* [Qemu-devel] [PULL v3 for-2.4 01/11] virtio-ccw: complete handling of guest-initiated resets
2015-07-02 14:10 [Qemu-devel] [PULL v3 for-2.4 00/11] s390x patches for 2.4 Cornelia Huck
@ 2015-07-02 14:10 ` Cornelia Huck
2015-07-02 14:10 ` [Qemu-devel] [PULL v3 for-2.4 02/11] css: mss/mcss-e vs. migration Cornelia Huck
` (10 subsequent siblings)
11 siblings, 0 replies; 16+ messages in thread
From: Cornelia Huck @ 2015-07-02 14:10 UTC (permalink / raw)
To: peter.maydell
Cc: agraf, qemu-stable, qemu-devel, borntraeger, jfrei, Cornelia Huck
For a guest-initiated reset, we need to not only reset the virtio device,
but also reset the VirtioCcwDevice into a clean state. This includes
resetting the indicators, or else a guest will not be able to e.g.
switch from classic interrupts to adapter interrupts.
Split off this routine into a new function virtio_ccw_reset_virtio()
to make the distinction between resetting the virtio-related devices
and the base subchannel device clear.
CC: qemu-stable@nongnu.org
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com>
---
hw/s390x/virtio-ccw.c | 39 ++++++++++++++++++++++-----------------
1 file changed, 22 insertions(+), 17 deletions(-)
diff --git a/hw/s390x/virtio-ccw.c b/hw/s390x/virtio-ccw.c
index 9605bf4..2c81771 100644
--- a/hw/s390x/virtio-ccw.c
+++ b/hw/s390x/virtio-ccw.c
@@ -296,6 +296,25 @@ static int virtio_ccw_set_vqs(SubchDev *sch, uint64_t addr, uint32_t align,
return 0;
}
+static void virtio_ccw_reset_virtio(VirtioCcwDevice *dev, VirtIODevice *vdev)
+{
+ virtio_ccw_stop_ioeventfd(dev);
+ virtio_reset(vdev);
+ if (dev->indicators) {
+ release_indicator(&dev->routes.adapter, dev->indicators);
+ dev->indicators = NULL;
+ }
+ if (dev->indicators2) {
+ release_indicator(&dev->routes.adapter, dev->indicators2);
+ dev->indicators2 = NULL;
+ }
+ if (dev->summary_indicator) {
+ release_indicator(&dev->routes.adapter, dev->summary_indicator);
+ dev->summary_indicator = NULL;
+ }
+ dev->sch->thinint_active = false;
+}
+
static int virtio_ccw_cb(SubchDev *sch, CCW1 ccw)
{
int ret;
@@ -359,8 +378,7 @@ static int virtio_ccw_cb(SubchDev *sch, CCW1 ccw)
}
break;
case CCW_CMD_VDEV_RESET:
- virtio_ccw_stop_ioeventfd(dev);
- virtio_reset(vdev);
+ virtio_ccw_reset_virtio(dev, vdev);
ret = 0;
break;
case CCW_CMD_READ_FEAT:
@@ -500,7 +518,7 @@ static int virtio_ccw_cb(SubchDev *sch, CCW1 ccw)
}
if (virtio_set_status(vdev, status) == 0) {
if (vdev->status == 0) {
- virtio_reset(vdev);
+ virtio_ccw_reset_virtio(dev, vdev);
}
if (status & VIRTIO_CONFIG_S_DRIVER_OK) {
virtio_ccw_start_ioeventfd(dev);
@@ -1081,21 +1099,8 @@ static void virtio_ccw_reset(DeviceState *d)
VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d);
VirtIODevice *vdev = virtio_bus_get_device(&dev->bus);
- virtio_ccw_stop_ioeventfd(dev);
- virtio_reset(vdev);
+ virtio_ccw_reset_virtio(dev, vdev);
css_reset_sch(dev->sch);
- if (dev->indicators) {
- release_indicator(&dev->routes.adapter, dev->indicators);
- dev->indicators = NULL;
- }
- if (dev->indicators2) {
- release_indicator(&dev->routes.adapter, dev->indicators2);
- dev->indicators2 = NULL;
- }
- if (dev->summary_indicator) {
- release_indicator(&dev->routes.adapter, dev->summary_indicator);
- dev->summary_indicator = NULL;
- }
}
static void virtio_ccw_vmstate_change(DeviceState *d, bool running)
--
2.4.5
^ permalink raw reply related [flat|nested] 16+ messages in thread* [Qemu-devel] [PULL v3 for-2.4 02/11] css: mss/mcss-e vs. migration
2015-07-02 14:10 [Qemu-devel] [PULL v3 for-2.4 00/11] s390x patches for 2.4 Cornelia Huck
2015-07-02 14:10 ` [Qemu-devel] [PULL v3 for-2.4 01/11] virtio-ccw: complete handling of guest-initiated resets Cornelia Huck
@ 2015-07-02 14:10 ` Cornelia Huck
2015-07-02 14:10 ` [Qemu-devel] [PULL v3 for-2.4 03/11] s390-ccw.img: Consume service interrupts Cornelia Huck
` (9 subsequent siblings)
11 siblings, 0 replies; 16+ messages in thread
From: Cornelia Huck @ 2015-07-02 14:10 UTC (permalink / raw)
To: peter.maydell; +Cc: Cornelia Huck, borntraeger, jfrei, qemu-devel, agraf
Our main channel_subsys structure is not a device (yet), but we need
to setup mss/mcss-e again if the guest had enabled it before. Use
a hack that should catch most configurations (assuming that the guest
will have enabled at least one device in higher subchannel sets or
channel subsystems if it enabled the functionality.)
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
---
hw/s390x/css.c | 15 +++++++++++++++
1 file changed, 15 insertions(+)
diff --git a/hw/s390x/css.c b/hw/s390x/css.c
index 5561d80..a9cf3d7 100644
--- a/hw/s390x/css.c
+++ b/hw/s390x/css.c
@@ -1464,6 +1464,21 @@ int subch_device_load(SubchDev *s, QEMUFile *f)
}
s->ccw_fmt_1 = qemu_get_byte(f);
s->ccw_no_data_cnt = qemu_get_byte(f);
+ /*
+ * Hack alert. We don't migrate the channel subsystem status (no
+ * device!), but we need to find out if the guest enabled mss/mcss-e.
+ * If the subchannel is enabled, it certainly was able to access it,
+ * so adjust the max_ssid/max_cssid values for relevant ssid/cssid
+ * values. This is not watertight, but better than nothing.
+ */
+ if (s->curr_status.pmcw.flags & PMCW_FLAGS_MASK_ENA) {
+ if (s->ssid) {
+ channel_subsys->max_ssid = MAX_SSID;
+ }
+ if (s->cssid != channel_subsys->default_cssid) {
+ channel_subsys->max_cssid = MAX_CSSID;
+ }
+ }
return 0;
}
--
2.4.5
^ permalink raw reply related [flat|nested] 16+ messages in thread* [Qemu-devel] [PULL v3 for-2.4 03/11] s390-ccw.img: Consume service interrupts
2015-07-02 14:10 [Qemu-devel] [PULL v3 for-2.4 00/11] s390x patches for 2.4 Cornelia Huck
2015-07-02 14:10 ` [Qemu-devel] [PULL v3 for-2.4 01/11] virtio-ccw: complete handling of guest-initiated resets Cornelia Huck
2015-07-02 14:10 ` [Qemu-devel] [PULL v3 for-2.4 02/11] css: mss/mcss-e vs. migration Cornelia Huck
@ 2015-07-02 14:10 ` Cornelia Huck
2015-07-02 14:10 ` [Qemu-devel] [PULL v3 for-2.4 04/11] s390-ccw.img: update Cornelia Huck
` (8 subsequent siblings)
11 siblings, 0 replies; 16+ messages in thread
From: Cornelia Huck @ 2015-07-02 14:10 UTC (permalink / raw)
To: peter.maydell; +Cc: Cornelia Huck, borntraeger, jfrei, qemu-devel, agraf
From: Christian Borntraeger <borntraeger@de.ibm.com>
We have to consume the outstanding service interrupt after each
service call, otherwise a correct implementation will return
CC=2 on subsequent service calls.
