The Supervisor Binary Interface(SBI) specification[1] now defines a
base extension that provides extendability to add future extensions
while maintaining backward compatibility with previous versions.
The new version is defined as 0.2 and older version is marked as 0.1.
This series adds following features to RISC-V Linux KVM.
1. Adds support for SBI v0.2 in KVM
2. SBI Hart state management extension (HSM) in KVM
3. Ordered booting of guest vcpus in guest Linux
This series depends on the base kvm support series[2].
Guest kernel needs to also support SBI v0.2 and HSM extension in Kernel
to boot multiple vcpus. Linux kernel supports both starting v5.7.
In absense of that, guest can only boot 1vcpu.
[1] https://github.com/riscv/riscv-sbi-doc/blob/master/riscv-sbi.adoc
[2] http://lists.infradead.org/pipermail/linux-riscv/2020-July/001028.html
Atish Patra (6):
RISC-V: Add a non-void return for sbi v02 functions
RISC-V: Mark the existing SBI v0.1 implementation as legacy
RISC-V: Reorganize SBI code by moving legacy SBI to its own file
RISC-V: Add SBI v0.2 base extension
RISC-V: Add v0.1 replacement SBI extensions defined in v02
RISC-V: Add SBI HSM extension in KVM
arch/riscv/include/asm/kvm_vcpu_sbi.h | 32 +++++
arch/riscv/include/asm/sbi.h | 17 ++-
arch/riscv/kernel/sbi.c | 32 ++---
arch/riscv/kvm/Makefile | 4 +-
arch/riscv/kvm/vcpu.c | 19 +++
arch/riscv/kvm/vcpu_sbi.c | 194 ++++++++++++--------------
arch/riscv/kvm/vcpu_sbi_base.c | 73 ++++++++++
arch/riscv/kvm/vcpu_sbi_hsm.c | 109 +++++++++++++++
arch/riscv/kvm/vcpu_sbi_legacy.c | 129 +++++++++++++++++
arch/riscv/kvm/vcpu_sbi_replace.c | 136 ++++++++++++++++++
10 files changed, 619 insertions(+), 126 deletions(-)
create mode 100644 arch/riscv/include/asm/kvm_vcpu_sbi.h
create mode 100644 arch/riscv/kvm/vcpu_sbi_base.c
create mode 100644 arch/riscv/kvm/vcpu_sbi_hsm.c
create mode 100644 arch/riscv/kvm/vcpu_sbi_legacy.c
create mode 100644 arch/riscv/kvm/vcpu_sbi_replace.c
--
2.24.0
On Mon, Aug 3, 2020 at 11:29 PM Atish Patra <[email protected]> wrote:
>
> The Supervisor Binary Interface(SBI) specification[1] now defines a
> base extension that provides extendability to add future extensions
> while maintaining backward compatibility with previous versions.
> The new version is defined as 0.2 and older version is marked as 0.1.
>
> This series adds following features to RISC-V Linux KVM.
> 1. Adds support for SBI v0.2 in KVM
> 2. SBI Hart state management extension (HSM) in KVM
> 3. Ordered booting of guest vcpus in guest Linux
>
> This series depends on the base kvm support series[2].
>
> Guest kernel needs to also support SBI v0.2 and HSM extension in Kernel
> to boot multiple vcpus. Linux kernel supports both starting v5.7.
> In absense of that, guest can only boot 1vcpu.
>
> [1] https://github.com/riscv/riscv-sbi-doc/blob/master/riscv-sbi.adoc
> [2] http://lists.infradead.org/pipermail/linux-riscv/2020-July/001028.html
>
> Atish Patra (6):
> RISC-V: Add a non-void return for sbi v02 functions
> RISC-V: Mark the existing SBI v0.1 implementation as legacy
> RISC-V: Reorganize SBI code by moving legacy SBI to its own file
> RISC-V: Add SBI v0.2 base extension
> RISC-V: Add v0.1 replacement SBI extensions defined in v02
> RISC-V: Add SBI HSM extension in KVM
>
> arch/riscv/include/asm/kvm_vcpu_sbi.h | 32 +++++
> arch/riscv/include/asm/sbi.h | 17 ++-
> arch/riscv/kernel/sbi.c | 32 ++---
> arch/riscv/kvm/Makefile | 4 +-
> arch/riscv/kvm/vcpu.c | 19 +++
> arch/riscv/kvm/vcpu_sbi.c | 194 ++++++++++++--------------
> arch/riscv/kvm/vcpu_sbi_base.c | 73 ++++++++++
> arch/riscv/kvm/vcpu_sbi_hsm.c | 109 +++++++++++++++
> arch/riscv/kvm/vcpu_sbi_legacy.c | 129 +++++++++++++++++
> arch/riscv/kvm/vcpu_sbi_replace.c | 136 ++++++++++++++++++
> 10 files changed, 619 insertions(+), 126 deletions(-)
> create mode 100644 arch/riscv/include/asm/kvm_vcpu_sbi.h
> create mode 100644 arch/riscv/kvm/vcpu_sbi_base.c
> create mode 100644 arch/riscv/kvm/vcpu_sbi_hsm.c
> create mode 100644 arch/riscv/kvm/vcpu_sbi_legacy.c
> create mode 100644 arch/riscv/kvm/vcpu_sbi_replace.c
>
> --
> 2.24.0
>
Please implement the SBI SRST extension in your series.
