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From f3125f6379cbc070e9acaf58d0ec37972992744b Mon Sep 17 00:00:00 2001
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From: Thomas Huth <thuth@redhat.com>
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Date: Wed, 6 Apr 2022 10:56:26 +0200
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Subject: [PATCH 4/5] s390x/css: fix PMCW invalid mask
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RH-Author: Thomas Huth <thuth@redhat.com>
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RH-MergeRequest: 145: s390x/css: fix PMCW invalid mask
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RH-Commit: [1/1] fbf192f651aa668af56ca5c77455595fcdb19508
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RH-Bugzilla: 2071070
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RH-Acked-by: Jon Maloy <jmaloy@redhat.com>
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RH-Acked-by: David Hildenbrand <david@redhat.com>
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RH-Acked-by: Cornelia Huck <cohuck@redhat.com>
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Bugzilla: http://bugzilla.redhat.com/2071070
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commit 2df59b73e0864f021f6179f32f7ed364f6d4f38d
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Author: Nico Boehr <nrb@linux.ibm.com>
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Date: Thu Dec 16 14:16:57 2021 +0100
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s390x/css: fix PMCW invalid mask
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Previously, we required bits 5, 6 and 7 to be zero (0x07 == 0b111). But,
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as per the principles of operation, bit 5 is ignored in MSCH and bits 0,
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1, 6 and 7 need to be zero.
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As both PMCW_FLAGS_MASK_INVALID and ioinst_schib_valid() are only used
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by ioinst_handle_msch(), adjust the mask accordingly.
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Fixes: db1c8f53bfb1 ("s390: Channel I/O basic definitions.")
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Signed-off-by: Nico Boehr <nrb@linux.ibm.com>
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Reviewed-by: Pierre Morel <pmorel@linux.ibm.com>
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Reviewed-by: Halil Pasic <pasic@linux.ibm.com>
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Reviewed-by: Janosch Frank <frankja@linux.ibm.com>
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Reviewed-by: Cornelia Huck <cohuck@redhat.com>
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Message-Id: <20211216131657.1057978-1-nrb@linux.ibm.com>
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Signed-off-by: Thomas Huth <thuth@redhat.com>
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Signed-off-by: Thomas Huth <thuth@redhat.com>
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---
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include/hw/s390x/ioinst.h | 2 +-
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1 file changed, 1 insertion(+), 1 deletion(-)
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diff --git a/include/hw/s390x/ioinst.h b/include/hw/s390x/ioinst.h
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index 3771fff9d4..ea8d0f2444 100644
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--- a/include/hw/s390x/ioinst.h
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+++ b/include/hw/s390x/ioinst.h
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@@ -107,7 +107,7 @@ QEMU_BUILD_BUG_MSG(sizeof(PMCW) != 28, "size of PMCW is wrong");
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#define PMCW_FLAGS_MASK_MP 0x0004
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#define PMCW_FLAGS_MASK_TF 0x0002
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#define PMCW_FLAGS_MASK_DNV 0x0001
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-#define PMCW_FLAGS_MASK_INVALID 0x0700
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+#define PMCW_FLAGS_MASK_INVALID 0xc300
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#define PMCW_CHARS_MASK_ST 0x00e00000
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#define PMCW_CHARS_MASK_MBFC 0x00000004
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--
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2.27.0
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