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Reviewed-by: David Hildenbrand <dahi@linux.vnet.ibm.com>
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
---
pc-bios/s390-ccw/s390-ccw.h | 1 +
pc-bios/s390-ccw/sclp-ascii.c | 1 +
pc-bios/s390-ccw/start.S | 32 ++++++++++++++++++++++++++++++++
3 files changed, 34 insertions(+)
diff --git a/pc-bios/s390-ccw/s390-ccw.h b/pc-bios/s390-ccw/s390-ccw.h
index 9b3868b..5484c2a 100644
--- a/pc-bios/s390-ccw/s390-ccw.h
+++ b/pc-bios/s390-ccw/s390-ccw.h
@@ -47,6 +47,7 @@ typedef unsigned long long __u64;
/* start.s */
void disabled_wait(void);
+void consume_sclp_int(void);
/* main.c */
void virtio_panic(const char *string);
diff --git a/pc-bios/s390-ccw/sclp-ascii.c b/pc-bios/s390-ccw/sclp-ascii.c
index 761fb44..dc1c3e4 100644
--- a/pc-bios/s390-ccw/sclp-ascii.c
+++ b/pc-bios/s390-ccw/sclp-ascii.c
@@ -24,6 +24,7 @@ static int sclp_service_call(unsigned int command, void *sccb)
" srl %0,28"
: "=&d" (cc) : "d" (command), "a" (__pa(sccb))
: "cc", "memory");
+ consume_sclp_int();
if (cc == 3)
return -EIO;
if (cc == 2)
diff --git a/pc-bios/s390-ccw/start.S b/pc-bios/s390-ccw/start.S
index 5d5df0d..b6dd8c2 100644
--- a/pc-bios/s390-ccw/start.S
+++ b/pc-bios/s390-ccw/start.S
@@ -28,6 +28,38 @@ disabled_wait:
larl %r1,disabled_wait_psw
lpswe 0(%r1)
+
+/*
+ * void consume_sclp_int(void)
+ *
+ * eats one sclp interrupt
+ */
+ .globl consume_sclp_int
+consume_sclp_int:
+ /* enable service interrupts in cr0 */
+ stctg 0,0,0(15)
+ oi 6(15), 0x2
+ lctlg 0,0,0(15)
+ /* prepare external call handler */
+ larl %r1, external_new_code
+ stg %r1, 0x1b8
+ larl %r1, external_new_mask
+ mvc 0x1b0(8),0(%r1)
+ /* load enabled wait PSW */
+ larl %r1, enabled_wait_psw
+ lpswe 0(%r1)
+
+external_new_code:
+ /* disable service interrupts in cr0 */
+ stctg 0,0,0(15)
+ ni 6(15), 0xfd
+ lctlg 0,0,0(15)
+ br 14
+
.align 8
disabled_wait_psw:
.quad 0x0002000180000000,0x0000000000000000
+enabled_wait_psw:
+ .quad 0x0302000180000000,0x0000000000000000
+external_new_mask:
+ .quad 0x0000000180000000
--
2.4.5
^ permalink raw reply related [flat|nested] 16+ messages in thread* [Qemu-devel] [PULL v3 for-2.4 04/11] s390-ccw.img: update
2015-07-02 14:10 [Qemu-devel] [PULL v3 for-2.4 00/11] s390x patches for 2.4 Cornelia Huck
` (2 preceding siblings ...)
2015-07-02 14:10 ` [Qemu-devel] [PULL v3 for-2.4 03/11] s390-ccw.img: Consume service interrupts Cornelia Huck
@ 2015-07-02 14:10 ` Cornelia Huck
2015-07-02 14:10 ` [Qemu-devel] [PULL v3 for-2.4 05/11] s390x/css: Add a callback for when subchannel gets disabled Cornelia Huck
` (7 subsequent siblings)
11 siblings, 0 replies; 16+ messages in thread
From: Cornelia Huck @ 2015-07-02 14:10 UTC (permalink / raw)
To: peter.maydell; +Cc: Cornelia Huck, borntraeger, jfrei, qemu-devel, agraf
Update for "s390-ccw.img: Consume service interrupts".
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
---
pc-bios/s390-ccw.img | Bin 13616 -> 13784 bytes
1 file changed, 0 insertions(+), 0 deletions(-)
diff --git a/pc-bios/s390-ccw.img b/pc-bios/s390-ccw.img
index 3c6b01fc8ef792bde7f84ec4cd9676fe4ed9811f..f64380a972f280d66a4df03f029e4e1d42da292d 100644
GIT binary patch
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z0R1Qk8!RFq(??<*dw}onM@Js;dj9k%=A~$GT;~iuYO^bo2gLQ7=bnGz#g|^@c(9tO
zkPo6BoC3aQuzV?2(scu*SwtT8=TX#+a<ovzVh`fV^`pBO6i?rJWG%2bKY4!4vLV8H
zdca?e=Aig+y}_Md?C<nM0Q_8kgx~mkznC7bN8-=r21&l*k7Ft5I}x8}X@388c^I+r
z8l&q=4(8v6I+p`!tYfpDILZzGuRD|fT=)J_1pZ(@yZ=J}6@h<6;Qvts{Ce+ahC4Q{
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zg+5^tuKRLp%4>pwV96@Vt*8q60@aj@_f}tSSygTBs@jUm(g_u%B(3t2nsUl5-CR|(
zd7S}+0m=>dDodD1xk2BiAliQUyXstD`N}nTk@Br9$J=+TC2}R}aH)}7<_EXIi$B4p
z+|~Yde3vnJX#evz&#k%D<A(!zY|{q9*#9dS<UW3G55vct|Csz-gVAQf0sB06IgEb!
z9)o=N+-zI+%{-0eEBn)5#@SDvbIi(5OWw@mSUz)`bKc4~OP=$Qb=&db$LzP(g$2pV
zV}onp_&p$6zFG4124ieJu)M{?UH$Fz+0Kf;xeo2k%mlYgIAW*Kj(uD5Oz`4k$(!~^
zdANhfg7K9`JNDgQz6jJo^56CU88P|(W5I3LVEHlo4NeO>o{dQwNPqj)AerN~=D}LO
z*8gu%6g+0l5(SpLiq>X)EdR}U^avB~<xEI97Ggq6p5az}2FsiLZcDEJcv(gN_BOOF
zeWrac^WbsgOoc~j7tr^`ZpWURfm!xr4ja9uyqwu%{ES%q4EbZ_FZcC(+&s7ZG#DWE
IZOPMr0a5Gg8~^|S
--
2.4.5
^ permalink raw reply [flat|nested] 16+ messages in thread* [Qemu-devel] [PULL v3 for-2.4 05/11] s390x/css: Add a callback for when subchannel gets disabled
2015-07-02 14:10 [Qemu-devel] [PULL v3 for-2.4 00/11] s390x patches for 2.4 Cornelia Huck
` (3 preceding siblings ...)
