Re: [Xen-devel] [PATCH v2 2/2] x86, arm, platform, xen, kconfig: add xen defconfig helper
On Wed, Jan 14, 2015 at 11:29:41AM +, Stefano Stabellini wrote: On Tue, 13 Jan 2015, Luis R. Rodriguez wrote: On Mon, Dec 15, 2014 at 02:58:26PM +, Stefano Stabellini wrote: On Tue, 9 Dec 2014, Luis R. Rodriguez wrote: From: Luis R. Rodriguez mcg...@suse.com This lets you build a kernel which can support xen dom0 or xen guests by just using: make xenconfig on both x86 and arm64 kernels. This also splits out the options which are available currently to be built with x86 and 'make ARCH=arm64' under a shared config. Technically xen supports a dom0 kernel and also a guest kernel configuration but upon review with the xen team since we don't have many dom0 options its best to just combine these two into one. Cc: Josh Triplett j...@joshtriplett.org Cc: Borislav Petkov b...@suse.de Cc: Pekka Enberg penb...@kernel.org Cc: David Rientjes rient...@google.com Cc: Michal Marek mma...@suse.cz Cc: Randy Dunlap rdun...@infradead.org Cc: penb...@kernel.org Cc: levinsasha...@gmail.com Cc: mtosa...@redhat.com Cc: fengguang...@intel.com Cc: David Vrabel david.vra...@citrix.com Cc: Ian Campbell ian.campb...@citrix.com Cc: Konrad Rzeszutek Wilk konrad.w...@oracle.com Cc: xen-de...@lists.xenproject.org Reviewed-by: Josh Triplett j...@joshtriplett.org Signed-off-by: Luis R. Rodriguez mcg...@suse.com --- arch/x86/configs/xen.config | 7 +++ kernel/configs/xen.config | 30 ++ scripts/kconfig/Makefile| 5 + 3 files changed, 42 insertions(+) create mode 100644 arch/x86/configs/xen.config create mode 100644 kernel/configs/xen.config diff --git a/arch/x86/configs/xen.config b/arch/x86/configs/xen.config new file mode 100644 index 000..92b8587f --- /dev/null +++ b/arch/x86/configs/xen.config @@ -0,0 +1,7 @@ +# x86 xen specific config options +CONFIG_XEN_PVHVM=y +CONFIG_XEN_MAX_DOMAIN_MEMORY=500 +CONFIG_XEN_SAVE_RESTORE=y +# CONFIG_XEN_DEBUG_FS is not set +CONFIG_XEN_PVH=y +CONFIG_XEN_MCE_LOG=y diff --git a/kernel/configs/xen.config b/kernel/configs/xen.config new file mode 100644 index 000..d2ec010 --- /dev/null +++ b/kernel/configs/xen.config @@ -0,0 +1,30 @@ +# generic config +CONFIG_XEN=y +CONFIG_XEN_DOM0=y +CONFIG_PCI_XEN=y This shouldn't be here If PCI is not supported on the arch this won't be selected as kconfig would not allow for it, what would be the issue of keeping it here? It looks wrong to me to have an arch specific option here. Moreover many ARM boards don't even have PCI, so it looks even worse. CONFIG_PCI_XEN is certainly not a generic config option for Xen. OK fair enough. What xen instances would we not want to have this enabled for and can we instead manage that through Kconfig magic by negating PCI_XEN for it? Everything can be fixed via Kconfig magic, the point of this exercise is to try to avoid it. Are there any cases on x86 where you don't actually want CONFIG_PCI_XEN? Not that I can think of. If not, then why don't just enable it automatically and silently if CONFIG_PCI is selected? If we did that, we could avoid specifying it here. CONFIG_PCI_XEN already depends depends on PCI XEN so I think its safe to just put it in blindly for x86. In any case, given that CONFIG_PCI_XEN is only defined on x86, I think it should be in arch/x86/configs/xen.config. OK! Will respin. Luis ___ Xen-devel mailing list Xen-devel@lists.xen.org http://lists.xen.org/xen-devel
