On Tue, Dec 15, 2020 at 04:25:03PM +0100, Enrico Weigelt, metux IT consult
wrote:
> On 03.12.20 00:22, Wei Liu wrote:
>
> Hi,
>
> > I don't follow. Do you mean reusing /dev/kvm but with a different set of
> > APIs underneath? I don't think that will work.
&g
Hi Linus
Please pull the following changes since commit
09162bc32c880a791c6c0668ce0745cf7958f576:
Linux 5.10-rc4 (2020-11-15 16:44:31 -0800)
are available in the Git repository at:
ssh://g...@gitolite.kernel.org/pub/scm/linux/kernel/git/hyperv/linux.git
tags/hyperv-next-signed-20201214
f
On Wed, Dec 09, 2020 at 01:17:18PM +, Wei Liu wrote:
> On Wed, Dec 02, 2020 at 05:12:43PM +0100, Vitaly Kuznetsov wrote:
> > It was noticed that 'free' information on a Hyper-V guest reports ballooned
> > out memory in 'total' and this contradicts what
On Fri, Dec 11, 2020 at 09:59:34AM -0500, Martin K. Petersen wrote:
>
> Wei,
>
> > Sorry for the last minute patch. We would very like this goes into
> > 5.10 if possible; otherwise Linux 5.10 is going to be broken on
> > Hyper-V. :-(
>
> Applied to 5.10/scsi-fixes.
Thanks Martin.
On Fri, Dec 11, 2020 at 02:14:04PM +0100, Andrea Parri (Microsoft) wrote:
> This reverts commit 3b8c72d076c42bf27284cda7b2b2b522810686f8.
>
> Dexuan reported a regression where StorVSC fails to probe a device (and
> where, consequently, the VM may fail to boot). The root-cause analysis
> led to a
On Wed, Dec 09, 2020 at 09:25:23AM +0800, Xiaohui Zhang wrote:
>
>
>
> At 2020-12-09 01:52:42, "Michael Kelley" wrote:
> >From: Xiaohui Zhang Sent: Tuesday, December 8,
> >2020 5:19 AM
> >>
> >> From: Zhang Xiaohui
> >>
> >> storvsc_queuecommand() calls memcpy() without checking
> >> the
On Wed, Dec 02, 2020 at 05:12:43PM +0100, Vitaly Kuznetsov wrote:
> It was noticed that 'free' information on a Hyper-V guest reports ballooned
> out memory in 'total' and this contradicts what other ballooning drivers
> (e.g. virtio-balloon/virtio-mem/xen balloon) do.
>
> Vitaly Kuznetsov (2):
>
On Sun, Dec 06, 2020 at 11:48:50AM +0100, Stefan Eschenbacher wrote:
> Removes an obsolete TODO in the VMBus module and fixes a misleading typo
> in the comment for the macro MAX_NUM_CHANNELS, where two digits have been
> twisted.
>
> Signed-off-by: Stefan Eschenbacher
> Co-developed-by: Max Stol
On Wed, Dec 02, 2020 at 08:51:38PM +0100, Enrico Weigelt, metux IT consult
wrote:
> On 24.11.20 18:07, Wei Liu wrote:
>
> Hi,
>
> > There will be a subsequent patch series to provide a
> > device node (/dev/mshv) such that userspace programs can create and run
On Wed, Nov 25, 2020 at 12:26:12PM +0200, Andy Shevchenko wrote:
> On Wed, Nov 25, 2020 at 1:46 AM Wei Liu wrote:
> >
> > We are about to implement an irqchip for IO-APIC when Linux runs as root
> > on Microsoft Hypervisor. At the same time we would like to reuse
> &g
On Wed, Dec 02, 2020 at 02:37:16PM +0100, Andrea Parri wrote:
> > > @@ -1072,12 +1073,19 @@ void vmbus_on_msg_dpc(unsigned long data)
> > > /* no msg */
> > > return;
> > >
> > > + /*
> > > + * The hv_message object is in memory shared with the host. The host
> > > + * coul
On Tue, Nov 24, 2020 at 06:05:27PM +, David Woodhouse wrote:
> On Tue, 2020-11-24 at 17:07 +0000, Wei Liu wrote:
> > We will soon use the same structure to handle IO-APIC interrupts as
> > well. Introduce an enum to identify the source and a data structure for
> > IO-API
On Wed, Dec 02, 2020 at 10:22:09AM +0100, Andrea Parri (Microsoft) wrote:
> vmbus_on_msg_dpc() double fetches from msgtype. The double fetch can
> lead to an out-of-bound access when accessing the channel_message_table
> array. In turn, the use of the out-of-bound entry could lead to code
> execu
On Sun, Nov 29, 2020 at 09:43:28PM -0800, Stephen Hemminger wrote:
> On Sun, 29 Nov 2020 08:51:47 -0800
> "Michael Kelley" wrote:
>
> > From: Matheus Castello Sent: Tuesday, November
> > 24, 2020 7:29 PM
> > >
> > > Checkpatch emits WARNING: quoted string split across lines.