2015-07-02 14:10 ` [Qemu-devel] [PULL v3 for-2.4 04/11] s390-ccw.img: update Cornelia Huck
@ 2015-07-02 14:10 ` Cornelia Huck
2015-07-02 14:10 ` [Qemu-devel] [PULL v3 for-2.4 06/11] s390x/virtio-ccw: add virtio set-revision call Cornelia Huck
` (6 subsequent siblings)
11 siblings, 0 replies; 16+ messages in thread
From: Cornelia Huck @ 2015-07-02 14:10 UTC (permalink / raw)
To: peter.maydell
Cc: Thomas Huth, qemu-devel, agraf, borntraeger, jfrei, Cornelia Huck
From: Thomas Huth <thuth@linux.vnet.ibm.com>
We need a possibility to run code when a subchannel gets disabled.
This patch adds the necessary infrastructure.
Signed-off-by: Thomas Huth <thuth@linux.vnet.ibm.com>
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
---
hw/s390x/css.c | 12 ++++++++++++
hw/s390x/css.h | 1 +
2 files changed, 13 insertions(+)
diff --git a/hw/s390x/css.c b/hw/s390x/css.c
index a9cf3d7..5df450e 100644
--- a/hw/s390x/css.c
+++ b/hw/s390x/css.c
@@ -588,6 +588,7 @@ int css_do_msch(SubchDev *sch, const SCHIB *orig_schib)
{
SCSW *s = &sch->curr_status.scsw;
PMCW *p = &sch->curr_status.pmcw;
+ uint16_t oldflags;
int ret;
SCHIB schib;
@@ -610,6 +611,7 @@ int css_do_msch(SubchDev *sch, const SCHIB *orig_schib)
copy_schib_from_guest(&schib, orig_schib);
/* Only update the program-modifiable fields. */
p->intparm = schib.pmcw.intparm;
+ oldflags = p->flags;
p->flags &= ~(PMCW_FLAGS_MASK_ISC | PMCW_FLAGS_MASK_ENA |
PMCW_FLAGS_MASK_LM | PMCW_FLAGS_MASK_MME |
PMCW_FLAGS_MASK_MP);
@@ -625,6 +627,12 @@ int css_do_msch(SubchDev *sch, const SCHIB *orig_schib)
(PMCW_CHARS_MASK_MBFC | PMCW_CHARS_MASK_CSENSE);
sch->curr_status.mba = schib.mba;
+ /* Has the channel been disabled? */
+ if (sch->disable_cb && (oldflags & PMCW_FLAGS_MASK_ENA) != 0
+ && (p->flags & PMCW_FLAGS_MASK_ENA) == 0) {
+ sch->disable_cb(sch);
+ }
+
ret = 0;
out:
@@ -1498,6 +1506,10 @@ void css_reset_sch(SubchDev *sch)
{
PMCW *p = &sch->curr_status.pmcw;
+ if ((p->flags & PMCW_FLAGS_MASK_ENA) != 0 && sch->disable_cb) {
+ sch->disable_cb(sch);
+ }
+
p->intparm = 0;
p->flags &= ~(PMCW_FLAGS_MASK_ISC | PMCW_FLAGS_MASK_ENA |
PMCW_FLAGS_MASK_LM | PMCW_FLAGS_MASK_MME |
diff --git a/hw/s390x/css.h b/hw/s390x/css.h
index 7e53148..a09bb1f 100644
--- a/hw/s390x/css.h
+++ b/hw/s390x/css.h
@@ -81,6 +81,7 @@ struct SubchDev {
uint8_t ccw_no_data_cnt;
/* transport-provided data: */
int (*ccw_cb) (SubchDev *, CCW1);
+ void (*disable_cb)(SubchDev *);
SenseId id;
void *driver_data;
};
--
2.4.5
^ permalink raw reply related [flat|nested] 16+ messages in thread* [Qemu-devel] [PULL v3 for-2.4 06/11] s390x/virtio-ccw: add virtio set-revision call
2015-07-02 14:10 [Qemu-devel] [PULL v3 for-2.4 00/11] s390x patches for 2.4 Cornelia Huck
` (4 preceding siblings ...)
2015-07-02 14:10 ` [Qemu-devel] [PULL v3 for-2.4 05/11] s390x/css: Add a callback for when subchannel gets disabled Cornelia Huck
@ 2015-07-02 14:10 ` Cornelia Huck
2015-07-02 14:10 ` [Qemu-devel] [PULL v3 for-2.4 07/11] s390x/virtio-ccw: support virtio-1 set_vq format Cornelia Huck
` (5 subsequent siblings)
11 siblings, 0 replies; 16+ messages in thread
From: Cornelia Huck @ 2015-07-02 14:10 UTC (permalink / raw)
To: peter.maydell
Cc: Thomas Huth, qemu-devel, agraf, borntraeger, jfrei, Cornelia Huck
From: Thomas Huth <thuth@linux.vnet.ibm.com>
Handle the virtio-ccw revision according to what the guest sets.
When revision 1 is selected, we have a virtio-1 standard device
with byteswapping for the virtio rings.
When a channel gets disabled, we have to revert to the legacy behavior
in case the next user of the device does not negotiate the revision 1
anymore (e.g. the boot firmware uses revision 1, but the operating
system only uses the legacy mode).
Note that revisions > 0 are still disabled.
[CH: assure memory accesses are always BE]
Signed-off-by: Thomas Huth <thuth@linux.vnet.ibm.com>
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
---
hw/s390x/virtio-ccw.c | 78 +++++++++++++++++++++++++++++++++++++++++++++++++--
hw/s390x/virtio-ccw.h | 8 ++++++
2 files changed, 84 insertions(+), 2 deletions(-)
diff --git a/hw/s390x/virtio-ccw.c b/hw/s390x/virtio-ccw.c
index 2c81771..0b3a0e7 100644
--- a/hw/s390x/virtio-ccw.c
+++ b/hw/s390x/virtio-ccw.c
@@ -21,6 +21,7 @@
#include "hw/sysbus.h"
#include "qemu/bitops.h"
#include "qemu/error-report.h"
+#include "hw/virtio/virtio-access.h"
#include "hw/virtio/virtio-bus.h"
#include "hw/s390x/adapter.h"
#include "hw/s390x/s390_flic.h"
@@ -261,6 +262,12 @@ typedef struct VirtioThinintInfo {
uint8_t isc;
} QEMU_PACKED VirtioThinintInfo;
+typedef struct VirtioRevInfo {
+ uint16_t revision;
+ uint16_t length;
+ uint8_t data[0];
+} QEMU_PACKED VirtioRevInfo;
+
/* Specify where the virtqueues for the subchannel are in guest memory. */
static int virtio_ccw_set_vqs(SubchDev *sch, uint64_t addr, uint32_t align,
uint16_t index, uint16_t num)
@@ -319,6 +326,7 @@ static int virtio_ccw_cb(SubchDev *sch, CCW1 ccw)
{
int ret;
VqInfoBlock info;
+ VirtioRevInfo revinfo;
uint8_t status;
VirtioFeatDesc features;
void *config;
@@ -401,7 +409,16 @@ static int virtio_ccw_cb(SubchDev *sch, CCW1 ccw)
MEMTXATTRS_UNSPECIFIED,
NULL);
if (features.index == 0) {
- features.features = vdev->host_features;
+ features.features = (uint32_t)vdev->host_features;
+ } else if (features.index == 1) {
+ features.features = (uint32_t)(vdev->host_features >> 32);
+ /*
+ * Don't offer version 1 to the guest if it did not
+ * negotiate at least revision 1.
