| Message ID | 20240827084549.45731-6-sebastianene@google.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | arm64: ptdump: View the second stage page-tables | expand |
On Tue, Aug 27, 2024 at 08:45:48AM +0000, Sebastian Ene wrote: > When this config is enabled, it exposes the stage-2 pagetable layout > through a debugfs file. > > Signed-off-by: Sebastian Ene <sebastianene@google.com> It doesn't feel like having a separated patch for Kconfig brings anything and I would have squashed it with the previous change. Otherwise: Reviewed-by: Vincent Donnefort <vdonnefort@google.com> > --- > arch/arm64/kvm/Kconfig | 17 +++++++++++++++++ > 1 file changed, 17 insertions(+) > > diff --git a/arch/arm64/kvm/Kconfig b/arch/arm64/kvm/Kconfig > index 8304eb342be9..ead632ad01b4 100644 > --- a/arch/arm64/kvm/Kconfig > +++ b/arch/arm64/kvm/Kconfig > @@ -66,4 +66,21 @@ config PROTECTED_NVHE_STACKTRACE > > If unsure, or not using protected nVHE (pKVM), say N. > > +config PTDUMP_STAGE2_DEBUGFS > + bool "Present the stage-2 pagetables to debugfs" > + depends on KVM > + depends on DEBUG_KERNEL > + depends on DEBUG_FS > + depends on GENERIC_PTDUMP > + select PTDUMP_CORE > + default n > + help > + Say Y here if you want to show the stage-2 kernel pagetables > + layout in a debugfs file. This information is only useful for kernel developers > + who are working in architecture specific areas of the kernel. > + It is probably not a good idea to enable this feature in a production > + kernel. > + > + If in doubt, say N. > + > endif # VIRTUALIZATION > -- > 2.46.0.295.g3b9ea8a38a-goog >
diff --git a/arch/arm64/kvm/Kconfig b/arch/arm64/kvm/Kconfig index 8304eb342be9..ead632ad01b4 100644 --- a/arch/arm64/kvm/Kconfig +++ b/arch/arm64/kvm/Kconfig @@ -66,4 +66,21 @@ config PROTECTED_NVHE_STACKTRACE If unsure, or not using protected nVHE (pKVM), say N. +config PTDUMP_STAGE2_DEBUGFS + bool "Present the stage-2 pagetables to debugfs" + depends on KVM + depends on DEBUG_KERNEL + depends on DEBUG_FS + depends on GENERIC_PTDUMP + select PTDUMP_CORE + default n + help + Say Y here if you want to show the stage-2 kernel pagetables + layout in a debugfs file. This information is only useful for kernel developers + who are working in architecture specific areas of the kernel. + It is probably not a good idea to enable this feature in a production + kernel. + + If in doubt, say N. + endif # VIRTUALIZATION
When this config is enabled, it exposes the stage-2 pagetable layout through a debugfs file. Signed-off-by: Sebastian Ene <sebastianene@google.com> --- arch/arm64/kvm/Kconfig | 17 +++++++++++++++++ 1 file changed, 17 insertions(+)