> > > To keep the c
On 11/25/2020 1:30 AM, Michael S. Tsirkin wrote:
On Thu, Nov 05, 2020 at 06:26:33PM -0500, Si-Wei Liu wrote:
Pinned pages are not properly accounted particularly when
mapping error occurs on IOTLB update. Clean up dangling
pinned pages for the error path.
The memory usage for bookkeeping
We will need the partition ID for executing some hypercalls later.
Signed-off-by: Lillian Grassin-Drake
Co-Developed-by: Sunil Muthuswamy
Signed-off-by: Wei Liu
---
v3:
1. Make hv_get_partition_id static.
2. Change code structure a bit.
---
arch/x86/hyperv/hv_init.c | 27
Microsoft Hypervisor requires the root partition to make a few
hypercalls to setup application processors before they can be used.
Signed-off-by: Lillian Grassin-Drake
Signed-off-by: Sunil Muthuswamy
Co-Developed-by: Lillian Grassin-Drake
Co-Developed-by: Sunil Muthuswamy
Signed-off-by: Wei
We will need to identify the device we want Microsoft Hypervisor to
manipulate. Introduce the data structures for that purpose.
They will be used in a later patch.
Signed-off-by: Sunil Muthuswamy
Co-Developed-by: Sunil Muthuswamy
Signed-off-by: Wei Liu
---
include/asm-generic/hyperv-tlfs.h
We are about to implement an irqchip for IO-APIC when Linux runs as root
on Microsoft Hypervisor. At the same time we would like to reuse
existing code as much as possible.
Move mp_chip_data to io_apic.h and make a few helper functions
non-static.
No functional change.
Signed-off-by: Wei Liu
: Nuno Das Neves
Signed-off-by: Wei Liu
---
v3:
1. Add __packed to structures.
2. Drop unnecessary exports.
v2:
1. Adapt to hypervisor side changes
2. Address Vitaly's comments
---
arch/x86/hyperv/Makefile | 2 +-
arch/x86/hyperv/hv_proc.c
: Sunil Muthuswamy
Co-Developed-by: Sunil Muthuswamy
Signed-off-by: Wei Liu
---
v3: build irqdomain.o for 32bit as well
v2: This patch is simplified due to upstream changes.
---
arch/x86/hyperv/Makefile| 2 +-
arch/x86/hyperv/hv_init.c | 9 +
arch/x86/hyperv/irqdomain.c | 330
Signed-off-by: Sunil Muthuswamy
Co-Developed-by: Sunil Muthuswamy
Signed-off-by: Wei Liu
---
arch/x86/include/asm/hyperv-tlfs.h | 13 +++
include/asm-generic/hyperv-tlfs.h | 36 ++
2 files changed, 49 insertions(+)
diff --git a/arch/x86/include/asm/hyperv
We will soon use the same structure to handle IO-APIC interrupts as
well. Introduce an enum to identify the source and a data structure for
IO-APIC RTE.
While at it, update pci-hyperv.c to use the enum.
No functional change.
Signed-off-by: Wei Liu
Acked-by: Rob Herring
---
drivers/pci
hypercalls on top of the native
routines.
Signed-off-by: Sunil Muthuswamy
Co-Developed-by: Sunil Muthuswamy
Signed-off-by: Wei Liu
---
arch/x86/hyperv/hv_init.c | 13 +++
arch/x86/hyperv/irqdomain.c | 226
2 files changed, 239 insertions(+)
diff --git a
We will soon need to access fields inside the MSI address and MSI data
fields. Introduce hv_msi_address_register and hv_msi_data_register.
Fix up one user of hv_msi_entry in mshyperv.h.
No functional change expected.
