* [PATCH v2 0/2] Xen HVM unplug changes
@ 2016-09-02 9:43 Olaf Hering
2016-09-02 9:43 ` [PATCH v2 1/2] xen_platform: unplug also SCSI disks Olaf Hering
` (2 more replies)
0 siblings, 3 replies; 9+ messages in thread
From: Olaf Hering @ 2016-09-02 9:43 UTC (permalink / raw)
To: Stefano Stabellini, Anthony Perard
Cc: Olaf Hering, Eduardo Habkost, Michael S. Tsirkin, qemu-devel,
xen-devel, Paolo Bonzini, Richard Henderson
Update unplug in Xen HVM guests to cover more cases.
Please review.
Olaf
changes in v2:
- fix issues reported by checkpatch
Olaf Hering (2):
xen_platform: unplug also SCSI disks
xen_platform: SUSE xenlinux unplug for emulated PCI
hw/i386/xen/xen_platform.c | 35 ++++++++++++++++++++++++++++++++++-
1 file changed, 34 insertions(+), 1 deletion(-)
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^ permalink raw reply [flat|nested] 9+ messages in thread* [PATCH v2 1/2] xen_platform: unplug also SCSI disks 2016-09-02 9:43 [PATCH v2 0/2] Xen HVM unplug changes Olaf Hering @ 2016-09-02 9:43 ` Olaf Hering 2016-09-02 9:43 ` [PATCH v2 2/2] xen_platform: SUSE xenlinux unplug for emulated PCI Olaf Hering [not found] ` <20160902094354.25935-2-olaf@aepfle.de> 2 siblings, 0 replies; 9+ messages in thread From: Olaf Hering @ 2016-09-02 9:43 UTC (permalink / raw) To: Stefano Stabellini, Anthony Perard Cc: Olaf Hering, Eduardo Habkost, Michael S. Tsirkin, qemu-devel, xen-devel, Paolo Bonzini, Richard Henderson Using 'vdev=sd[a-o]' will create an emulated LSI controller, which can be used by the emulated BIOS to boot from disk. If the HVM domU has also PV driver the disk may appear twice in the guest. To avoid this an unplug of the emulated hardware is needed, similar to what is done for IDE and NIC drivers already. Since the SCSI controller provides only disks the entire controller can be unplugged at once. Impact of the change for classic and pvops based guest kernels: vdev=sda:disk0 before: pvops: disk0=pv xvda + emulated sda classic: disk0=pv sda + emulated sdq after: pvops: disk0=pv xvda classic: disk0=pv sda vdev=hda:disk0, vdev=sda:disk1 before: pvops: disk0=pv xvda disk1=emulated sda classic: disk0=pv hda disk1=pv sda + emulated sdq after: pvops: disk0=pv xvda disk1=not accessible by blkfront, index hda==index sda classic: disk0=pv hda disk1=pv sda vdev=hda:disk0, vdev=sda:disk1, vdev=sdb:disk2 before: pvops: disk0=pv xvda disk1=emulated sda disk2=pv xvdb + emulated sdb classic: disk0=pv hda disk1=pv sda + emulated sdq disk2=pv sdb + emulated sdr after: pvops: disk0=pv xvda disk1=not accessible by blkfront, index hda==index sda disk2=pv xvdb classic: disk0=pv hda disk1=pv sda disk2=pv sda Signed-off-by: Olaf Hering <olaf@aepfle.de> --- hw/i386/xen/xen_platform.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/hw/i386/xen/xen_platform.c b/hw/i386/xen/xen_platform.c index aa78393..53be3c7 100644 --- a/hw/i386/xen/xen_platform.c +++ b/hw/i386/xen/xen_platform.c @@ -114,6 +114,10 @@ static void unplug_disks(PCIBus *b, PCIDevice *d, void *o) PCI_CLASS_STORAGE_IDE && strcmp(d->name, "xen-pci-passthrough") != 0) { pci_piix3_xen_ide_unplug(DEVICE(d)); + } else if (pci_get_word(d->config + PCI_CLASS_DEVICE) == + PCI_CLASS_STORAGE_SCSI + && strcmp(d->name, "xen-pci-passthrough") != 0) { + object_unparent(OBJECT(d)); } } _______________________________________________ Xen-devel mailing list Xen-devel@lists.xen.org https://lists.xen.org/xen-devel ^ permalink raw reply related [flat|nested] 9+ messages in thread