+ */
+ if (dev->revision <= 0) {
+ features.features &= ~(1 << (VIRTIO_F_VERSION_1 - 32));
+ }
} else {
/* Return zeroes if the guest supports more feature bits. */
features.features = 0;
@@ -437,7 +454,20 @@ static int virtio_ccw_cb(SubchDev *sch, CCW1 ccw)
MEMTXATTRS_UNSPECIFIED,
NULL);
if (features.index == 0) {
- virtio_set_features(vdev, features.features);
+ virtio_set_features(vdev,
+ (vdev->guest_features & 0xffffffff00000000ULL) |
+ features.features);
+ } else if (features.index == 1) {
+ /*
+ * The guest should not set version 1 if it didn't
+ * negotiate a revision >= 1.
+ */
+ if (dev->revision <= 0) {
+ features.features &= ~(1 << (VIRTIO_F_VERSION_1 - 32));
+ }
+ virtio_set_features(vdev,
+ (vdev->guest_features & 0x00000000ffffffffULL) |
+ ((uint64_t)features.features << 32));
} else {
/*
* If the guest supports more feature bits, assert that it
@@ -658,6 +688,40 @@ static int virtio_ccw_cb(SubchDev *sch, CCW1 ccw)
}
}
break;
+ case CCW_CMD_SET_VIRTIO_REV:
+ len = sizeof(revinfo);
+ if (ccw.count < len) {
+ ret = -EINVAL;
+ break;
+ }
+ if (!ccw.cda) {
+ ret = -EFAULT;
+ break;
+ }
+ revinfo.revision =
+ address_space_lduw_be(&address_space_memory, ccw.cda,
+ MEMTXATTRS_UNSPECIFIED, NULL);
+ revinfo.length =
+ address_space_lduw_be(&address_space_memory,
+ ccw.cda + sizeof(revinfo.revision),
+ MEMTXATTRS_UNSPECIFIED, NULL);
+ if (ccw.count < len + revinfo.length ||
+ (check_len && ccw.count > len + revinfo.length)) {
+ ret = -EINVAL;
+ break;
+ }
+ /*
+ * Once we start to support revisions with additional data, we'll
+ * need to fetch it here. Nothing to do for now, though.
+ */
+ if (dev->revision >= 0 ||
+ revinfo.revision > virtio_ccw_rev_max(vdev)) {
+ ret = -ENOSYS;
+ break;
+ }
+ ret = 0;
+ dev->revision = revinfo.revision;
+ break;
default:
ret = -ENOSYS;
break;
@@ -665,6 +729,13 @@ static int virtio_ccw_cb(SubchDev *sch, CCW1 ccw)
return ret;
}
+static void virtio_sch_disable_cb(SubchDev *sch)
+{
+ VirtioCcwDevice *dev = sch->driver_data;
+
+ dev->revision = -1;
+}
+
static void virtio_ccw_device_realize(VirtioCcwDevice *dev, Error **errp)
{
unsigned int cssid = 0;
@@ -784,12 +855,15 @@ static void virtio_ccw_device_realize(VirtioCcwDevice *dev, Error **errp)
css_sch_build_virtual_schib(sch, 0, VIRTIO_CCW_CHPID_TYPE);
sch->ccw_cb = virtio_ccw_cb;
+ sch->disable_cb = virtio_sch_disable_cb;
/* Build senseid data. */
memset(&sch->id, 0, sizeof(SenseId));
sch->id.reserved = 0xff;
sch->id.cu_type = VIRTIO_CCW_CU_TYPE;
+ dev->revision = -1;
+
if (k->realize) {
k->realize(dev, &err);
}
diff --git a/hw/s390x/virtio-ccw.h b/hw/s390x/virtio-ccw.h
index d729263..692ddd7 100644
--- a/hw/s390x/virtio-ccw.h
+++ b/hw/s390x/virtio-ccw.h
@@ -41,6 +41,7 @@
#define CCW_CMD_SET_CONF_IND 0x53
#define CCW_CMD_READ_VQ_CONF 0x32
#define CCW_CMD_SET_IND_ADAPTER 0x73
+#define CCW_CMD_SET_VIRTIO_REV 0x83
#define TYPE_VIRTIO_CCW_DEVICE "virtio-ccw-device"
#define VIRTIO_CCW_DEVICE(obj) \
@@ -86,6 +87,7 @@ struct VirtioCcwDevice {
DeviceState parent_obj;
SubchDev *sch;
char *bus_id;
+ int revision;
VirtioBusState bus;
bool ioeventfd_started;
bool ioeventfd_disabled;
@@ -99,6 +101,12 @@ struct VirtioCcwDevice {
uint64_t ind_bit;
};
+/* The maximum virtio revision we support. */
+static inline int virtio_ccw_rev_max(VirtIODevice *vdev)
+{
+ return 0;
+}
+
/* virtual css bus type */
typedef struct VirtualCssBus {
BusState parent_obj;
--
2.4.5
^ permalink raw reply related [flat|nested] 16+ messages in thread* [Qemu-devel] [PULL v3 for-2.4 07/11] s390x/virtio-ccw: support virtio-1 set_vq format
2015-07-02 14:10 [Qemu-devel] [PULL v3 for-2.4 00/11] s390x patches for 2.4 Cornelia Huck
` (5 preceding siblings ...)
2015-07-02 14:10 ` [Qemu-devel] [PULL v3 for-2.4 06/11] s390x/virtio-ccw: add virtio set-revision call Cornelia Huck
@ 2015-07-02 14:10 ` Cornelia Huck
2015-07-02 14:10 ` [Qemu-devel] [PULL v3 for-2.4 08/11] virtio-ccw: migrate ->revision Cornelia Huck
` (4 subsequent siblings)
11 siblings, 0 replies; 16+ messages in thread
From: Cornelia Huck @ 2015-07-02 14:10 UTC (permalink / raw)
To: peter.maydell; +Cc: Cornelia Huck, borntraeger, jfrei, qemu-devel, agraf
Support the new CCW_CMD_SET_VQ format for virtio-1 devices.
While we're at it, refactor the code a bit and enforce big endian
fields (which had always been required, even for legacy).
