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From 3aa8ecd6ba8715d04ce13568c609f023fea1b638 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 15:36:04 +0000
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ae23c9 |
Subject: [PATCH 02/22] s390x/kvm: pass values instead of pointers to
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kvm_s390_set_clock_*()
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RH-Author: David Hildenbrand <david@redhat.com>
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Message-id: <20181221153614.27961-3-david@redhat.com>
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Patchwork-id: 83746
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O-Subject: [RHEL-8.0 qemu-kvm v2 PATCH 02/12] s390x/kvm: pass values instead of pointers to kvm_s390_set_clock_*()
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Bugzilla: 1653569
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RH-Acked-by: Cornelia Huck <cohuck@redhat.com>
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![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
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RH-Acked-by: Thomas Huth <thuth@redhat.com>
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![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
ae23c9 |
RH-Acked-by: Laurent Vivier <lvivier@redhat.com>
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![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
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We are going to factor out the TOD into a separate device and use const
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pointers for device class functions where possible. We are passing right
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now ordinary pointers that should never be touched when setting the TOD.
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ae23c9 |
Let's just pass the values directly.
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Note that s390_set_clock() will be removed in a follow-on patch and
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therefore its calling convention is not changed.
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Signed-off-by: David Hildenbrand <david@redhat.com>
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Message-Id: <20180627134410.4901-3-david@redhat.com>
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Signed-off-by: Cornelia Huck <cohuck@redhat.com>
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![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
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(cherry picked from commit 4ab6a1feac0a142045d3b7bdbb8182a99c0b8980)
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Signed-off-by: David Hildenbrand <david@redhat.com>
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![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
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Signed-off-by: Danilo C. L. de Paula <ddepaula@redhat.com>
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---
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target/s390x/cpu.c | 4 ++--
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target/s390x/kvm-stub.c | 4 ++--
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target/s390x/kvm.c | 12 ++++++------
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target/s390x/kvm_s390x.h | 4 ++--
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4 files changed, 12 insertions(+), 12 deletions(-)
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diff --git a/target/s390x/cpu.c b/target/s390x/cpu.c
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index c2b775f..1f590d1 100644
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--- a/target/s390x/cpu.c
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+++ b/target/s390x/cpu.c
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@@ -414,9 +414,9 @@ int s390_set_clock(uint8_t *tod_high, uint64_t *tod_low)
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int r = 0;
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if (kvm_enabled()) {
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- r = kvm_s390_set_clock_ext(tod_high, tod_low);
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+ r = kvm_s390_set_clock_ext(*tod_high, *tod_low);
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if (r == -ENXIO) {
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- return kvm_s390_set_clock(tod_high, tod_low);
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+ return kvm_s390_set_clock(*tod_high, *tod_low);
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}
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}
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/* Fixme TCG */
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diff --git a/target/s390x/kvm-stub.c b/target/s390x/kvm-stub.c
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index 29b1054..bf7795e 100644
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--- a/target/s390x/kvm-stub.c
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+++ b/target/s390x/kvm-stub.c
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@@ -60,12 +60,12 @@ int kvm_s390_get_clock_ext(uint8_t *tod_high, uint64_t *tod_low)
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return -ENOSYS;
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}
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-int kvm_s390_set_clock(uint8_t *tod_high, uint64_t *tod_low)
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+int kvm_s390_set_clock(uint8_t tod_high, uint64_t tod_low)
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{
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return -ENOSYS;
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}
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-int kvm_s390_set_clock_ext(uint8_t *tod_high, uint64_t *tod_low)
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+int kvm_s390_set_clock_ext(uint8_t tod_high, uint64_t tod_low)
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{
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return -ENOSYS;
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}
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diff --git a/target/s390x/kvm.c b/target/s390x/kvm.c
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index 4cb3499..1cf117b 100644
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--- a/target/s390x/kvm.c
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+++ b/target/s390x/kvm.c
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@@ -708,13 +708,13 @@ int kvm_s390_get_clock_ext(uint8_t *tod_high, uint64_t *tod_low)
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return r;
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}
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-int kvm_s390_set_clock(uint8_t *tod_high, uint64_t *tod_low)
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+int kvm_s390_set_clock(uint8_t tod_high, uint64_t tod_low)
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{
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int r;
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struct kvm_device_attr attr = {
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.group = KVM_S390_VM_TOD,
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.attr = KVM_S390_VM_TOD_LOW,
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- .addr = (uint64_t)tod_low,
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+ .addr = (uint64_t)&tod_low,
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};
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r = kvm_vm_ioctl(kvm_state, KVM_SET_DEVICE_ATTR, &attr);
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@@ -723,15 +723,15 @@ int kvm_s390_set_clock(uint8_t *tod_high, uint64_t *tod_low)
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}
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attr.attr = KVM_S390_VM_TOD_HIGH;
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- attr.addr = (uint64_t)tod_high;
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+ attr.addr = (uint64_t)&tod_high;
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return kvm_vm_ioctl(kvm_state, KVM_SET_DEVICE_ATTR, &attr);
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}
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-int kvm_s390_set_clock_ext(uint8_t *tod_high, uint64_t *tod_low)
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+int kvm_s390_set_clock_ext(uint8_t tod_high, uint64_t tod_low)
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{
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struct kvm_s390_vm_tod_clock gtod = {
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- .epoch_idx = *tod_high,
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- .tod = *tod_low,
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+ .epoch_idx = tod_high,
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+ .tod = tod_low,
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};
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struct kvm_device_attr attr = {
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.group = KVM_S390_VM_TOD,
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diff --git a/target/s390x/kvm_s390x.h b/target/s390x/kvm_s390x.h
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index c383bf4..36eb34b 100644
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--- a/target/s390x/kvm_s390x.h
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+++ b/target/s390x/kvm_s390x.h
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@@ -25,8 +25,8 @@ int kvm_s390_get_ri(void);
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int kvm_s390_get_gs(void);
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int kvm_s390_get_clock(uint8_t *tod_high, uint64_t *tod_clock);
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int kvm_s390_get_clock_ext(uint8_t *tod_high, uint64_t *tod_clock);
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-int kvm_s390_set_clock(uint8_t *tod_high, uint64_t *tod_clock);
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-int kvm_s390_set_clock_ext(uint8_t *tod_high, uint64_t *tod_clock);
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+int kvm_s390_set_clock(uint8_t tod_high, uint64_t tod_clock);
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+int kvm_s390_set_clock_ext(uint8_t tod_high, uint64_t tod_clock);
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void kvm_s390_enable_css_support(S390CPU *cpu);
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int kvm_s390_assign_subch_ioeventfd(EventNotifier *notifier, uint32_t sch,
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int vq, bool assign);
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--
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1.8.3.1
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