Signed-off-by: Wei Liu
---
arch/x86/include/asm/mshyperv.h | 4
f-by: Sunil Muthuswamy
Signed-off-by: Nuno Das Neves
Co-Developed-by: Lillian Grassin-Drake
Co-Developed-by: Sunil Muthuswamy
Co-Developed-by: Nuno Das Neves
Signed-off-by: Wei Liu
---
v3:
1. Use HV_HYP_PAGE_SIZE.
2. Add checks to hv_suspend & co.
---
arch/x86/hyperv/hv_ini
When Linux runs as the root partition, it will need to make hypercalls
which return data from the hypervisor.
Allocate pages for storing results when Linux runs as the root
partition.
Signed-off-by: Lillian Grassin-Drake
Co-Developed-by: Lillian Grassin-Drake
Signed-off-by: Wei Liu
---
v3
The IOMMU code needs more work. We're sure for now the IRQ remapping
hooks are not applicable when Linux is the root partition.
Signed-off-by: Wei Liu
Acked-by: Joerg Roedel
Reviewed-by: Vitaly Kuznetsov
---
drivers/iommu/hyperv-iommu.c | 3 ++-
1 file changed, 2 insertions(+), 1 del
When Linux runs as the root partition, the setup required for TSC page
is different. Luckily Linux also has access to the MSR based
clocksource. We can just disable the TSC page clocksource if Linux is
the root partition.
Signed-off-by: Wei Liu
Acked-by: Daniel Lezcano
---
drivers/clocksource
This makes the name match Hyper-V TLFS.
Signed-off-by: Wei Liu
Reviewed-by: Vitaly Kuznetsov
---
include/asm-generic/hyperv-tlfs.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/include/asm-generic/hyperv-tlfs.h
b/include/asm-generic/hyperv-tlfs.h
index e73a11850055
There is no VMBus and the other infrastructures initialized in
hv_acpi_init when Linux is running as the root partition.
Signed-off-by: Wei Liu
---
v3: Return 0 instead of -ENODEV.
---
drivers/hv/vmbus_drv.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/hv/vmbus_drv.c b/drivers
For now we can use the privilege flag to check. Stash the value to be
used later.
Put in a bunch of defines for future use when we want to have more
fine-grained detection.
Signed-off-by: Wei Liu
---
v3: move hv_root_partition to mshyperv.c
---
arch/x86/include/asm/hyperv-tlfs.h | 10
2. Address Vitaly's comments.
Wei Liu (17):
asm-generic/hyperv: change HV_CPU_POWER_MANAGEMENT to
HV_CPU_MANAGEMENT
x86/hyperv: detect if Linux is the root partition
Drivers: hv: vmbus: skip VMBus initialization if Linux is root
iommu/hyperv: don't setup IRQ remapping
On Wed, Nov 18, 2020 at 03:36:47PM +0100, Andrea Parri (Microsoft) wrote:
> When channel->device_obj is non-NULL, vmbus_onoffer_rescind() could
> invoke put_device(), that will eventually release the device and free
> the channel object (cf. vmbus_device_release()). However, a pointer
> to the obj
On Wed, Nov 18, 2020 at 05:37:15PM -0800, Jakub Kicinski wrote:
> On Wed, 18 Nov 2020 16:33:10 +0100 Andrea Parri (Microsoft) wrote:
> > Lack of validation could lead to out-of-bound reads and information
> > leaks (cf. usage of nvdev->chan_table[]). Check that the number of
> > allocated sub-chan
nux is the root
> partition,
> this series depends on the RFC already posted by Wei Liu:
> https://lore.kernel.org/linux-hyperv/20201105165814.29233-1-wei@kernel.org/T/#t
>
> The first two patches provide some helpers for converting hypervisor status
> codes to linux error codes, and
On Fri, Nov 20, 2020 at 04:30:31PM -0800, Nuno Das Neves wrote:
[...]
> diff --git a/virt/mshv/mshv_main.c b/virt/mshv/mshv_main.c
> index c9445d2edb37..7ddb66d260ce 100644
> --- a/virt/mshv/mshv_main.c
> +++ b/virt/mshv/mshv_main.c
> @@ -17,6 +17,7 @@
> #include
> #include
> #include
> +#inc
On Tue, Nov 24, 2020 at 08:33:32AM +, Dexuan Cui wrote:
> Hi Wei Liu,
> Please do not pick up this patch, because actually MMIO VRAM can not work
> with fb_deferred_io.