* [PATCH v2 2/2] xen_platform: SUSE xenlinux unplug for emulated PCI 2016-09-02 9:43 [PATCH v2 0/2] Xen HVM unplug changes Olaf Hering 2016-09-02 9:43 ` [PATCH v2 1/2] xen_platform: unplug also SCSI disks Olaf Hering @ 2016-09-02 9:43 ` Olaf Hering 2016-09-15 1:56 ` Stefano Stabellini ` (2 more replies) [not found] ` <20160902094354.25935-2-olaf@aepfle.de> 2 siblings, 3 replies; 9+ messages in thread From: Olaf Hering @ 2016-09-02 9:43 UTC (permalink / raw) To: Stefano Stabellini, Anthony Perard Cc: Olaf Hering, Eduardo Habkost, Michael S. Tsirkin, qemu-devel, xen-devel, Paolo Bonzini, Richard Henderson Implement SUSE specific unplug protocol for emulated PCI devices in PVonHVM guests. Its a simple 'outl(1, (ioaddr + 4));'. This protocol was implemented and used since Xen 3.0.4. It is used in all SUSE/SLES/openSUSE releases up to SLES11SP3 and openSUSE 12.3. Signed-off-by: Olaf Hering <olaf@aepfle.de> --- hw/i386/xen/xen_platform.c | 31 ++++++++++++++++++++++++++++++- 1 file changed, 30 insertions(+), 1 deletion(-) diff --git a/hw/i386/xen/xen_platform.c b/hw/i386/xen/xen_platform.c index 53be3c7..6faee4c 100644 --- a/hw/i386/xen/xen_platform.c +++ b/hw/i386/xen/xen_platform.c @@ -313,13 +313,42 @@ static void xen_platform_ioport_writeb(void *opaque, hwaddr addr, uint64_t val, unsigned int size) { PCIXenPlatformState *s = opaque; + PCIDevice *pci_dev = PCI_DEVICE(s); switch (addr) { case 0: /* Platform flags */ platform_fixed_ioport_writeb(opaque, 0, (uint32_t)val); break; + case 4: + if (val == 1) { + /* + * SUSE unplug for Xenlinux + * xen-kmp used this since xen-3.0.4, instead the official protocol + * from xen-3.3+ It did an unconditional "outl(1, (ioaddr + 4));" + * Pre VMDP 1.7 used 4 and 8 depending on how VMDP was configured. + * If VMDP was to control both disk and LAN it would use 4. + * If it controlled just disk or just LAN, it would use 8 below. + */ + blk_drain_all(); + blk_flush_all(); + pci_unplug_disks(pci_dev->bus); + pci_unplug_nics(pci_dev->bus); + } + break; case 8: - log_writeb(s, (uint32_t)val); + switch (val) { + case 1: + blk_drain_all(); + blk_flush_all(); + pci_unplug_disks(pci_dev->bus); + break; + case 2: + pci_unplug_nics(pci_dev->bus); + break; + default: + log_writeb(s, (uint32_t)val); + break; + } break; default: break; _______________________________________________ Xen-devel mailing list Xen-devel@lists.xen.org https://lists.xen.org/xen-devel ^ permalink raw reply related [flat|nested] 9+ messages in thread
* Re: [PATCH v2 2/2] xen_platform: SUSE xenlinux unplug for emulated PCI 2016-09-02 9:43 ` [PATCH v2 2/2] xen_platform: SUSE xenlinux unplug for emulated PCI Olaf Hering @ 2016-09-15 1:56 ` Stefano Stabellini 2016-09-16 7:38 ` Olaf Hering 2016-10-14 0:41 ` Stefano Stabellini [not found] ` <alpine.DEB.2.10.1610131739580.4018@sstabellini-ThinkPad-X260> 2 siblings, 1 reply; 9+ messages in thread From: Stefano Stabellini @ 2016-09-15 1:56 UTC (permalink / raw) To: Olaf Hering Cc: Stefano Stabellini, Eduardo Habkost, Michael S. Tsirkin, qemu-devel, xen-devel, Anthony Perard, Paolo Bonzini, Richard Henderson On Fri, 2 Sep 2016, Olaf Hering wrote: > Implement SUSE specific unplug protocol for emulated PCI devices > in PVonHVM guests. Its a simple 'outl(1, (ioaddr + 4));'. > This protocol was implemented and used since Xen 3.0.4. > It is used in all SUSE/SLES/openSUSE releases up to SLES11SP3 and > openSUSE 12.3. > > Signed-off-by: Olaf Hering <olaf@aepfle.de> > --- > hw/i386/xen/xen_platform.c | 31 ++++++++++++++++++++++++++++++- > 1 file changed, 30 insertions(+), 1 deletion(-) > > diff --git a/hw/i386/xen/xen_platform.c b/hw/i386/xen/xen_platform.c > index 53be3c7..6faee4c 100644 > --- a/hw/i386/xen/xen_platform.c > +++ b/hw/i386/xen/xen_platform.c > @@ -313,13 +313,42 @@ static void xen_platform_ioport_writeb(void *opaque, hwaddr addr, > uint64_t val, unsigned int size) > { > PCIXenPlatformState *s = opaque; > + PCIDevice *pci_dev = PCI_DEVICE(s); > > switch (addr) { > case 0: /* Platform flags */ > platform_fixed_ioport_writeb(opaque, 0, (uint32_t)val); > break; > + case 4: > + if (val == 1) { > + /* > + * SUSE unplug for Xenlinux > + * xen-kmp used this since xen-3.0.4, instead the official protocol > + * from xen-3.3+ It did an unconditional "outl(1, (ioaddr + 4));" > + * Pre VMDP 1.7 used 4 and 8 depending on how VMDP was configured. > + * If VMDP was to control both disk and LAN it would use 4. > + * If it controlled just disk or just LAN, it would use 8 below. > + */ > + blk_drain_all(); > + blk_flush_all(); > + pci_unplug_disks(pci_dev->bus); > + pci_unplug_nics(pci_dev->bus); > + } > + break; > case 8: > - log_writeb(s, (uint32_t)val); > + switch (val) { > + case 1: > + blk_drain_all(); > + blk_flush_all(); > + pci_unplug_disks(pci_dev->bus); > + break; > + case 2: > + pci_unplug_nics(pci_dev->bus); > + break; > + default: > + log_writeb(s, (uint32_t)val); > + break; The doc says: "If VMDP was configured to control just NIC devices it would write the value 0x1 to offset 0x8. If VMDP was configured to control just storage devices it would write the value 0x2 to offset 0x8." So 0x1 to 0x8 to unplug NICs, otherwise 0x2 to 0x8 to unplug storage. The switch above does the opposite. What am I missing? Am I misreading the document? _______________________________________________ Xen-devel mailing list Xen-devel@lists.xen.org https://lists.xen.org/xen-devel ^ permalink raw reply [flat|nested] 9+ messages in thread
* Re: [PATCH v2 2/2] xen_platform: SUSE xenlinux unplug for emulated PCI 2016-09-15 1:56 ` Stefano Stabellini @ 2016-09-16 7:38 ` Olaf Hering 0 siblings, 0 replies; 9+ messages in thread From: Olaf Hering @ 2016-09-16 7:38 UTC (permalink / raw) To: Stefano Stabellini Cc: Eduardo Habkost, Michael S. Tsirkin, qemu-devel, xen-devel, Anthony Perard, Paolo Bonzini, Richard Henderson [-- Attachment #1.1: Type: text/plain, Size: 995 bytes --] On Wed, Sep 14, Stefano Stabellini wrote: > The doc says: > > "If VMDP was configured to control just NIC devices it would write the > value 0x1 to offset 0x8. If VMDP was configured to control just storage > devices it would write the value 0x2 to offset 0x8." > > So 0x1 to 0x8 to unplug NICs, otherwise 0x2 to 0x8 to unplug storage. > The switch above does the opposite. What am I missing? Am I misreading > the document? The doc is wrong, this is what qemu-trad does: + case 8: + if (val ==1 ) { + fprintf(logfile, "Disconnect IDE hard disk...\n"); + ide_unplug_harddisks(); + fprintf(logfile, "Done.\n"); + } else if (val == 2) { + fprintf(logfile, "Disconnect netifs...\n"); + pci_unplug_netifs(); + fprintf(logfile, "Shutdown taps...\n"); + net_tap_shutdown_all(); + fprintf(logfile, "Done.\n"); + } + break; Olaf [-- Attachment #1.2: signature.asc --] [-- Type: application/pgp-signature, Size: 163 bytes --] [-- Attachment #2: Type: text/plain, Size: 127 bytes --] _______________________________________________ Xen-devel mailing list Xen-devel@lists.xen.org https://lists.xen.org/xen-devel ^ permalink raw reply [flat|nested] 9+ messages in thread