Re: [Xen-devel] [PATCH v2 2/2] x86, arm, platform, xen, kconfig: add xen defconfig helper
On Tue, 13 Jan 2015, Luis R. Rodriguez wrote: On Mon, Dec 15, 2014 at 02:58:26PM +, Stefano Stabellini wrote: On Tue, 9 Dec 2014, Luis R. Rodriguez wrote: From: Luis R. Rodriguez mcg...@suse.com This lets you build a kernel which can support xen dom0 or xen guests by just using: make xenconfig on both x86 and arm64 kernels. This also splits out the options which are available currently to be built with x86 and 'make ARCH=arm64' under a shared config. Technically xen supports a dom0 kernel and also a guest kernel configuration but upon review with the xen team since we don't have many dom0 options its best to just combine these two into one. Cc: Josh Triplett j...@joshtriplett.org Cc: Borislav Petkov b...@suse.de Cc: Pekka Enberg penb...@kernel.org Cc: David Rientjes rient...@google.com Cc: Michal Marek mma...@suse.cz Cc: Randy Dunlap rdun...@infradead.org Cc: penb...@kernel.org Cc: levinsasha...@gmail.com Cc: mtosa...@redhat.com Cc: fengguang...@intel.com Cc: David Vrabel david.vra...@citrix.com Cc: Ian Campbell ian.campb...@citrix.com Cc: Konrad Rzeszutek Wilk konrad.w...@oracle.com Cc: xen-de...@lists.xenproject.org Reviewed-by: Josh Triplett j...@joshtriplett.org Signed-off-by: Luis R. Rodriguez mcg...@suse.com --- arch/x86/configs/xen.config | 7 +++ kernel/configs/xen.config | 30 ++ scripts/kconfig/Makefile| 5 + 3 files changed, 42 insertions(+) create mode 100644 arch/x86/configs/xen.config create mode 100644 kernel/configs/xen.config diff --git a/arch/x86/configs/xen.config b/arch/x86/configs/xen.config new file mode 100644 index 000..92b8587f --- /dev/null +++ b/arch/x86/configs/xen.config @@ -0,0 +1,7 @@ +# x86 xen specific config options +CONFIG_XEN_PVHVM=y +CONFIG_XEN_MAX_DOMAIN_MEMORY=500 +CONFIG_XEN_SAVE_RESTORE=y +# CONFIG_XEN_DEBUG_FS is not set +CONFIG_XEN_PVH=y +CONFIG_XEN_MCE_LOG=y diff --git a/kernel/configs/xen.config b/kernel/configs/xen.config new file mode 100644 index 000..d2ec010 --- /dev/null +++ b/kernel/configs/xen.config @@ -0,0 +1,30 @@ +# generic config +CONFIG_XEN=y +CONFIG_XEN_DOM0=y +CONFIG_PCI_XEN=y This shouldn't be here If PCI is not supported on the arch this won't be selected as kconfig would not allow for it, what would be the issue of keeping it here? It looks wrong to me to have an arch specific option here. Moreover many ARM boards don't even have PCI, so it looks even worse. CONFIG_PCI_XEN is certainly not a generic config option for Xen. What xen instances would we not want to have this enabled for and can we instead manage that through Kconfig magic by negating PCI_XEN for it? Everything can be fixed via