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Re: [PATCH] s390/sclp: fix SCLP facility map


From: Thomas Huth
Subject: Re: [PATCH] s390/sclp: fix SCLP facility map
Date: Tue, 7 Nov 2023 10:45:18 +0100
User-agent: Mozilla Thunderbird

On 02/11/2023 19.50, Eric Farman wrote:
(+cc qemu-devel)

On Tue, 2023-10-24 at 12:07 +0200, Heiko Carstens wrote:
Qemu's SCLP implementation incorrectly reports that it supports CPU
reconfiguration. If a guest issues a CPU reconfiguration request it
is rejected as invalid command.

Fix the SCLP_HAS_CPU_INFO mask, and remove the unused
SCLP_CMDW_CONFIGURE_CPU and SCLP_CMDW_DECONFIGURE_CPU defines.

Reviewed-by: Eric Farman <farman@linux.ibm.com>
Reviewed-by: Halil Pasic <pasic@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
---
  include/hw/s390x/sclp.h | 4 +---
  1 file changed, 1 insertion(+), 3 deletions(-)

Thomas, any concerns? Could this get picked up for 8.2, please?

Sorry, been away from keyboard for the last 10 days... queued it now!

 Thomas



diff --git a/include/hw/s390x/sclp.h b/include/hw/s390x/sclp.h
index 9aef6d937012..b4ecd04e2341 100644
--- a/include/hw/s390x/sclp.h
+++ b/include/hw/s390x/sclp.h
@@ -38,10 +38,8 @@
  #define MAX_STORAGE_INCREMENTS                  1020
 /* CPU hotplug SCLP codes */
-#define SCLP_HAS_CPU_INFO
0x0C00000000000000ULL
+#define SCLP_HAS_CPU_INFO
0x0800000000000000ULL
  #define SCLP_CMDW_READ_CPU_INFO                 0x00010001
-#define SCLP_CMDW_CONFIGURE_CPU                 0x00110001
-#define SCLP_CMDW_DECONFIGURE_CPU               0x00100001
 /* SCLP PCI codes */
  #define SCLP_HAS_IOA_RECONFIG
0x0000000040000000ULL





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