Reviewed-by: Thomas Huth <thuth@linux.vnet.ibm.com>
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
---
hw/s390x/virtio-ccw.c | 133 ++++++++++++++++++++++++++++++++++----------------
1 file changed, 92 insertions(+), 41 deletions(-)
diff --git a/hw/s390x/virtio-ccw.c b/hw/s390x/virtio-ccw.c
index 0b3a0e7..8597ac4 100644
--- a/hw/s390x/virtio-ccw.c
+++ b/hw/s390x/virtio-ccw.c
@@ -238,11 +238,20 @@ VirtualCssBus *virtual_css_bus_init(void)
}
/* Communication blocks used by several channel commands. */
-typedef struct VqInfoBlock {
+typedef struct VqInfoBlockLegacy {
uint64_t queue;
uint32_t align;
uint16_t index;
uint16_t num;
+} QEMU_PACKED VqInfoBlockLegacy;
+
+typedef struct VqInfoBlock {
+ uint64_t desc;
+ uint32_t res0;
+ uint16_t index;
+ uint16_t num;
+ uint64_t avail;
+ uint64_t used;
} QEMU_PACKED VqInfoBlock;
typedef struct VqConfigBlock {
@@ -269,17 +278,20 @@ typedef struct VirtioRevInfo {
} QEMU_PACKED VirtioRevInfo;
/* Specify where the virtqueues for the subchannel are in guest memory. */
-static int virtio_ccw_set_vqs(SubchDev *sch, uint64_t addr, uint32_t align,
- uint16_t index, uint16_t num)
+static int virtio_ccw_set_vqs(SubchDev *sch, VqInfoBlock *info,
+ VqInfoBlockLegacy *linfo)
{
VirtIODevice *vdev = virtio_ccw_get_vdev(sch);
+ uint16_t index = info ? info->index : linfo->index;
+ uint16_t num = info ? info->num : linfo->num;
+ uint64_t desc = info ? info->desc : linfo->queue;
if (index >= VIRTIO_CCW_QUEUE_MAX) {
return -EINVAL;
}
/* Current code in virtio.c relies on 4K alignment. */
- if (addr && (align != 4096)) {
+ if (linfo && desc && (linfo->align != 4096)) {
return -EINVAL;
}
@@ -287,8 +299,12 @@ static int virtio_ccw_set_vqs(SubchDev *sch, uint64_t addr, uint32_t align,
return -EINVAL;
}
- virtio_queue_set_addr(vdev, index, addr);
- if (!addr) {
+ if (info) {
+ virtio_queue_set_rings(vdev, index, desc, info->avail, info->used);
+ } else {
+ virtio_queue_set_addr(vdev, index, desc);
+ }
+ if (!desc) {
virtio_queue_set_vector(vdev, index, VIRTIO_NO_VECTOR);
} else {
/* Fail if we don't have a big enough queue. */
@@ -322,10 +338,78 @@ static void virtio_ccw_reset_virtio(VirtioCcwDevice *dev, VirtIODevice *vdev)
dev->sch->thinint_active = false;
}
-static int virtio_ccw_cb(SubchDev *sch, CCW1 ccw)
+static int virtio_ccw_handle_set_vq(SubchDev *sch, CCW1 ccw, bool check_len,
+ bool is_legacy)
{
int ret;
VqInfoBlock info;
+ VqInfoBlockLegacy linfo;
+ size_t info_len = is_legacy ? sizeof(linfo) : sizeof(info);
+
+ if (check_len) {
+ if (ccw.count != info_len) {
+ return -EINVAL;
+ }
+ } else if (ccw.count < info_len) {
+ /* Can't execute command. */
+ return -EINVAL;
+ }
+ if (!ccw.cda) {
+ return -EFAULT;
+ }
+ if (is_legacy) {
+ linfo.queue = address_space_ldq_be(&address_space_memory, ccw.cda,
+ MEMTXATTRS_UNSPECIFIED, NULL);
+ linfo.align = address_space_ldl_be(&address_space_memory,
+ ccw.cda + sizeof(linfo.queue),
+ MEMTXATTRS_UNSPECIFIED,
+ NULL);
+ linfo.index = address_space_lduw_be(&address_space_memory,
+ ccw.cda + sizeof(linfo.queue)
+ + sizeof(linfo.align),
+ MEMTXATTRS_UNSPECIFIED,
+ NULL);
+ linfo.num = address_space_lduw_be(&address_space_memory,
+ ccw.cda + sizeof(linfo.queue)
+ + sizeof(linfo.align)
+ + sizeof(linfo.index),
+ MEMTXATTRS_UNSPECIFIED,
+ NULL);
+ ret = virtio_ccw_set_vqs(sch, NULL, &linfo);
+ } else {
+ info.desc = address_space_ldq_be(&address_space_memory, ccw.cda,
+ MEMTXATTRS_UNSPECIFIED, NULL);
+ info.index = address_space_lduw_be(&address_space_memory,
+ ccw.cda + sizeof(info.desc)
+ + sizeof(info.res0),
+ MEMTXATTRS_UNSPECIFIED, NULL);
+ info.num = address_space_lduw_be(&address_space_memory,
+ ccw.cda + sizeof(info.desc)
+ + sizeof(info.res0)
+ + sizeof(info.index),
+ MEMTXATTRS_UNSPECIFIED, NULL);
+ info.avail = address_space_ldq_be(&address_space_memory,
+ ccw.cda + sizeof(info.desc)
+ + sizeof(info.res0)
+ + sizeof(info.index)
+ + sizeof(info.num),
+ MEMTXATTRS_UNSPECIFIED, NULL);
+ info.used = address_space_ldq_be(&address_space_memory,
+ ccw.cda + sizeof(info.desc)
+ + sizeof(info.res0)
+ + sizeof(info.index)
+ + sizeof(info.num)
+ + sizeof(info.avail),
+ MEMTXATTRS_UNSPECIFIED, NULL);
+ ret = virtio_ccw_set_vqs(sch, &info, NULL);
+ }
+ sch->curr_status.scsw.count = 0;
+ return ret;
+}
+
+static int virtio_ccw_cb(SubchDev *sch, CCW1 ccw)
+{
+ int ret;
VirtioRevInfo revinfo;
uint8_t status;
VirtioFeatDesc features;
@@ -350,40 +434,7 @@ static int virtio_ccw_cb(SubchDev *sch, CCW1 ccw)
/* Look at the command. */
switch (ccw.cmd_code) {
case CCW_CMD_SET_VQ:
- if (check_len) {
- if (ccw.count != sizeof(info)) {
- ret = -EINVAL;
- break;
- }
- } else if (ccw.count < sizeof(info)) {
- /* Can't execute command. */
- ret = -EINVAL;
- break;
- }
- if (!ccw.cda) {
- ret = -EFAULT;
- } else {
- info.queue = address_space_ldq(&address_space_memory, ccw.cda,
- MEMTXATTRS_UNSPECIFIED, NULL);
- info.align = address_space_ldl(&address_space_memory,
- ccw.cda + sizeof(info.queue),
- MEMTXATTRS_UNSPECIFIED,
- NULL);
- info.index = address_space_lduw(&address_space_memory,
- ccw.cda + sizeof(info.queue)
- + sizeof(info.align),
- MEMTXATTRS_UNSPECIFIED,
- NULL);
- info.num = address_space_lduw(&address_space_memory,
- ccw.cda + sizeof(info.queue)
- + sizeof(info.align)
- + sizeof(info.index),
- MEMTXATTRS_UNSPECIFIED,
- NULL);
- ret = virtio_ccw_set_vqs(sch, info.queue, info.align, info.index,
- info.num);
- sch->curr_status.scsw.count = 0;
- }
+ ret = virtio_ccw_handle_set_vq(sch, ccw, check_len, dev->revision < 1);
break;
case CCW_CMD_VDEV_RESET:
virtio_ccw_reset_virtio(dev, vdev);
--
2.4.5
^ permalink raw reply related [flat|nested] 16+ messages in thread* [Qemu-devel] [PULL v3 for-2.4 08/11] virtio-ccw: migrate ->revision
2015-07-02 14:10 [Qemu-devel] [PULL v3 for-2.4 00/11] s390x patches for 2.4 Cornelia Huck
` (6 preceding siblings ...)
