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From 6e5f084a9839a417aaea25371af9dfe9c108cf65 Mon Sep 17 00:00:00 2001
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From: David Hildenbrand <david@redhat.com>
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Date: Fri, 21 Dec 2018 15:39:57 +0100
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Subject: [PATCH 13/14] hw/s390x: Fix bad mask in time2tod()
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RH-Author: David Hildenbrand <david@redhat.com>
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Message-id: <20181221153957.28183-13-david@redhat.com>
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Patchwork-id: 83766
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O-Subject: [RHEL-7.6.z qemu-kvm-ma PATCH 12/12] hw/s390x: Fix bad mask in time2tod()
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Bugzilla: 1672920
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RH-Acked-by: Cornelia Huck <cohuck@redhat.com>
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RH-Acked-by: Thomas Huth <thuth@redhat.com>
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RH-Acked-by: Laurent Vivier <lvivier@redhat.com>
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Since "s390x/tcg: avoid overflows in time2tod/tod2time", the
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time2tod() function tries to deal with the 9 uppermost bits in the
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time value, but uses the wrong mask for this: 0xff80000000000000 should
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be used instead of 0xff10000000000000 here.
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Fixes: 14055ce53c2d901d826ffad7fb7d6bb8ab46bdfd
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Cc: qemu-stable@nongnu.org
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Signed-off-by: Thomas Huth <thuth@redhat.com>
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Message-Id: <1544792887-14575-1-git-send-email-thuth@redhat.com>
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Reviewed-by: David Hildenbrand <david@redhat.com>
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[CH: tweaked commit message]
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Signed-off-by: Cornelia Huck <cohuck@redhat.com>
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(cherry picked from commit aba7a5a2de3dba5917024df25441f715b9249e31)
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Signed-off-by: David Hildenbrand <david@redhat.com>
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Signed-off-by: Miroslav Rezanina <mrezanin@redhat.com>
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---
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include/hw/s390x/tod.h | 2 +-
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1 file changed, 1 insertion(+), 1 deletion(-)
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diff --git a/include/hw/s390x/tod.h b/include/hw/s390x/tod.h
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index cbd7552..47ef9de 100644
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--- a/include/hw/s390x/tod.h
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+++ b/include/hw/s390x/tod.h
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@@ -56,7 +56,7 @@ typedef struct S390TODClass {
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/* Converts ns to s390's clock format */
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static inline uint64_t time2tod(uint64_t ns)
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{
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- return (ns << 9) / 125 + (((ns & 0xff10000000000000ull) / 125) << 9);
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+ return (ns << 9) / 125 + (((ns & 0xff80000000000000ull) / 125) << 9);
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}
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/* Converts s390's clock format to ns */
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--
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1.8.3.1
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