* Re: [PATCH v2 2/2] xen_platform: SUSE xenlinux unplug for emulated PCI 2016-09-02 9:43 ` [PATCH v2 2/2] xen_platform: SUSE xenlinux unplug for emulated PCI Olaf Hering 2016-09-15 1:56 ` Stefano Stabellini @ 2016-10-14 0:41 ` Stefano Stabellini [not found] ` <alpine.DEB.2.10.1610131739580.4018@sstabellini-ThinkPad-X260> 2 siblings, 0 replies; 9+ messages in thread From: Stefano Stabellini @ 2016-10-14 0:41 UTC (permalink / raw) To: Olaf Hering Cc: Stefano Stabellini, Eduardo Habkost, Michael S. Tsirkin, qemu-devel, xen-devel, Anthony Perard, Paolo Bonzini, Richard Henderson On Fri, 2 Sep 2016, Olaf Hering wrote: > Implement SUSE specific unplug protocol for emulated PCI devices > in PVonHVM guests. Its a simple 'outl(1, (ioaddr + 4));'. > This protocol was implemented and used since Xen 3.0.4. > It is used in all SUSE/SLES/openSUSE releases up to SLES11SP3 and > openSUSE 12.3. > > Signed-off-by: Olaf Hering <olaf@aepfle.de> > --- > hw/i386/xen/xen_platform.c | 31 ++++++++++++++++++++++++++++++- > 1 file changed, 30 insertions(+), 1 deletion(-) > > diff --git a/hw/i386/xen/xen_platform.c b/hw/i386/xen/xen_platform.c > index 53be3c7..6faee4c 100644 > --- a/hw/i386/xen/xen_platform.c > +++ b/hw/i386/xen/xen_platform.c > @@ -313,13 +313,42 @@ static void xen_platform_ioport_writeb(void *opaque, hwaddr addr, > uint64_t val, unsigned int size) > { > PCIXenPlatformState *s = opaque; > + PCIDevice *pci_dev = PCI_DEVICE(s); > > switch (addr) { > case 0: /* Platform flags */ > platform_fixed_ioport_writeb(opaque, 0, (uint32_t)val); > break; > + case 4: > + if (val == 1) { > + /* > + * SUSE unplug for Xenlinux > + * xen-kmp used this since xen-3.0.4, instead the official protocol > + * from xen-3.3+ It did an unconditional "outl(1, (ioaddr + 4));" > + * Pre VMDP 1.7 used 4 and 8 depending on how VMDP was configured. > + * If VMDP was to control both disk and LAN it would use 4. > + * If it controlled just disk or just LAN, it would use 8 below. > + */ > + blk_drain_all(); > + blk_flush_all(); I was about to send a pull request for this series but blk_flush_all causes a build failure: /local/qemu-upstream/hw/i386/xen/xen_platform.c: In function 'xen_platform_ioport_writeb': /local/qemu-upstream/hw/i386/xen/xen_platform.c:331:13: error: implicit declaration of function 'blk_flush_all' [-Werror=implicit-function-declaration] /local/qemu-upstream/hw/i386/xen/xen_platform.c:331:13: error: nested extern declaration of 'blk_flush_all' [-Werror=nested-externs] cc1: all warnings being treated as errors make[1]: *** [hw/i386/xen/xen_platform.o] Error 1 make[1]: *** Waiting for unfinished jobs.... make: *** [subdir-i386-softmmu] Error 2 > + pci_unplug_disks(pci_dev->bus); > + pci_unplug_nics(pci_dev->bus); > + } > + break; > case 8: > - log_writeb(s, (uint32_t)val); > + switch (val) { > + case 1: > + blk_drain_all(); > + blk_flush_all(); > + pci_unplug_disks(pci_dev->bus); > + break; > + case 2: > + pci_unplug_nics(pci_dev->bus); > + break; > + default: > + log_writeb(s, (uint32_t)val); > + break; > + } > break; > default: > break; > _______________________________________________ Xen-devel mailing list Xen-devel@lists.xen.org https://lists.xen.org/xen-devel ^ permalink raw reply [flat|nested] 9+ messages in thread
