similar to: [PATCH RFC v1 08/18] x86/hyperv: handling hypercall page setup for root

Wei Liu <wei.liu at kernel.org> writes: > On Tue, Sep 15, 2020 at 12:32:29PM +0200, Vitaly Kuznetsov wrote: >> Wei Liu <wei.liu at kernel.org> 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. >> >> And we

Wei Liu <wei.liu at kernel.org> 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. And we can't setup a new hypercall page by writing something different to HV_X64_MSR_HYPERCALL, right? > > The suspend, resume and cleanup paths remain untouched because they

Wei Liu <wei.liu at kernel.org> writes: > We will need the partition ID for executing some hypercalls later. > > Signed-off-by: Lillian Grassin-Drake <ligrassi at microsoft.com> > Co-Developed-by: Sunil Muthuswamy <sunilmut at microsoft.com> > Signed-off-by: Wei Liu <wei.liu at kernel.org> > --- > arch/x86/hyperv/hv_init.c | 26

Wei Liu <wei.liu at kernel.org> writes: > 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 <ligrassi at microsoft.com> > Co-Developed-by: Lillian Grassin-Drake <ligrassi at

Wei Liu <wei.liu at kernel.org> writes: > They are used to deposit pages into Microsoft Hypervisor and bring up > logical and virtual processors. > > Signed-off-by: Lillian Grassin-Drake <ligrassi at microsoft.com> > Signed-off-by: Sunil Muthuswamy <sunilmut at microsoft.com> > Signed-off-by: Nuno Das Neves <nudasnev at microsoft.com> >

Wei Liu <wei.liu at kernel.org> writes: > On Tue, Sep 15, 2020 at 12:43:18PM +0000, Wei Liu wrote: >> On Tue, Sep 15, 2020 at 12:16:58PM +0200, Vitaly Kuznetsov wrote: >> > Wei Liu <wei.liu at kernel.org> writes: >> > >> > > When Linux runs as the root partition, it will need to make hypercalls >> > > which return data from the

From: Haiyang Zhang <haiyangz at microsoft.com> Convert camel cased struct fields in hv.h to lower cases Signed-off-by: Haiyang Zhang <haiyangz at microsoft.com> Signed-off-by: Hank Janssen <hjanssen at microsoft.com> --- drivers/staging/hv/hv.c | 95 +++++++++++++++++++++++--------------------- drivers/staging/hv/hv.h | 20 +++++----- drivers/staging/hv/vmbus.c |

From: Haiyang Zhang <haiyangz at microsoft.com> Convert camel cased struct fields in hv.h to lower cases Signed-off-by: Haiyang Zhang <haiyangz at microsoft.com> Signed-off-by: Hank Janssen <hjanssen at microsoft.com> --- drivers/staging/hv/hv.c | 95 +++++++++++++++++++++++--------------------- drivers/staging/hv/hv.h | 20 +++++----- drivers/staging/hv/vmbus.c |

Hyper-V TSC page clocksource is suitable for vDSO, however, the protocol defined by the hypervisor is different from VCLOCK_PVCLOCK. Implement the required support re-using pvclock_page VVAR as VCLOCK_PVCLOCK is mutually exclusive with VCLOCK_HVCLOCK at run time. Signed-off-by: Vitaly Kuznetsov <vkuznets at redhat.com> --- arch/x86/entry/vdso/vclock_gettime.c | 48

Wei Liu <wei.liu at kernel.org> 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-Drake <ligrassi at microsoft.com> > Signed-off-by: Sunil Muthuswamy <sunilmut at microsoft.com> > Co-Developed-by: Lillian Grassin-Drake <ligrassi at

Hyper-V TSC page clocksource is suitable for vDSO, however, the protocol defined by the hypervisor is different from VCLOCK_PVCLOCK. Implement the required support by adding hvclock_page VVAR. Signed-off-by: Vitaly Kuznetsov <vkuznets at redhat.com> --- arch/x86/entry/vdso/vclock_gettime.c | 36 +++++++++++++++++++++++++++++++++++ arch/x86/entry/vdso/vdso-layout.lds.S | 3 ++-

This group of patches removes all DPRINT from hv_vmbus.ko. It is divided in several patches due to size. All DPRINT calls have been removed, and where needed have been replaced with pr_XX native calls. Many debug DPRINT calls have been removed outright. The amount of clutter this driver prints has been significantly reduced. Signed-off-by: Hank Janssen <hjanssen at microsoft.com>

This group of patches removes all DPRINT from hv_vmbus.ko. It is divided in several patches due to size. All DPRINT calls have been removed, and where needed have been replaced with pr_XX native calls. Many debug DPRINT calls have been removed outright. The amount of clutter this driver prints has been significantly reduced. Signed-off-by: Hank Janssen <hjanssen at microsoft.com>

In preperation for getting rid of the osd.[ch] files; change all page allocation/free functions to use native interfaces. Signed-off-by: K. Y. Srinivasan <kys at microsoft.com> Signed-off-by: Hank Janssen <hjanssen at microsoft.com> --- drivers/staging/hv/channel.c | 12 +++++++----- drivers/staging/hv/connection.c | 13 ++++++++----- drivers/staging/hv/hv.c | 15

In preperation for getting rid of the osd.[ch] files; change all page allocation/free functions to use native interfaces. Signed-off-by: K. Y. Srinivasan <kys at microsoft.com> Signed-off-by: Hank Janssen <hjanssen at microsoft.com> --- drivers/staging/hv/channel.c | 12 +++++++----- drivers/staging/hv/connection.c | 13 ++++++++----- drivers/staging/hv/hv.c | 15

The x86_hyper pointer is only used for checking whether a virtual device is supporting the hypervisor the system is running on. Use an enum for that purpose instead and drop the x86_hyper pointer. Cc: kys at microsoft.com Cc: haiyangz at microsoft.com Cc: sthemmin at microsoft.com Cc: akataria at vmware.com Cc: pbonzini at redhat.com Cc: rkrcmar at redhat.com Cc: boris.ostrovsky at oracle.com

To use Hyper-V TSC page clocksource from vDSO we need to make tsc_pg available. Implement hv_get_tsc_page() and add CONFIG_HYPERV_TSCPAGE to make #ifdef-s simple. Signed-off-by: Vitaly Kuznetsov <vkuznets at redhat.com> --- arch/x86/hyperv/hv_init.c | 9 +++++++-- arch/x86/include/asm/mshyperv.h | 8 ++++++++ drivers/hv/Kconfig | 3 +++ 3 files changed, 18 insertions(+),

As a preparation to making Hyper-V TSC page suitable for vDSO move the TSC page reading logic to asm/mshyperv.h. While on it, do the following - Document the reading algorithm. - Simplify the code a bit. - Add explicit READ_ONCE() to not rely on 'volatile'. - Add explicit barriers to prevent re-ordering (we need to read sequence strictly before and after) - Use mul_u64_u64_shr() instead

The actual code looks fine, but the style police will not like you. { should be at start of line on functions. And #else should be at start of line, But maybe this was just more of exchange mangling the mail. -----Original Message----- From: Vitaly Kuznetsov [mailto:vkuznets at redhat.com] Sent: Thursday, February 9, 2017 6:11 AM To: x86 at kernel.org; Andy Lutomirski <luto at

The actual code looks fine, but the style police will not like you. { should be at start of line on functions. And #else should be at start of line, But maybe this was just more of exchange mangling the mail. -----Original Message----- From: Vitaly Kuznetsov [mailto:vkuznets at redhat.com] Sent: Thursday, February 9, 2017 6:11 AM To: x86 at kernel.org; Andy Lutomirski <luto at