2015-07-02 14:10 ` [Qemu-devel] [PULL v3 for-2.4 07/11] s390x/virtio-ccw: support virtio-1 set_vq format Cornelia Huck
@ 2015-07-02 14:10 ` Cornelia Huck
2015-07-07 11:32 ` Christian Borntraeger
2015-07-02 14:10 ` [Qemu-devel] [PULL v3 for-2.4 09/11] s390x/ipl: Fix boot if no bootindex was specified Cornelia Huck
` (3 subsequent siblings)
11 siblings, 1 reply; 16+ messages in thread
From: Cornelia Huck @ 2015-07-02 14:10 UTC (permalink / raw)
To: peter.maydell; +Cc: Cornelia Huck, borntraeger, jfrei, qemu-devel, agraf
We need to migrate the revision field as well. No compatibility
concerns as we already introduced migration of ->config_vector in
this release.
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
---
hw/s390x/virtio-ccw.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/hw/s390x/virtio-ccw.c b/hw/s390x/virtio-ccw.c
index 8597ac4..d631337 100644
--- a/hw/s390x/virtio-ccw.c
+++ b/hw/s390x/virtio-ccw.c
@@ -1472,6 +1472,7 @@ static void virtio_ccw_save_config(DeviceState *d, QEMUFile *f)
qemu_put_be16(f, vdev->config_vector);
qemu_put_be64(f, dev->routes.adapter.ind_offset);
qemu_put_byte(f, dev->thinint_isc);
+ qemu_put_be32(f, dev->revision);
}
static int virtio_ccw_load_config(DeviceState *d, QEMUFile *f)
@@ -1512,6 +1513,7 @@ static int virtio_ccw_load_config(DeviceState *d, QEMUFile *f)
dev->thinint_isc, true, false,
&dev->routes.adapter.adapter_id);
}
+ dev->revision = qemu_get_be32(f);
return 0;
}
--
2.4.5
^ permalink raw reply related [flat|nested] 16+ messages in thread* Re: [Qemu-devel] [PULL v3 for-2.4 08/11] virtio-ccw: migrate ->revision
2015-07-02 14:10 ` [Qemu-devel] [PULL v3 for-2.4 08/11] virtio-ccw: migrate ->revision Cornelia Huck
@ 2015-07-07 11:32 ` Christian Borntraeger
2015-07-07 11:47 ` [Qemu-devel] [PATCH] s390/virtio-ccw: Fix migration Christian Borntraeger
0 siblings, 1 reply; 16+ messages in thread
From: Christian Borntraeger @ 2015-07-07 11:32 UTC (permalink / raw)
To: Cornelia Huck, peter.maydell; +Cc: jfrei, qemu-devel, agraf
Am 02.07.2015 um 16:10 schrieb Cornelia Huck:
> We need to migrate the revision field as well. No compatibility
> concerns as we already introduced migration of ->config_vector in
> this release.
>
> Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
> ---
> hw/s390x/virtio-ccw.c | 2 ++
> 1 file changed, 2 insertions(+)
>
> diff --git a/hw/s390x/virtio-ccw.c b/hw/s390x/virtio-ccw.c
> index 8597ac4..d631337 100644
> --- a/hw/s390x/virtio-ccw.c
> +++ b/hw/s390x/virtio-ccw.c
> @@ -1472,6 +1472,7 @@ static void virtio_ccw_save_config(DeviceState *d, QEMUFile *f)
> qemu_put_be16(f, vdev->config_vector);
> qemu_put_be64(f, dev->routes.adapter.ind_offset);
> qemu_put_byte(f, dev->thinint_isc);
> + qemu_put_be32(f, dev->revision);
> }
>
> static int virtio_ccw_load_config(DeviceState *d, QEMUFile *f)
> @@ -1512,6 +1513,7 @@ static int virtio_ccw_load_config(DeviceState *d, QEMUFile *f)
> dev->thinint_isc, true, false,
> &dev->routes.adapter.adapter_id);
> }
> + dev->revision = qemu_get_be32(f);
>
> return 0;
> }
>
This broke migration:
2015-07-07T11:22:55.570968Z qemu-system-s390x: VQ 39 address 0x0 inconsistent with Host index 0x100
2015-07-07T11:22:55.571008Z qemu-system-s390x: error while loading state for instance 0x0 of
Seems that revision is used before it is loaded, something like
diff --git a/hw/s390x/virtio-ccw.c b/hw/s390x/virtio-ccw.c
index d631337..f524140 100644
--- a/hw/s390x/virtio-ccw.c
+++ b/hw/s390x/virtio-ccw.c
@@ -1448,6 +1448,7 @@ static void virtio_ccw_save_config(DeviceState *d, QEMUFile *f)
VirtIODevice *vdev = virtio_ccw_get_vdev(s);
subch_device_save(s, f);
+ qemu_put_be32(f, dev->revision);
if (dev->indicators != NULL) {
qemu_put_be32(f, dev->indicators->len);
qemu_put_be64(f, dev->indicators->addr);
@@ -1472,7 +1473,6 @@ static void virtio_ccw_save_config(DeviceState *d, QEMUFile *f)
qemu_put_be16(f, vdev->config_vector);
qemu_put_be64(f, dev->routes.adapter.ind_offset);
qemu_put_byte(f, dev->thinint_isc);
- qemu_put_be32(f, dev->revision);
}
static int virtio_ccw_load_config(DeviceState *d, QEMUFile *f)
@@ -1484,6 +1484,7 @@ static int virtio_ccw_load_config(DeviceState *d, QEMUFile *f)
s->driver_data = dev;
subch_device_load(s, f);
+ dev->revision = qemu_get_be32(f);
len = qemu_get_be32(f);
if (len != 0) {
dev->indicators = get_indicator(qemu_get_be64(f), len);
@@ -1513,7 +1514,6 @@ static int virtio_ccw_load_config(DeviceState *d, QEMUFile *f)
dev->thinint_isc, true, false,
&dev->routes.adapter.adapter_id);
}
- dev->revision = qemu_get_be32(f);
return 0;
}
Seems to do the trick.
^ permalink raw reply related [flat|nested] 16+ messages in thread* [Qemu-devel] [PATCH] s390/virtio-ccw: Fix migration
2015-07-07 11:32 ` Christian Borntraeger
@ 2015-07-07 11:47 ` Christian Borntraeger
2015-07-07 14:24 ` Cornelia Huck
0 siblings, 1 reply; 16+ messages in thread
From: Christian Borntraeger @ 2015-07-07 11:47 UTC (permalink / raw)
To: Cornelia Huck, peter.maydell
Cc: Christian Borntraeger, jfrei, qemu-devel, agraf
commit 213941d73b ("virtio-ccw: migrate ->revision") broke
migration:
2015-07-07T11:22:55.570968Z qemu-system-s390x: VQ 39 address 0x0 inconsistent with Host index 0x100
2015-07-07T11:22:55.571008Z qemu-system-s390x: error while loading state for instance 0x0 of
If thinint support is active, the config_load function returns early.
Make sure to load the revision all the time.
