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| author | Andrew Donnellan <ajd@linux.ibm.com> | 2019-05-09 15:11:19 +1000 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2019-08-05 18:53:04 +1000 |
| commit | 8b856a0942a1b4d832966985fcdf1a455eb6ab8c (patch) | |
| tree | b676f13fe68a72a3210e11bb418f72b3fc1783e9 /arch/powerpc/configs | |
| parent | 8c98db8d5851db45c50024a29c3dd1779dc4da0b (diff) | |
| download | lwn-8b856a0942a1b4d832966985fcdf1a455eb6ab8c.tar.gz lwn-8b856a0942a1b4d832966985fcdf1a455eb6ab8c.zip | |
powerpc/configs: Disable SCOM_DEBUGFS in powernv_defconfig
SCOM_DEBUGFS is really not needed for anything other than low-level
hardware debugging.
mpe: It also introduces a large and poorly documented/understood
attack surface. Although the interface is only available to root, the
kernel still aspires to restrict root to accessing hardware through
well defined interfaces, which this is not.
opal-prd uses its own interface (/dev/prd) for SCOM access, so it
doesn't need SCOM_DEBUGFS.
At some point in the future we'll introduce a debug config fragment
where this can go instead.
Signed-off-by: Andrew Donnellan <ajd@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20190509051119.7694-5-ajd@linux.ibm.com
Diffstat (limited to 'arch/powerpc/configs')
| -rw-r--r-- | arch/powerpc/configs/powernv_defconfig | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/powerpc/configs/powernv_defconfig b/arch/powerpc/configs/powernv_defconfig index 34219d555e8a..6658cceb928c 100644 --- a/arch/powerpc/configs/powernv_defconfig +++ b/arch/powerpc/configs/powernv_defconfig @@ -38,7 +38,7 @@ CONFIG_MODULE_UNLOAD=y CONFIG_MODVERSIONS=y CONFIG_MODULE_SRCVERSION_ALL=y CONFIG_PARTITION_ADVANCED=y -CONFIG_SCOM_DEBUGFS=y +# CONFIG_SCOM_DEBUGFS is not set CONFIG_OPAL_PRD=y CONFIG_PPC_MEMTRACE=y # CONFIG_PPC_PSERIES is not set |