Also, the PATCH1 can be merged separately so I would suggest
you to send this patch separately.
Regards,
Anup
On Fri, 2020-11-27 at 13:44 +0530, Anup Patel wrote:
> On Mon, Aug 3, 2020 at 11:29 PM Atish Patra <[email protected]>
> wrote:
> >
> > The Supervisor Binary Interface(SBI) specification[1] now defines a
> > base extension that provides extendability to add future extensions
> > while maintaining backward compatibility with previous versions.
> > The new version is defined as 0.2 and older version is marked as
> > 0.1.
> >
> > This series adds following features to RISC-V Linux KVM.
> > 1. Adds support for SBI v0.2 in KVM
> > 2. SBI Hart state management extension (HSM) in KVM
> > 3. Ordered booting of guest vcpus in guest Linux
> >
> > This series depends on the base kvm support series[2].
> >
> > Guest kernel needs to also support SBI v0.2 and HSM extension in
> > Kernel
> > to boot multiple vcpus. Linux kernel supports both starting v5.7.
> > In absense of that, guest can only boot 1vcpu.
> >
> > [1]
> > https://github.com/riscv/riscv-sbi-doc/blob/master/riscv-sbi.adoc
> > [2]
> > http://lists.infradead.org/pipermail/linux-riscv/2020-July/001028.html
> >
> > Atish Patra (6):
> > RISC-V: Add a non-void return for sbi v02 functions
> > RISC-V: Mark the existing SBI v0.1 implementation as legacy
> > RISC-V: Reorganize SBI code by moving legacy SBI to its own file
> > RISC-V: Add SBI v0.2 base extension
> > RISC-V: Add v0.1 replacement SBI extensions defined in v02
> > RISC-V: Add SBI HSM extension in KVM
> >
> > arch/riscv/include/asm/kvm_vcpu_sbi.h | 32 +++++
> > arch/riscv/include/asm/sbi.h | 17 ++-
> > arch/riscv/kernel/sbi.c | 32 ++---
> > arch/riscv/kvm/Makefile | 4 +-
> > arch/riscv/kvm/vcpu.c | 19 +++
> > arch/riscv/kvm/vcpu_sbi.c | 194 ++++++++++++-----------
> > ---
> > arch/riscv/kvm/vcpu_sbi_base.c | 73 ++++++++++
> > arch/riscv/kvm/vcpu_sbi_hsm.c | 109 +++++++++++++++
> > arch/riscv/kvm/vcpu_sbi_legacy.c | 129 +++++++++++++++++
> > arch/riscv/kvm/vcpu_sbi_replace.c | 136 ++++++++++++++++++
> > 10 files changed, 619 insertions(+), 126 deletions(-)
> > create mode 100644 arch/riscv/include/asm/kvm_vcpu_sbi.h
> > create mode 100644 arch/riscv/kvm/vcpu_sbi_base.c
> > create mode 100644 arch/riscv/kvm/vcpu_sbi_hsm.c
> > create mode 100644 arch/riscv/kvm/vcpu_sbi_legacy.c
> > create mode 100644 arch/riscv/kvm/vcpu_sbi_replace.c
> >
> > --
> > 2.24.0
> >
>
> Please implement the SBI SRST extension in your series.
>
Yeah. I will update the series as per new SRST extension.
> Also, the PATCH1 can be merged separately so I would suggest
> you to send this patch separately.
>
Sure will do that.
> Regards,
> Anup
--
Regards,
Atish