>
No problem. Thanks for the heads-up.
Wei.
Hi Linus,
Please pull the following changes since commit
92e4dc8b05663d6539b1b8375f3b1cf7b204cfe9:
Drivers: hv: vmbus: Allow cleanup of VMBUS_CONNECT_CPU if disconnected
(2020-11-11 10:58:09 +)
are available in the Git repository at:
ssh://g...@gitolite.kernel.org/pub/scm/linux/kernel
A gentle reminder. Any chance this patch will get picked soon?
Thanks,
-Siwei
On 11/9/2020 7:28 PM, Jason Wang wrote:
On 2020/11/6 上午7:26, Si-Wei Liu wrote:
Pinned pages are not properly accounted particularly when
mapping error occurs on IOTLB update. Clean up dangling
pinned pages for the
On Wed, Nov 18, 2020 at 12:20:11AM +, Michael Kelley wrote:
> From: Dexuan Cui Sent: Tuesday, November 17, 2020 4:03
> PM
> >
> > x86 Hyper-V used to essentially always overwrite the effective cache type
> > of guest memory accesses to WB. This was problematic in cases where there
> > is a p
On Tue, Nov 17, 2020 at 09:23:08PM +0100, Enrico Weigelt, metux IT consult
wrote:
> Make it possible to opt-out from hyperv support.
>
"Hyper-V support".
Have you tested this patch? If so, how?
> Signed-off-by: Enrico Weigelt, metux IT consult
> ---
> arch/x86/Kconfig | 7 +++
On Sun, Nov 15, 2020 at 04:57:28PM -0300, Matheus Castello wrote:
> This series fixes some warnings edmited by the checkpatch in the file
> vmbus_drv.c. I thought it would be good to split each fix into a commit to
> help with the review.
>
> Matheus Castello (6):
> drivers: hv: Fix hyperv_recor
On Mon, Nov 09, 2020 at 11:03:59AM +0100, Andrea Parri (Microsoft) wrote:
> Currently, VMbus drivers use pointers into guest memory as request IDs
> for interactions with Hyper-V. To be more robust in the face of errors
> or malicious behavior from a compromised Hyper-V, avoid exposing
> guest memo
Hi Linus,
Please pull the following changes since commit
dbf563eee0b8cc056744514d91c5ffc2fa6c0982:
x86/hyperv: Clarify comment on x2apic mode (2020-10-26 16:28:06 +)
are available in the Git repository at:
ssh://g...@gitolite.kernel.org/pub/scm/linux/kernel/git/hyperv/linux.git
tags/h
On Mon, Nov 16, 2020 at 11:21:48AM +, Wei Liu wrote:
> On Sun, Nov 15, 2020 at 04:57:33PM -0300, Matheus Castello wrote:
> > Fixed checkpatch warning: Possible unnecessary 'out of memory' message
> > checkpatch(OOM_MESSAGE)
> >
> > Signed-off-by: Math
On Fri, Nov 13, 2020 at 05:13:44PM +0100, Vitaly Kuznetsov wrote:
> Wei Liu writes:
>
> > On Thu, Nov 12, 2020 at 04:57:46PM +0100, Vitaly Kuznetsov wrote:
> >> Wei Liu writes:
> > [...]
> >> > diff --git a/arch/x86/include/asm/mshyperv.h
> >>
On Sun, Nov 15, 2020 at 04:57:33PM -0300, Matheus Castello wrote:
> Fixed checkpatch warning: Possible unnecessary 'out of memory' message
> checkpatch(OOM_MESSAGE)
>
> Signed-off-by: Matheus Castello
> ---
> drivers/hv/vmbus_drv.c | 4 +---
> 1 file changed, 1 insertion(+), 3 deletions(-)
>
>
On Fri, Nov 13, 2020 at 10:39:33PM +0100, Andrea Parri wrote:
> On Fri, Nov 13, 2020 at 06:54:24PM +0000, Wei Liu wrote:
> > On Fri, Nov 13, 2020 at 11:33:27AM +0000, Wei Liu wrote:
> > > On Mon, Nov 09, 2020 at 11:04:01AM +0100, Andrea Parri (Microsoft) wrote:
> >
On Fri, Nov 13, 2020 at 11:33:27AM +, Wei Liu wrote:
> On Mon, Nov 09, 2020 at 11:04:01AM +0100, Andrea Parri (Microsoft) wrote:
> > From: Andres Beltran
> >
> > Currently, pointers to guest memory are passed to Hyper-V as
> > transaction IDs in storvsc. In the
On Fri, Nov 13, 2020 at 03:33:33PM +, Wei Liu wrote:
> On Thu, Nov 12, 2020 at 04:51:09PM +0100, Vitaly Kuznetsov wrote:
> > Wei Liu writes:
> >
> > > When Linux is running as the root partition, the hypercall page will
> > > have already been setup by Hype
On Fri, Nov 13, 2020 at 04:01:58PM +, Wei Liu wrote:
> On Thu, Nov 12, 2020 at 05:56:41PM +0100, Vitaly Kuznetsov wrote:
> [...]