Kconfig magic, the point of this exercise is to try to avoid it. Are there any cases on x86 where you don't actually want CONFIG_PCI_XEN? If not, then why don't just enable it automatically and silently if CONFIG_PCI is selected? If we did that, we could avoid specifying it here. In any case, given that CONFIG_PCI_XEN is only defined on x86, I think it should be in arch/x86/configs/xen.config. ___ Xen-devel mailing list Xen-devel@lists.xen.org http://lists.xen.org/xen-devel
Re: [Xen-devel] [PATCH v2 2/2] x86, arm, platform, xen, kconfig: add xen defconfig helper
On Mon, Dec 15, 2014 at 02:58:26PM +, Stefano Stabellini wrote: On Tue, 9 Dec 2014, Luis R. Rodriguez wrote: From: Luis R. Rodriguez mcg...@suse.com This lets you build a kernel which can support xen dom0 or xen guests by just using: make xenconfig on both x86 and arm64 kernels. This also splits out the options which are available currently to be built with x86 and 'make ARCH=arm64' under a shared config. Technically xen supports a dom0 kernel and also a guest kernel configuration but upon review with the xen team since we don't have many dom0 options its best to just combine these two into one. Cc: Josh Triplett j...@joshtriplett.org Cc: Borislav Petkov b...@suse.de Cc: Pekka Enberg penb...@kernel.org Cc: David Rientjes rient...@google.com Cc: Michal Marek mma...@suse.cz Cc: Randy Dunlap rdun...@infradead.org Cc: penb...@kernel.org Cc: levinsasha...@gmail.com Cc: mtosa...@redhat.com Cc: fengguang...@intel.com Cc: David Vrabel david.vra...@citrix.com Cc: Ian Campbell ian.campb...@citrix.com Cc: Konrad Rzeszutek Wilk konrad.w...@oracle.com Cc: xen-de...@lists.xenproject.org Reviewed-by: Josh Triplett j...@joshtriplett.org Signed-off-by: Luis R. Rodriguez mcg...@suse.com --- arch/x86/configs/xen.config | 7 +++ kernel/configs/xen.config | 30 ++ scripts/kconfig/Makefile| 5 + 3 files changed, 42 insertions(+) create mode 100644 arch/x86/configs/xen.config create mode 100644 kernel/configs/xen.config diff --git a/arch/x86/configs/xen.config b/arch/x86/configs/xen.config new file mode 100644 index 000..92b8587f --- /dev/null +++ b/arch/x86/configs/xen.config @@ -0,0 +1,7 @@ +# x86 xen specific config options +CONFIG_XEN_PVHVM=y +CONFIG_XEN_MAX_DOMAIN_MEMORY=500 +CONFIG_XEN_SAVE_RESTORE=y +# CONFIG_XEN_DEBUG_FS is not set +CONFIG_XEN_PVH=y +CONFIG_XEN_MCE_LOG=y diff --git a/kernel/configs/xen.config b/kernel/configs/xen.config new file mode 100644 index 000..d2ec010 --- /dev/null +++ b/kernel/configs/xen.config @@ -0,0 +1,30 @@ +# generic config +CONFIG_XEN=y +CONFIG_XEN_DOM0=y +CONFIG_PCI_XEN=y This shouldn't be here If PCI is not supported on the arch this won't be selected as kconfig would not allow for it, what would be the issue of keeping it here? What xen instances would we not want to have this enabled for and can we instead manage that through Kconfig magic by negating PCI_XEN for it? +CONFIG_XEN_PCIDEV_FRONTEND=m +CONFIG_XEN_BLKDEV_FRONTEND=m +CONFIG_XEN_BLKDEV_BACKEND=m +CONFIG_XEN_NETDEV_FRONTEND=m +CONFIG_XEN_NETDEV_BACKEND=m +CONFIG_INPUT_XEN_KBDDEV_FRONTEND=y +CONFIG_HVC_XEN=y +CONFIG_HVC_XEN_FRONTEND=y +CONFIG_TCG_XEN=m neither should this OK! +CONFIG_XEN_WDT=m +CONFIG_XEN_FBDEV_FRONTEND=y +CONFIG_XEN_BALLOON=y +CONFIG_XEN_BALLOON_MEMORY_HOTPLUG=y +CONFIG_XEN_SCRUB_PAGES=y +CONFIG_XEN_DEV_EVTCHN=m +CONFIG_XEN_BACKEND=y +CONFIG_XENFS=m +CONFIG_XEN_COMPAT_XENFS=y +CONFIG_XEN_SYS_HYPERVISOR=y +CONFIG_XEN_XENBUS_FRONTEND=y +CONFIG_XEN_GNTDEV=m +CONFIG_XEN_GRANT_DEV_ALLOC=m +CONFIG_SWIOTLB_XEN=y +CONFIG_XEN_PCIDEV_BACKEND=m +CONFIG_XEN_PRIVCMD=m +CONFIG_XEN_ACPI_PROCESSOR=m and this OK! Luis ___ Xen-devel mailing list Xen-devel@lists.xen.org http://lists.xen.org/xen-devel
Re: [Xen-devel] [PATCH v2 2/2] x86, arm, platform, xen, kconfig: add xen defconfig helper
Hello Luis, On 13/01/15 19:03, Luis R. Rodriguez wrote: diff --git a/kernel/configs/xen.config b/kernel/configs/xen.config new file mode 100644 index 000..d2ec010 --- /dev/null +++ b/kernel/configs/xen.config @@ -0,0 +1,30 @@ +# generic config +CONFIG_XEN=y +CONFIG_XEN_DOM0=y +CONFIG_PCI_XEN=y +CONFIG_XEN_PCIDEV_FRONTEND=m +CONFIG_XEN_BLKDEV_FRONTEND=m +CONFIG_XEN_BLKDEV_BACKEND=m +CONFIG_XEN_NETDEV_FRONTEND=m +CONFIG_XEN_NETDEV_BACKEND=m +CONFIG_INPUT_XEN_KBDDEV_FRONTEND=y +CONFIG_HVC_XEN=y +CONFIG_HVC_XEN_FRONTEND=y +CONFIG_TCG_XEN=m +CONFIG_XEN_WDT=m +CONFIG_XEN_FBDEV_FRONTEND=y +CONFIG_XEN_BALLOON=y +CONFIG_XEN_BALLOON_MEMORY_HOTPLUG=y +CONFIG_XEN_SCRUB_PAGES=y +CONFIG_XEN_DEV_EVTCHN=m +CONFIG_XEN_BACKEND=y +CONFIG_XENFS=m +CONFIG_XEN_COMPAT_XENFS=y +CONFIG_XEN_SYS_HYPERVISOR=y +CONFIG_XEN_XENBUS_FRONTEND=y +CONFIG_XEN_GNTDEV=m +CONFIG_XEN_GRANT_DEV_ALLOC=m +CONFIG_SWIOTLB_XEN=y +CONFIG_XEN_PCIDEV_BACKEND=m +CONFIG_XEN_PRIVCMD=m +CONFIG_XEN_ACPI_PROCESSOR=m The common fragment config looks good for both ARM32 and ARM64: Acked-by: Julien Grall julien.gr...@linaro.org Can someone apply this? Who should this go through? Stefano had some comments on this patch. See: http://lists.xenproject.org/archives/html/xen-devel/2014-12/msg01531.html Regards, -- Julien Grall ___ Xen-devel mailing list Xen-devel@lists.xen.org http://lists.xen.org/xen-devel
Re: [Xen-devel] [PATCH v2 2/2] x86, arm, platform, xen, kconfig: add xen defconfig helper
On Tue, Jan 13, 2015 at 11:13 AM, Julien Grall julien.gr...@linaro.org wrote: Stefano had some comments on this patch. See: http://lists.xenproject.org/archives/html/xen-devel/2014-12/msg01531.html I see now sorry about that, will address and respin. Luis ___ Xen-devel mailing list Xen-devel@lists.xen.org http://lists.xen.org/xen-devel
[Xen-devel] [PATCH v2 2/2] x86, arm, platform, xen, kconfig: add xen defconfig helper