[parent not found: <alpine.DEB.2.10.1610131739580.4018@sstabellini-ThinkPad-X260>]
* Re: [PATCH v2 2/2] xen_platform: SUSE xenlinux unplug for emulated PCI [not found] ` <alpine.DEB.2.10.1610131739580.4018@sstabellini-ThinkPad-X260> @ 2016-10-20 15:54 ` Olaf Hering 0 siblings, 0 replies; 9+ messages in thread From: Olaf Hering @ 2016-10-20 15:54 UTC (permalink / raw) To: Stefano Stabellini Cc: Eduardo Habkost, Michael S. Tsirkin, qemu-devel, xen-devel, Anthony Perard, Paolo Bonzini, Richard Henderson [-- Attachment #1.1: Type: text/plain, Size: 813 bytes --] On Thu, Oct 13, Stefano Stabellini wrote: > On Fri, 2 Sep 2016, Olaf Hering wrote: > > Implement SUSE specific unplug protocol for emulated PCI devices > > in PVonHVM guests. Its a simple 'outl(1, (ioaddr + 4));'. > > This protocol was implemented and used since Xen 3.0.4. > > It is used in all SUSE/SLES/openSUSE releases up to SLES11SP3 and > > openSUSE 12.3. > I was about to send a pull request for this series but blk_flush_all > causes a build failure: > > /local/qemu-upstream/hw/i386/xen/xen_platform.c: In function 'xen_platform_ioport_writeb': > /local/qemu-upstream/hw/i386/xen/xen_platform.c:331:13: error: implicit declaration of function 'blk_flush_all' [-Werror=implicit-function-declaration] This is caused by 49137bf6845eaecad51a047fc06dd11c56118460. I will resend. Olaf [-- Attachment #1.2: signature.asc --] [-- Type: application/pgp-signature, Size: 163 bytes --] [-- Attachment #2: Type: text/plain, Size: 127 bytes --] _______________________________________________ Xen-devel mailing list Xen-devel@lists.xen.org https://lists.xen.org/xen-devel ^ permalink raw reply [flat|nested] 9+ messages in thread
[parent not found: <20160902094354.25935-2-olaf@aepfle.de>]
* Re: [PATCH v2 1/2] xen_platform: unplug also SCSI disks [not found] ` <20160902094354.25935-2-olaf@aepfle.de> @ 2016-09-15 1:50 ` Stefano Stabellini 2016-09-16 7:34 ` Olaf Hering 0 siblings, 1 reply; 9+ messages in thread From: Stefano Stabellini @ 2016-09-15 1:50 UTC (permalink / raw) To: Olaf Hering Cc: Stefano Stabellini, Eduardo Habkost, Michael S. Tsirkin, qemu-devel, xen-devel, Anthony Perard, Paolo Bonzini, Richard Henderson On Fri, 2 Sep 2016, Olaf Hering wrote: > Using 'vdev=sd[a-o]' will create an emulated LSI controller, which can > be used by the emulated BIOS to boot from disk. If the HVM domU has also > PV driver the disk may appear twice in the guest. To avoid this an > unplug of the emulated hardware is needed, similar to what is done for > IDE and NIC drivers already. > > Since the SCSI controller provides only disks the entire controller can > be unplugged at once. > > Impact of the change for classic and pvops based guest kernels: > > vdev=sda:disk0 > before: pvops: disk0=pv xvda + emulated sda > classic: disk0=pv sda + emulated sdq > after: pvops: disk0=pv xvda > classic: disk0=pv sda > > vdev=hda:disk0, vdev=sda:disk1 > before: pvops: disk0=pv xvda > disk1=emulated sda > classic: disk0=pv hda > disk1=pv sda + emulated sdq > after: pvops: disk0=pv xvda > disk1=not accessible by blkfront, index hda==index sda > classic: disk0=pv hda > disk1=pv sda > > vdev=hda:disk0, vdev=sda:disk1, vdev=sdb:disk2 > before: pvops: disk0=pv xvda > disk1=emulated sda > disk2=pv xvdb + emulated sdb > classic: disk0=pv hda > disk1=pv sda + emulated sdq > disk2=pv sdb + emulated sdr > after: pvops: disk0=pv xvda > disk1=not accessible by blkfront, index hda==index sda > disk2=pv