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Fixes: 213941d73b ("virtio-ccw: migrate ->revision")
---
hw/s390x/virtio-ccw.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/hw/s390x/virtio-ccw.c b/hw/s390x/virtio-ccw.c
index d631337..cc74c5c 100644
--- a/hw/s390x/virtio-ccw.c
+++ b/hw/s390x/virtio-ccw.c
@@ -1508,12 +1508,12 @@ static int virtio_ccw_load_config(DeviceState *d, QEMUFile *f)
qemu_get_be16s(f, &vdev->config_vector);
dev->routes.adapter.ind_offset = qemu_get_be64(f);
dev->thinint_isc = qemu_get_byte(f);
+ dev->revision = qemu_get_be32(f);
if (s->thinint_active) {
return css_register_io_adapter(CSS_IO_ADAPTER_VIRTIO,
dev->thinint_isc, true, false,
&dev->routes.adapter.adapter_id);
}
- dev->revision = qemu_get_be32(f);
return 0;
}
--
2.3.0
^ permalink raw reply related [flat|nested] 16+ messages in thread* Re: [Qemu-devel] [PATCH] s390/virtio-ccw: Fix migration
2015-07-07 11:47 ` [Qemu-devel] [PATCH] s390/virtio-ccw: Fix migration Christian Borntraeger
@ 2015-07-07 14:24 ` Cornelia Huck
0 siblings, 0 replies; 16+ messages in thread
From: Cornelia Huck @ 2015-07-07 14:24 UTC (permalink / raw)
To: Christian Borntraeger; +Cc: peter.maydell, jfrei, qemu-devel, agraf
On Tue, 7 Jul 2015 13:47:23 +0200
Christian Borntraeger <borntraeger@de.ibm.com> wrote:
> commit 213941d73b ("virtio-ccw: migrate ->revision") broke
> migration:
> 2015-07-07T11:22:55.570968Z qemu-system-s390x: VQ 39 address 0x0 inconsistent with Host index 0x100
> 2015-07-07T11:22:55.571008Z qemu-system-s390x: error while loading state for instance 0x0 of
>
> If thinint support is active, the config_load function returns early.
> Make sure to load the revision all the time.
>
> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
> Fixes: 213941d73b ("virtio-ccw: migrate ->revision")
Hmpf, somebody was sloppy with testing... applied to my s390-next tree.
> ---
> hw/s390x/virtio-ccw.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/hw/s390x/virtio-ccw.c b/hw/s390x/virtio-ccw.c
> index d631337..cc74c5c 100644
> --- a/hw/s390x/virtio-ccw.c
> +++ b/hw/s390x/virtio-ccw.c
> @@ -1508,12 +1508,12 @@ static int virtio_ccw_load_config(DeviceState *d, QEMUFile *f)
> qemu_get_be16s(f, &vdev->config_vector);
> dev->routes.adapter.ind_offset = qemu_get_be64(f);
> dev->thinint_isc = qemu_get_byte(f);
> + dev->revision = qemu_get_be32(f);
> if (s->thinint_active) {
> return css_register_io_adapter(CSS_IO_ADAPTER_VIRTIO,
> dev->thinint_isc, true, false,
> &dev->routes.adapter.adapter_id);
> }
> - dev->revision = qemu_get_be32(f);
>
> return 0;
> }
^ permalink raw reply [flat|nested] 16+ messages in thread
* [Qemu-devel] [PULL v3 for-2.4 09/11] s390x/ipl: Fix boot if no bootindex was specified
2015-07-02 14:10 [Qemu-devel] [PULL v3 for-2.4 00/11] s390x patches for 2.4 Cornelia Huck
` (7 preceding siblings ...)
2015-07-02 14:10 ` [Qemu-devel] [PULL v3 for-2.4 08/11] virtio-ccw: migrate ->revision Cornelia Huck
@ 2015-07-02 14:10 ` Cornelia Huck
2015-07-02 14:10 ` [Qemu-devel] [PULL v3 for-2.4 10/11] s390x/gdb: synchronize cpu state after modifying acrs Cornelia Huck
` (2 subsequent siblings)
11 siblings, 0 replies; 16+ messages in thread
From: Cornelia Huck @ 2015-07-02 14:10 UTC (permalink / raw)
To: peter.maydell
Cc: qemu-stable, qemu-devel, agraf, borntraeger, jfrei, Cornelia Huck,
Paolo Bonzini
From: Christian Borntraeger <borntraeger@de.ibm.com>
commit fa92e218df1d ("s390x/ipl: avoid sign extension") introduced
a regression:
qemu-system-s390x -drive file=image.qcow,format=qcow2
does not boot, the bios states
"No virtio-blk device found!"
adding bootindex=1 does boot.
The reason is that the uint32_t as return value will not do the right
thing for the return -1 (default without bootindex).
The bios itself, will interpret a 64bit -1 as autodetect (but it will
interpret 32bit -1 as ccw device address ff.ff.ffff)
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Cornelia Huck <cornelia.huck@de.ibm.com>
Cc: qemu-stable@nongnu.org # v2.3.0
Tested-by: Aurelien Jarno <aurelien@aurel32.net>
Reviewed-by: Aurelien Jarno <aurelien@aurel32.net>
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
---
hw/s390x/ipl.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/hw/s390x/ipl.c b/hw/s390x/ipl.c
index 132004a..2e0a8b6 100644
--- a/hw/s390x/ipl.c
+++ b/hw/s390x/ipl.c
@@ -218,7 +218,7 @@ static Property s390_ipl_properties[] = {
* - -1 if no valid boot device was found
* - ccw id of the boot device otherwise
*/
-static uint32_t s390_update_iplstate(CPUS390XState *env, S390IPLState *ipl)
+static uint64_t s390_update_iplstate(CPUS390XState *env, S390IPLState *ipl)
{
DeviceState *dev_st;
@@ -248,7 +248,7 @@ static uint32_t s390_update_iplstate(CPUS390XState *env, S390IPLState *ipl)
return -1;
out:
- return ipl->cssid << 24 | ipl->ssid << 16 | ipl->devno;
+ return (uint32_t) (ipl->cssid << 24 | ipl->ssid << 16 | ipl->devno);
}
int s390_ipl_update_diag308(IplParameterBlock *iplb)
--
2.4.5
^ permalink raw reply related [flat|nested] 16+ messages in thread* [Qemu-devel] [PULL v3 for-2.4 10/11] s390x/gdb: synchronize cpu state after modifying acrs
2015-07-02 14:10 [Qemu-devel] [PULL v3 for-2.4 00/11] s390x patches for 2.4 Cornelia Huck
` (8 preceding siblings ...)
2015-07-02 14:10 ` [Qemu-devel] [PULL v3 for-2.4 09/11] s390x/ipl: Fix boot if no bootindex was specified Cornelia Huck
@ 2015-07-02 14:10 ` Cornelia Huck
2015-07-02 14:10 ` [Qemu-devel] [PULL v3 for-2.4 11/11] s390x/migration: Introduce 2.4 machine Cornelia Huck
2015-07-02 15:25 ` [Qemu-devel] [PULL v3 for-2.4 00/11] s390x patches for 2.4 Peter Maydell
11 siblings, 0 replies; 16+ messages in thread
From: Cornelia Huck @ 2015-07-02 14:10 UTC (permalink / raw)
To: peter.maydell
Cc: borntraeger, qemu-devel, agraf, David Hildenbrand, jfrei,
Cornelia Huck
From: David Hildenbrand <dahi@linux.vnet.ibm.com>
Whenever we touch the access control registers, we have to make sure that
the values will make it into kvm. Otherwise the change will simply be lost.
When synchronizing qemu and kvm, a normal KVM_PUT_RUNTIME_STATE does not take
care of these registers. Let's simply trigger a KVM_PUT_FULL_STATE sync,
so the values will directly be written to kvm. The performance overhead can
be ignored and this is much cleaner than manually writing these registers to kvm
via our two supported ways.
Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: David Hildenbrand <dahi@linux.vnet.ibm.com>
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
---
target-s390x/gdbstub.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/target-s390x/gdbstub.c b/target-s390x/gdbstub.c
index ddc14a6..31f2049 100644
--- a/target-s390x/gdbstub.c
+++ b/target-s390x/gdbstub.c
@@ -92,6 +92,7 @@ static int cpu_write_ac_reg(CPUS390XState *env, uint8_t *mem_buf, int n)
switch (n) {
case S390_A0_REGNUM ... S390_A15_REGNUM:
env->aregs[n] = ldl_p(mem_buf);
+ cpu_synchronize_post_init(ENV_GET_CPU(env));
return 4;
default:
return 0;
--
2.4.5
^ permalink raw reply related [flat|nested] 16+ messages in thread* [Qemu-devel] [PULL v3 for-2.4 11/11] s390x/migration: Introduce 2.4 machine
2015-07-02 14:10 [Qemu-devel] [PULL v3 for-2.4 00/11] s390x patches for 2.4 Cornelia Huck
` (9 preceding siblings ...)
2015-07-02 14:10 ` [Qemu-devel] [PULL v3 for-2.4 10/11] s390x/gdb: synchronize cpu state after modifying acrs Cornelia Huck
@ 2015-07-02 14:10 ` Cornelia Huck
2015-07-02 15:25 ` [Qemu-devel] [PULL v3 for-2.4 00/11] s390x patches for 2.4 Peter Maydell
11 siblings, 0 replies; 16+ messages in thread
From: Cornelia Huck @ 2015-07-02 14:10 UTC (permalink / raw)
To: peter.maydell
Cc: agraf, Juan Quintela, qemu-devel, Dr. David Alan Gilbert,
borntraeger, jfrei, Jason J. Herne, Boris Fiuczynski,
Cornelia Huck
From: Christian Borntraeger <borntraeger@de.ibm.com>
The section footer changes commit f68945d42bab ("Add a protective
section footer") and commit 37fb569c0198 ("Disable section footers
on older machine types") broke migration for any non-versioned
machines.
This pinpoints a problem of s390-ccw machines: it needs to
be versioned to be compatible with future changes in common
code data structures such as section footers.
Let's introduce a version scheme for s390-ccw-virtio machines.
We will use the old s390-ccw-virtio name as alias to the latest
version as all existing libvirt XML for the ccw type were expanded
by libvirt to that name.
The only downside of this patch is, that the old alias s390-ccw
will no longer be available as machines can have only one alias,
but it should not really matter.
Cc: Dr. David Alan Gilbert <dgilbert@redhat.com>
Cc: Juan Quintela <quintela@redhat.com>
Cc: Boris Fiuczynski <fiuczy@linux.vnet.ibm.com>
Cc: Jason J. Herne <jjherne@linux.vnet.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Message-Id: <1435742217-62246-1-git-send-email-borntraeger@de.ibm.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
---
hw/s390x/s390-virtio-ccw.c | 22 ++++++++++++++++++----
1 file changed, 18 insertions(+), 4 deletions(-)
diff --git a/hw/s390x/s390-virtio-ccw.c b/hw/s390x/s390-virtio-ccw.c
index c574988..3d20d6a 100644
--- a/hw/s390x/s390-virtio-ccw.c
+++ b/hw/s390x/s390-virtio-ccw.c
@@ -204,9 +204,6 @@ static void ccw_machine_class_init(ObjectClass *oc, void *data)
MachineClass *mc = MACHINE_CLASS(oc);
NMIClass *nc = NMI_CLASS(oc);
- mc->name = "s390-ccw-virtio";
- mc->alias = "s390-ccw";
- mc->desc = "VirtIO-ccw based S390 machine";
mc->init = ccw_init;
mc->block_default_type = IF_VIRTIO;
mc->no_cdrom = 1;
@@ -216,7 +213,6 @@ static void ccw_machine_class_init(ObjectClass *oc, void *data)
mc->no_sdcard = 1;
mc->use_sclp = 1;
mc->max_cpus = 255;
- mc->is_default = 1;
nc->nmi_monitor_handler = s390_nmi;
}
@@ -272,6 +268,7 @@ static inline void s390_machine_initfn(Object *obj)
static const TypeInfo ccw_machine_info = {
.name = TYPE_S390_CCW_MACHINE,
.parent = TYPE_MACHINE,
+ .abstract = true,
.instance_size = sizeof(S390CcwMachineState),
.instance_init = s390_machine_initfn,
.class_init = ccw_machine_class_init,
@@ -281,9 +278,26 @@ static const TypeInfo ccw_machine_info = {
},
};
+static void ccw_machine_2_4_class_init(ObjectClass *oc, void *data)
+{
+ MachineClass *mc = MACHINE_CLASS(oc);
+
+ mc->name = "s390-ccw-virtio-2.4";
+ mc->alias = "s390-ccw-virtio";
+ mc->desc = "VirtIO-ccw based S390 machine v2.4";
+ mc->is_default = 1;
+}
+
+static const TypeInfo ccw_machine_2_4_info = {
+ .name = TYPE_S390_CCW_MACHINE "2.4",
+ .parent = TYPE_S390_CCW_MACHINE,
+ .class_init = ccw_machine_2_4_class_init,
+};
+
static void ccw_machine_register_types(void)
{
type_register_static(&ccw_machine_info);
+ type_register_static(&ccw_machine_2_4_info);
}
type_init(ccw_machine_register_types)
--
2.4.5
^ permalink raw reply related [flat|nested] 16+ messages in thread* Re: [Qemu-devel] [PULL v3 for-2.4 00/11] s390x patches for 2.4
2015-07-02 14:10 [Qemu-devel] [PULL v3 for-2.4 00/11] s390x patches for 2.4 Cornelia Huck
` (10 preceding siblings ...)
2015-07-02 14:10 ` [Qemu-devel] [PULL v3 for-2.4 11/11] s390x/migration: Introduce 2.4 machine Cornelia Huck
@ 2015-07-02 15:25 ` Peter Maydell
11 siblings, 0 replies; 16+ messages in thread
From: Peter Maydell @ 2015-07-02 15:25 UTC (permalink / raw)
To: Cornelia Huck
Cc: Christian Borntraeger, Jens Freimann, QEMU Developers,
Alexander Graf
On 2 July 2015 at 15:10, Cornelia Huck <cornelia.huck@de.ibm.com> wrote:
> Managed to grab a machine where I could do a w32 cross-build. If this
> still fails, I'm at my wits end :(
>
> The following changes since commit d2966f804d70a244f5dde395fc5d22a50ed3e74e:
>
> Merge remote-tracking branch 'remotes/vivier/tags/pull-m68k-20150629' into staging (2015-06-29 17:03:20 +0100)
>
> are available in the git repository at:
>
> git://github.com/cohuck/qemu tags/s390x-20150702-v3
>
> for you to fetch changes up to c4d3c0a2696c09a884b680d15b03325e46656a6c:
>
> s390x/migration: Introduce 2.4 machine (2015-07-02 15:35:34 +0200)
>
> ----------------------------------------------------------------
> Several s390x patches including:
> - missing virtio-1 related code for virtio-ccw
> - bugfixes in ipl device, gdb, virtio-ccw
> - bugfix in s390-ccw bios + rebuild
> - introduce versioned machines for s390-ccw-virtio
>
> ----------------------------------------------------------------
Applied, thanks (and thanks for the quick respins).
-- PMM
^ permalink raw reply [flat|nested] 16+ messages in thread