> > > +static unsigned int hv_ioapic_startup_irq(struct irq_data *data)
> > > +{
> > > + u16 status;
> > > + struct I
On Thu, Nov 12, 2020 at 05:56:41PM +0100, Vitaly Kuznetsov wrote:
[...]
> > +static unsigned int hv_ioapic_startup_irq(struct irq_data *data)
> > +{
> > + u16 status;
> > + struct IO_APIC_route_entry ire;
> > + u32 vector;
> > + struct irq_cfg *cfg;
> > + int ioapic;
> > + u8 ioapic_pin
On Thu, Nov 12, 2020 at 05:44:48PM +0100, Vitaly Kuznetsov wrote:
> Wei Liu writes:
>
> > Microsoft Hypervisor requires the root partition to make a few
> > hypercalls to setup application processors before they can be used.
> >
> > Signed-off-by: Lillian Grassin-D
On Thu, Nov 12, 2020 at 04:57:46PM +0100, Vitaly Kuznetsov wrote:
> Wei Liu writes:
[...]
> > diff --git a/arch/x86/include/asm/mshyperv.h
> > b/arch/x86/include/asm/mshyperv.h
> > index 67f5d35a73d3..4e590a167160 100644
> > --- a/arch/x86/include/asm/mshyperv.h
>
On Thu, Nov 12, 2020 at 04:51:09PM +0100, Vitaly Kuznetsov wrote:
> Wei Liu writes:
>
> > When Linux is running as the root partition, the hypercall page will
> > have already been setup by Hyper-V. Copy the content over to the
> > allocated page.
> >
> > T
On Thu, Nov 12, 2020 at 04:44:39PM +0100, Vitaly Kuznetsov wrote:
[...]
> > +void __init hv_get_partition_id(void)
> > +{
> > + struct hv_get_partition_id *output_page;
> > + u16 status;
> > + unsigned long flags;
> > +
> > + local_irq_save(flags);
> > + output_page = *this_cpu_ptr(hyperv
On Thu, Nov 12, 2020 at 04:35:48PM +0100, Vitaly Kuznetsov wrote:
> Wei Liu writes:
[...]
> > @@ -209,14 +219,23 @@ static int hv_cpu_die(unsigned int cpu)
> > unsigned int new_cpu;
> > unsigned long flags;
> > void **input_arg;
> > - void *
On Thu, Nov 12, 2020 at 04:27:14PM +0100, Vitaly Kuznetsov wrote:
> Wei Liu writes:
>
> > The IOMMU code needs more work. We're sure for now the IRQ remapping
> > hooks are not applicable when Linux is the root.
>
> Super-nitpick: I would suggest we always say '
On Thu, Nov 12, 2020 at 04:24:38PM +0100, Vitaly Kuznetsov wrote:
> Wei Liu writes:
>
> > There is no VMBus and the other infrastructures initialized in
> > hv_acpi_init when Linux is running as the root partition.
> >
> > Signed-off-by: Wei Liu
> >
est IDs.
