed = cpu_to_le16(2000); /* 2000 MHz */
+    t->current_speed = cpu_to_le16(2000); /* 2000 MHz */
     t->status = 0x41; /* Socket populated, CPU enabled */
     t->processor_upgrade = 0x01; /* Other */
     t->l1_cache_handle = cpu_to_le16(0xFFFF); /* N/A */
-- 
MST




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