From: Luis R. Rodriguez mcg...@suse.com This lets you build a kernel which can support xen dom0 or xen guests by just using: make xenconfig on both x86 and arm64 kernels. This also splits out the options which are available currently to be built with x86 and 'make ARCH=arm64' under a shared config. Technically xen supports a dom0 kernel and also a guest kernel configuration but upon review with the xen team since we don't have many dom0 options its best to just combine these two into one. Cc: Josh Triplett j...@joshtriplett.org Cc: Borislav Petkov b...@suse.de Cc: Pekka Enberg penb...@kernel.org Cc: David Rientjes rient...@google.com Cc: Michal Marek mma...@suse.cz Cc: Randy Dunlap rdun...@infradead.org Cc: penb...@kernel.org Cc: levinsasha...@gmail.com Cc: mtosa...@redhat.com Cc: fengguang...@intel.com Cc: David Vrabel david.vra...@citrix.com Cc: Ian Campbell ian.campb...@citrix.com Cc: Konrad Rzeszutek Wilk konrad.w...@oracle.com Cc: xen-de...@lists.xenproject.org Reviewed-by: Josh Triplett j...@joshtriplett.org Signed-off-by: Luis R. Rodriguez mcg...@suse.com --- arch/x86/configs/xen.config | 7 +++ kernel/configs/xen.config | 30 ++ scripts/kconfig/Makefile| 5 + 3 files changed, 42 insertions(+) create mode 100644 arch/x86/configs/xen.config create mode 100644 kernel/configs/xen.config diff --git a/arch/x86/configs/xen.config b/arch/x86/configs/xen.config new file mode 100644 index 000..92b8587f --- /dev/null +++ b/arch/x86/configs/xen.config @@ -0,0 +1,7 @@ +# x86 xen specific config options +CONFIG_XEN_PVHVM=y +CONFIG_XEN_MAX_DOMAIN_MEMORY=500 +CONFIG_XEN_SAVE_RESTORE=y +# CONFIG_XEN_DEBUG_FS is not set +CONFIG_XEN_PVH=y +CONFIG_XEN_MCE_LOG=y diff --git a/kernel/configs/xen.config b/kernel/configs/xen.config new file mode 100644 index 000..d2ec010 --- /dev/null +++ b/kernel/configs/xen.config @@ -0,0 +1,30 @@ +# generic config +CONFIG_XEN=y +CONFIG_XEN_DOM0=y +CONFIG_PCI_XEN=y +CONFIG_XEN_PCIDEV_FRONTEND=m +CONFIG_XEN_BLKDEV_FRONTEND=m +CONFIG_XEN_BLKDEV_BACKEND=m +CONFIG_XEN_NETDEV_FRONTEND=m +CONFIG_XEN_NETDEV_BACKEND=m +CONFIG_INPUT_XEN_KBDDEV_FRONTEND=y +CONFIG_HVC_XEN=y +CONFIG_HVC_XEN_FRONTEND=y +CONFIG_TCG_XEN=m +CONFIG_XEN_WDT=m +CONFIG_XEN_FBDEV_FRONTEND=y +CONFIG_XEN_BALLOON=y +CONFIG_XEN_BALLOON_MEMORY_HOTPLUG=y +CONFIG_XEN_SCRUB_PAGES=y +CONFIG_XEN_DEV_EVTCHN=m +CONFIG_XEN_BACKEND=y +CONFIG_XENFS=m +CONFIG_XEN_COMPAT_XENFS=y +CONFIG_XEN_SYS_HYPERVISOR=y +CONFIG_XEN_XENBUS_FRONTEND=y +CONFIG_XEN_GNTDEV=m +CONFIG_XEN_GRANT_DEV_ALLOC=m +CONFIG_SWIOTLB_XEN=y +CONFIG_XEN_PCIDEV_BACKEND=m +CONFIG_XEN_PRIVCMD=m +CONFIG_XEN_ACPI_PROCESSOR=m diff --git a/scripts/kconfig/Makefile b/scripts/kconfig/Makefile index ff612b0..f4a8f89 100644 --- a/scripts/kconfig/Makefile +++ b/scripts/kconfig/Makefile @@ -117,6 +117,10 @@ PHONY += kvmconfig kvmconfig: $(call mergeconfig,kvm_guest) +PHONY += xenconfig +xenconfig: + $(call mergeconfig,xen) + PHONY += tinyconfig tinyconfig: allnoconfig $(call mergeconfig,tiny) @@ -142,6 +146,7 @@ help: @echo ' listnewconfig - List new options' @echo ' olddefconfig- Same as silentoldconfig but sets new symbols to their default value' @echo ' kvmconfig - Enable additional options for kvm guest kernel support' + @echo ' xenconfig - Enable additional options for xen dom0 and guest kernel support' @echo ' tinyconfig - Configure the tiniest possible kernel' # lxdialog stuff -- 2.1.1 ___ Xen-devel mailing list Xen-devel@lists.xen.org http://lists.xen.org/xen-devel
