[v8,8/8] KVM: PPC: Ultravisor: Add PPC_UV config option
diff mbox series

Message ID 20190910082946.7849-9-bharata@linux.ibm.com
State Superseded
Headers show
Series
  • kvmppc: Driver to manage pages of secure guest
Related show

Commit Message

Bharata B Rao Sept. 10, 2019, 8:29 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 | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

Comments

Sukadev Bhattiprolu Sept. 17, 2019, 11:37 p.m. UTC | #1
Bharata B Rao [bharata@linux.ibm.com] 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>

Except for one question in Patch 2, the patch series looks good to me.

Reviewed-by: Sukadev Bhattiprolu <sukadev@linux.ibm.com>
Bharata B Rao Sept. 18, 2019, 7:23 a.m. UTC | #2
On Tue, Sep 17, 2019 at 04:37:07PM -0700, Sukadev Bhattiprolu wrote:
> Bharata B Rao [bharata@linux.ibm.com] 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>
> 
> Except for one question in Patch 2, the patch series looks good to me.
> 
> Reviewed-by: Sukadev Bhattiprolu <sukadev@linux.ibm.com>

Thanks!

Regards,
Bharata.

Patch
diff mbox series

diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
index d8dcd8820369..044838794112 100644
--- a/arch/powerpc/Kconfig
+++ b/arch/powerpc/Kconfig
@@ -448,6 +448,23 @@  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 ZONE_DEVICE
+	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). On 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