[v5,7/7] KVM: PPC: Ultravisor: Add PPC_UV config option
diff mbox series

Message ID 20190709102545.9187-8-bharata@linux.ibm.com
State Superseded
Headers show
Series
  • kvmppc: HMM driver to manage pages of secure guest
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Commit Message

Bharata B Rao July 9, 2019, 10:25 a.m. UTC
From: Anshuman Khandual <khandual@linux.vnet.ibm.com>

CONFIG_PPC_UV adds support for ultravisor.

Signed-off-by: Anshuman Khandual <khandual@linux.vnet.ibm.com>
Signed-off-by: Bharata B Rao <bharata@linux.ibm.com>
Signed-off-by: Ram Pai <linuxram@us.ibm.com>
[ Update config help and commit message ]
Signed-off-by: Claudio Carvalho <cclaudio@linux.ibm.com>
---
 arch/powerpc/Kconfig | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

Comments

janani July 10, 2019, 1:24 p.m. UTC | #1
On 2019-07-09 05:25, Bharata B Rao wrote:
> From: Anshuman Khandual <khandual@linux.vnet.ibm.com>
> 
> CONFIG_PPC_UV adds support for ultravisor.
> 
> Signed-off-by: Anshuman Khandual <khandual@linux.vnet.ibm.com>
> Signed-off-by: Bharata B Rao <bharata@linux.ibm.com>
> Signed-off-by: Ram Pai <linuxram@us.ibm.com>
> [ Update config help and commit message ]
> Signed-off-by: Claudio Carvalho <cclaudio@linux.ibm.com>
  Reviewed-by: Janani Janakiraman <janani@linux.ibm.com>
> ---
>  arch/powerpc/Kconfig | 20 ++++++++++++++++++++
>  1 file changed, 20 insertions(+)
> 
> diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
> index f0e5b38d52e8..20c6c213d2be 100644
> --- a/arch/powerpc/Kconfig
> +++ b/arch/powerpc/Kconfig
> @@ -440,6 +440,26 @@ config PPC_TRANSACTIONAL_MEM
>         ---help---
>           Support user-mode Transactional Memory on POWERPC.
> 
> +config PPC_UV
> +	bool "Ultravisor support"
> +	depends on KVM_BOOK3S_HV_POSSIBLE
> +	select HMM_MIRROR
> +	select HMM
> +	select ZONE_DEVICE
> +	select MIGRATE_VMA_HELPER
> +	select DEV_PAGEMAP_OPS
> +	select DEVICE_PRIVATE
> +	select MEMORY_HOTPLUG
> +	select MEMORY_HOTREMOVE
> +	default n
> +	help
> +	  This option paravirtualizes the kernel to run in POWER platforms 
> that
> +	  supports the Protected Execution Facility (PEF). In such platforms,
> +	  the ultravisor firmware runs at a privilege level above the
> +	  hypervisor.
> +
> +	  If unsure, say "N".
> +
>  config LD_HEAD_STUB_CATCH
>  	bool "Reserve 256 bytes to cope with linker stubs in HEAD text" if 
> EXPERT
>  	depends on PPC64
Jason Gunthorpe July 10, 2019, 2:15 p.m. UTC | #2
On Wed, Jul 10, 2019 at 08:24:56AM -0500, janani wrote:
> On 2019-07-09 05:25, Bharata B Rao wrote:
> > From: Anshuman Khandual <khandual@linux.vnet.ibm.com>
> > 
> > CONFIG_PPC_UV adds support for ultravisor.
> > 
> > Signed-off-by: Anshuman Khandual <khandual@linux.vnet.ibm.com>
> > Signed-off-by: Bharata B Rao <bharata@linux.ibm.com>
> > Signed-off-by: Ram Pai <linuxram@us.ibm.com>
> > [ Update config help and commit message ]
> > Signed-off-by: Claudio Carvalho <cclaudio@linux.ibm.com>
>  Reviewed-by: Janani Janakiraman <janani@linux.ibm.com>
> >  arch/powerpc/Kconfig | 20 ++++++++++++++++++++
> >  1 file changed, 20 insertions(+)
> > 
> > diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
> > index f0e5b38d52e8..20c6c213d2be 100644
> > +++ b/arch/powerpc/Kconfig
> > @@ -440,6 +440,26 @@ config PPC_TRANSACTIONAL_MEM
> >           Support user-mode Transactional Memory on POWERPC.
> > 
> > +config PPC_UV
> > +	bool "Ultravisor support"
> > +	depends on KVM_BOOK3S_HV_POSSIBLE
> > +	select HMM_MIRROR
> > +	select HMM
> > +	select ZONE_DEVICE

These configs have also been changed lately, I didn't see any calls to
hmm_mirror in this patchset, so most likely the two HMM selects should
be dropped and all you'll need is ZONE_DEVICE..

Jason

Patch
diff mbox series

diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
index f0e5b38d52e8..20c6c213d2be 100644
--- a/arch/powerpc/Kconfig
+++ b/arch/powerpc/Kconfig
@@ -440,6 +440,26 @@  config PPC_TRANSACTIONAL_MEM
        ---help---
          Support user-mode Transactional Memory on POWERPC.
 
+config PPC_UV
+	bool "Ultravisor support"
+	depends on KVM_BOOK3S_HV_POSSIBLE
+	select HMM_MIRROR
+	select HMM
+	select ZONE_DEVICE
+	select MIGRATE_VMA_HELPER
+	select DEV_PAGEMAP_OPS
+	select DEVICE_PRIVATE
+	select MEMORY_HOTPLUG
+	select MEMORY_HOTREMOVE
+	default n
+	help
+	  This option paravirtualizes the kernel to run in POWER platforms that
+	  supports the Protected Execution Facility (PEF). In such platforms,
+	  the ultravisor firmware runs at a privilege level above the
+	  hypervisor.
+
+	  If unsure, say "N".
+
 config LD_HEAD_STUB_CATCH
 	bool "Reserve 256 bytes to cope with linker stubs in HEAD text" if EXPERT
 	depends on PPC64