>
> Signed-off-by: Andres Beltran
> Co-developed-by: Andrea Parri (Microsoft)
> Signed-off-by: Andrea Parri (Microsoft)
> Reviewed-by: Michael Kelley
Reviewed-by: Wei Liu
rea Parri (Microsoft)
> Reviewed-by: Michael Kelley
> Acked-by: Jakub Kicinski
> Cc: "David S. Miller"
> Cc: Jakub Kicinski
> Cc: net...@vger.kernel.org
Reviewed-by: Wei Liu
rea Parri (Microsoft)
> Reviewed-by: Michael Kelley
> Cc: "James E.J. Bottomley"
> Cc: "Martin K. Petersen"
> Cc: linux-s...@vger.kernel.org
Reviewed-by: Wei Liu
On Thu, Nov 12, 2020 at 04:30:57PM +0100, Vitaly Kuznetsov wrote:
> Wei Liu writes:
>
> > Signed-off-by: Wei Liu
>
> In the missing commit message I'd like to see why we don't use 'TSC
> page' clocksource for the root partition. My guess would be tha
On Thu, Nov 12, 2020 at 04:16:30PM +0100, Vitaly Kuznetsov wrote:
[...]
> > /*
> > * Virtual processor will never share a physical core with another virtual
> > * processor, except for virtual processors that are reported as sibling
> > SMT
> > diff --git a/arch/x86/include/asm/mshyperv.h
>
On Thu, Nov 05, 2020 at 04:58:12PM +, Wei Liu wrote:
> When Linux runs as the root partition on Microsoft Hypervisor, its
> interrupts are remapped. Linux will need to explicitly map and unmap
> interrupts for hardware.
>
> Implement an MSI domain to issue the correct
On Thu, Nov 12, 2020 at 11:46:41AM +, Wei Liu wrote:
> On Thu, Nov 12, 2020 at 11:42:15AM +0000, Wei Liu wrote:
> > On Fri, Nov 06, 2020 at 03:16:07AM +0800, kernel test robot wrote:
> > > Hi Wei,
> > >
> > > I love your patch! Yet something to improve:
&g
master v5.10-rc2 next-20201105]
> [If your patch is applied to the wrong git tree, kindly drop us a note.
> And when submitting patch, we suggest to use '--base' as documented in
> https://git-scm.com/docs/git-format-patch]
>
> url:
> https://github.com/0day-ci/linux
On Thu, Nov 12, 2020 at 11:42:15AM +, Wei Liu wrote:
> On Fri, Nov 06, 2020 at 03:16:07AM +0800, kernel test robot wrote:
> > Hi Wei,
> >
> > I love your patch! Yet something to improve:
> >
> > [auto build test ERROR on tip/x86/core]
> > [also build
On Thu, Nov 12, 2020 at 12:40:53PM +0100, Daniel Lezcano wrote:
> On 12/11/2020 12:24, Wei Liu wrote:
> > On Thu, Nov 12, 2020 at 10:56:17AM +0100, Daniel Lezcano wrote:
> >> On 05/11/2020 17:58, Wei Liu wrote:
> >>> Signed-off-by: Wei Liu
>
> Acked-by: Daniel Lezcano
Thanks Daniel.
Wei.
On Fri, Nov 06, 2020 at 03:16:07AM +0800, kernel test robot wrote:
> Hi Wei,
>
> I love your patch! Yet something to improve:
>
> [auto build test ERROR on tip/x86/core]
> [also build test ERROR on asm-generic/master iommu/next tip/timers/core
> pci/next linus/master v5.10-rc2 next-20201105]
> [
On Thu, Nov 05, 2020 at 04:58:13PM +, Wei Liu wrote:
> We are about to implement an irqchip for IO-APIC when Linux runs as root
> on Microsoft Hypervisor. At the same time we would like to reuse
> existing code as much as possible.
>
> Move mp_chip_data to io_apic.h and ma
On Thu, Nov 12, 2020 at 10:56:17AM +0100, Daniel Lezcano wrote:
> On 05/11/2020 17:58, Wei Liu wrote:
> > Signed-off-by: Wei Liu
> > ---
>
> I would like to apply this patch but the changelog is too short (one line).
>
> Please add a small paragraph (no need to rese
On Tue, Nov 10, 2020 at 09:18:33PM +0100, Andrea Parri wrote:
> On Tue, Nov 10, 2020 at 07:01:18PM +, Chris Co wrote:
> > From: Chris Co
> >
> > When invoking kexec() on a Linux guest running on a Hyper-V host, the
> > kernel panics.
> >
> > RIP: 0010:cpuhp_issue_call+0x137/0x140
> >
On 11/9/2020 7:28 PM, Jason Wang wrote:
On 2020/11/6 上午7:26, Si-Wei Liu wrote:
Pinned pages are not properly accounted particularly when
mapping error occurs on IOTLB update. Clean up dangling
pinned pages for the error path.
