Re: [kvm-unit-tests PATCH 1/1] s390x: sclp: consider monoprocessor on read_info error

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On 4/25/23 13:33, Janosch Frank wrote:
On 4/25/23 12:53, Pierre Morel wrote:

On 4/25/23 10:26, Claudio Imbrenda wrote:
On Mon, 24 Apr 2023 19:42:18 +0200
Pierre Morel <pmorel@xxxxxxxxxxxxx> wrote:


How is this considered to be a fix and not a workaround?


Set the variable response bit in the control mask and vary the length based on stfle 140. See __init sclp_early_read_info() in drivers/s390/char/sclp_early_core.c


Yes it is something to do anyway.

Still in case of error we will need this fix or workaround.





Fixes: 52076a63d569 ("s390x: Consolidate sclp read info")
Signed-off-by: Pierre Morel <pmorel@xxxxxxxxxxxxx>
---
   lib/s390x/sclp.c | 5 +++--
   1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/lib/s390x/sclp.c b/lib/s390x/sclp.c
index acdc8a9..c09360d 100644
--- a/lib/s390x/sclp.c
+++ b/lib/s390x/sclp.c
@@ -119,8 +119,9 @@ void sclp_read_info(void)
      int sclp_get_cpu_num(void)
   {
-    assert(read_info);
-    return read_info->entries_cpu;
+    if (read_info)
+        return read_info->entries_cpu;
+    return 1;
   }
      CPUEntry *sclp_get_cpu_entries(void)




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