xvdb > classic: disk0=pv hda > disk1=pv sda > disk2=pv sda > > Signed-off-by: Olaf Hering <olaf@aepfle.de> > --- > hw/i386/xen/xen_platform.c | 4 ++++ > 1 file changed, 4 insertions(+) > > diff --git a/hw/i386/xen/xen_platform.c b/hw/i386/xen/xen_platform.c > index aa78393..53be3c7 100644 > --- a/hw/i386/xen/xen_platform.c > +++ b/hw/i386/xen/xen_platform.c > @@ -114,6 +114,10 @@ static void unplug_disks(PCIBus *b, PCIDevice *d, void *o) > PCI_CLASS_STORAGE_IDE > && strcmp(d->name, "xen-pci-passthrough") != 0) { > pci_piix3_xen_ide_unplug(DEVICE(d)); > + } else if (pci_get_word(d->config + PCI_CLASS_DEVICE) == > + PCI_CLASS_STORAGE_SCSI > + && strcmp(d->name, "xen-pci-passthrough") != 0) { > + object_unparent(OBJECT(d)); > } > } Written like this, the code will unplug any Xen SCSI disks together with Xen IDE disks when the guest writes "1" to ioport `0x10`. I am sorry to be pedantic, but the recent changes introduced to docs/misc/hvm-emulated-unplug.markdown do not cover any changes in behavior to the existing ioport address (I am looking specifically at point 6). Sorry to only notice this now. _______________________________________________ Xen-devel mailing list Xen-devel@lists.xen.org https://lists.xen.org/xen-devel ^ permalink raw reply [flat|nested] 9+ messages in thread
* Re: [PATCH v2 1/2] xen_platform: unplug also SCSI disks 2016-09-15 1:50 ` [PATCH v2 1/2] xen_platform: unplug also SCSI disks Stefano Stabellini @ 2016-09-16 7:34 ` Olaf Hering 0 siblings, 0 replies; 9+ messages in thread From: Olaf Hering @ 2016-09-16 7:34 UTC (permalink / raw) To: Stefano Stabellini Cc: Eduardo Habkost, Michael S. Tsirkin, qemu-devel, xen-devel, Anthony Perard, Paolo Bonzini, Richard Henderson [-- Attachment #1.1: Type: text/plain, Size: 485 bytes --] On Wed, Sep 14, Stefano Stabellini wrote: > Written like this, the code will unplug any Xen SCSI disks together with > Xen IDE disks when the guest writes "1" to ioport `0x10`. I am sorry to > be pedantic, but the recent changes introduced to > docs/misc/hvm-emulated-unplug.markdown do not cover any changes in > behavior to the existing ioport address (I am looking specifically at > point 6). Sorry to only notice this now. I will update the docs once the code is changed. Olaf [-- Attachment #1.2: signature.asc --] [-- Type: application/pgp-signature, Size: 163 bytes --] [-- Attachment #2: Type: text/plain, Size: 127 bytes --] _______________________________________________ Xen-devel mailing list Xen-devel@lists.xen.org https://lists.xen.org/xen-devel ^ permalink raw reply [flat|nested] 9+ messages in thread
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Thread overview: 9+ messages (download: mbox.gz follow: Atom feed
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2016-09-02 9:43 [PATCH v2 0/2] Xen HVM unplug changes Olaf Hering
2016-09-02 9:43 ` [PATCH v2 1/2] xen_platform: unplug also SCSI disks Olaf Hering
2016-09-02 9:43 ` [PATCH v2 2/2] xen_platform: SUSE xenlinux unplug for emulated PCI Olaf Hering
2016-09-15 1:56 ` Stefano Stabellini
2016-09-16 7:38 ` Olaf Hering
2016-10-14 0:41 ` Stefano Stabellini
[not found] ` <alpine.DEB.2.10.1610131739580.4018@sstabellini-ThinkPad-X260>
2016-10-20 15:54 ` Olaf Hering
[not found] ` <20160902094354.25935-2-olaf@aepfle.de>
2016-09-15 1:50 ` [PATCH v2 1/2] xen_platform: unplug also SCSI disks Stefano Stabellini
2016-09-16 7:34 ` Olaf Hering
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