The memory usage for bookkeeping pinned pages is reverted
to what
On 11/9/2020 2:42 PM, Michael S. Tsirkin wrote:
On Mon, Nov 09, 2020 at 01:44:03PM -0800, si-wei liu wrote:
On 11/8/2020 7:21 PM, Jason Wang wrote:
On 2020/11/6 上午6:57, si-wei liu wrote:
On 11/4/2020 7:26 PM, Jason Wang wrote:
On 2020/11/5 上午7:33, Si-Wei Liu wrote:
Pinned pages are not
On 11/8/2020 7:21 PM, Jason Wang wrote:
On 2020/11/6 上午6:57, si-wei liu wrote:
On 11/4/2020 7:26 PM, Jason Wang wrote:
On 2020/11/5 上午7:33, Si-Wei Liu wrote:
Pinned pages are not properly accounted particularly when
mapping error occurs on IOTLB update. Clean up dangling
pinned pages for
memory demand for VM with a large
amount of memory, or in the situation where host is running
short of free memory.
Fixes: 4c8cf31885f6 ("vhost: introduce vDPA-based backend")
Signed-off-by: Si-Wei Liu
---
Changes in v3:
- Turn explicit last_pfn check to a WARN_ON() (Jason)
Changes in v2:
On 11/4/2020 7:26 PM, Jason Wang wrote:
On 2020/11/5 上午7:33, Si-Wei Liu wrote:
Pinned pages are not properly accounted particularly when
mapping error occurs on IOTLB update. Clean up dangling
pinned pages for the error path.
The memory usage for bookkeeping pinned pages is reverted
to what
On 11/4/2020 7:12 PM, Jason Wang wrote:
On 2020/11/5 上午7:40, si-wei liu wrote:
On 11/3/2020 6:42 PM, Jason Wang wrote:
On 2020/10/30 下午3:45, Si-Wei Liu wrote:
Pinned pages are not properly accounted particularly when
mapping error occurs on IOTLB update. Clean up dangling
pinned pages
There is no VMBus and the other infrastructures initialized in
hv_acpi_init when Linux is running as the root partition.
Signed-off-by: Wei Liu
---
drivers/hv/vmbus_drv.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/hv/vmbus_drv.c b/drivers/hv/vmbus_drv.c
index 4fad3e6745e5
When Linux runs as the root partition, it will need to make hypercalls
which return data from the hypervisor.
Allocate pages for storing results when Linux runs as the root
partition.
Signed-off-by: Lillian Grassin-Drake
Co-Developed-by: Lillian Grassin-Drake
Signed-off-by: Wei Liu
---
v2
We are about to implement an irqchip for IO-APIC when Linux runs as root
on Microsoft Hypervisor. At the same time we would like to reuse
existing code as much as possible.
Move mp_chip_data to io_apic.h and make a few helper functions
non-static.
No functional change.
Signed-off-by: Wei Liu
hypercalls on top of the native
routines.
Signed-off-by: Sunil Muthuswamy
Co-Developed-by: Sunil Muthuswamy
Signed-off-by: Wei Liu
---
arch/x86/hyperv/hv_init.c | 13 +++
arch/x86/hyperv/irqdomain.c | 226
2 files changed, 239 insertions(+)
diff --git a
Signed-off-by: Sunil Muthuswamy
Signed-off-by: Nuno Das Neves
Co-Developed-by: Lillian Grassin-Drake
Co-Developed-by: Sunil Muthuswamy
Co-Developed-by: Nuno Das Neves
Signed-off-by: Wei Liu
---
arch/x86/hyperv/hv_init.c | 32 ++--
1 file changed, 30 insertions(+), 2
Signed-off-by: Sunil Muthuswamy
Co-Developed-by: Sunil Muthuswamy
Signed-off-by: Wei Liu
---
arch/x86/include/asm/hyperv-tlfs.h | 13 +++
include/asm-generic/hyperv-tlfs.h | 36 ++
2 files changed, 49 insertions(+)
diff --git a/arch/x86/include/asm/hyperv
: Sunil Muthuswamy
Co-Developed-by: Sunil Muthuswamy
Signed-off-by: Wei Liu
---
v2:
This patch is simplified due to upstream changes.
---
arch/x86/hyperv/Makefile| 2 +-
arch/x86/hyperv/hv_init.c | 10 +-
arch/x86/hyperv/irqdomain.c | 330
3 files
Signed-off-by: Wei Liu
---
drivers/clocksource/hyperv_timer.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/clocksource/hyperv_timer.c
b/drivers/clocksource/hyperv_timer.c
index ba04cb381cd3..269a691bd2c4 100644
--- a/drivers/clocksource/hyperv_timer.c
+++ b/drivers/clocksource
is shorter.
Comments and suggestions are welcome.
Thanks,
Wei.
Changes since v1:
1. Simplify MSI IRQ domain implementation.
2. Address Vitaly's comments.
Wei Liu (17):
asm-generic/hyperv: change HV_CPU_POWER_MANAGEMENT to
HV_CPU_MANAGEMENT
x86/hyperv: detect if Linux is the root part
Microsoft Hypervisor requires the root partition to make a few
hypercalls to setup application processors before they can be used.
Signed-off-by: Lillian Grassin-Drake
Signed-off-by: Sunil Muthuswamy
Co-Developed-by: Lillian Grassin-Drake
Co-Developed-by: Sunil Muthuswamy
Signed-off-by: Wei
: Nuno Das Neves
Signed-off-by: Wei Liu
---
v2:
1. Adapt to hypervisor side changes
2. Address Vitaly's comments
---
arch/x86/hyperv/Makefile | 2 +-
arch/x86/hyperv/hv_proc.c | 217 ++
arch/x86/include/asm/mshyperv.h | 4 +
include/asm-ge
We will need the partition ID for executing some hypercalls later.
Signed-off-by: Lillian Grassin-Drake
Co-Developed-by: Sunil Muthuswamy
Signed-off-by: Wei Liu
---
arch/x86/hyperv/hv_init.c | 26 ++
arch/x86/include/asm/mshyperv.h | 2 ++
include/asm
We will need to identify the device we want Microsoft Hypervisor to
manipulate. Introduce the data structures for that purpose.
They will be used in a later patch.
Signed-off-by: Sunil Muthuswamy
Co-Developed-by: Sunil Muthuswamy
Signed-off-by: Wei Liu
---
include/asm-generic/hyperv-tlfs.h
We will soon need to access fields inside the MSI address and MSI data
fields. Introduce hv_msi_address_register and hv_msi_data_register.
Fix up one user of hv_msi_entry in mshyperv.h.
No functional change expected.
Signed-off-by: Wei Liu
---
arch/x86/include/asm/mshyperv.h | 4
The IOMMU code needs more work. We're sure for now the IRQ remapping
hooks are not applicable when Linux is the root.
Signed-off-by: Wei Liu
Acked-by: Joerg Roedel
---
drivers/iommu/hyperv-iommu.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/iommu/h
We will soon use the same structure to handle IO-APIC interrupts as
well. Introduce an enum to identify the source and a data structure for
IO-APIC RTE.
While at it, update pci-hyperv.c to use the enum.
No functional change.
Signed-off-by: Wei Liu
Acked-by: Rob Herring
---
drivers/pci
This makes the name match Hyper-V TLFS.
Signed-off-by: Wei Liu
---
include/asm-generic/hyperv-tlfs.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/include/asm-generic/hyperv-tlfs.h
b/include/asm-generic/hyperv-tlfs.h
index e73a11850055..e6903589a82a 100644
--- a/include
For now we can use the privilege flag to check. Stash the value to be
used later.
Put in a bunch of defines for future use when we want to have more
fine-grained detection.
Signed-off-by: Wei Liu
---
arch/x86/hyperv/hv_init.c | 4
arch/x86/include/asm/hyperv-tlfs.h | 10
Hi Linus
Please pull the following changes since commit
bbf5c979011a099af5dc76498918ed7df445635b:
Linux 5.9 (2020-10-11 14:15:50 -0700)
are available in the Git repository at:
ssh://g...@gitolite.kernel.org/pub/scm/linux/kernel/git/hyperv/linux.git
tags/hyperv-fixes-signed
for you to fet
memory demand for VM with a large
amount of memory, or in the situation where host is running
short of free memory.
Fixes: 4c8cf31885f6 ("vhost: introduce vDPA-based backend")
Signed-off-by: Si-Wei Liu
---
Changes in v2:
- Drop the reversion patch
- Fix unhandled page leak towards the end of
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