From: CKI Gitlab on gitlab.com
Merge Request: https://gitlab.com/cki-project/kernel-ark/-/merge_requests/1190
NOTE: Truncated patchset due to missing public @redhat.com email
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Once that is fixed, close and reopen the merge request to
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Hi,
As part of the ongoing rebase effort, the following configuration
options need to be reviewed.
As a reminder, the ARK configuration flow involves moving unreviewed
configuration options from the pending directory to the ark directory.
In the diff below, options are removed from the pending directory and
added to the ark hierarchy. The final options that need to be ACKed
are the files that are being added to the ark hierarchy.
If the value for a file that is added should be changed, please reply
with a better option.
CONFIG_ARM64_PTR_AUTH_KERNEL:
If the compiler supports the -mbranch-protection or
-msign-return-address flag (e.g. GCC 7 or later), then this option
will cause the kernel itself to be compiled with return address
protection. In this case, and if the target hardware is known to
support pointer authentication, then CONFIG_STACKPROTECTOR can be
disabled with minimal loss of protection.
This feature works with FUNCTION_GRAPH_TRACER option only if
DYNAMIC_FTRACE_WITH_REGS is enabled.
Symbol: ARM64_PTR_AUTH_KERNEL [=y]
Type : bool
Defined at arch/arm64/Kconfig:1506
Prompt: Use pointer authentication for kernel
Depends on: ARM64_PTR_AUTH [=y] && (CC_HAS_SIGN_RETURN_ADDRESS [=y] ||
CC_HAS_BRANCH_PROT_PAC_RET [=y]) && AS_HAS_PAC [=y] && (LD_IS_LLD [=n] ||
LD_VERSION [=25000]>=23301 || CC_IS_GCC [=y] && GCC_VERSION [=200000]<90100)
&& (!CC_IS_CLANG [=n] || AS_HAS_CFI_NEGATE_RA_STATE [=y]) &&
(!FUNCTION_GRAPH_TRACER [=y] || DYNAMIC_FTRACE_WITH_REGS [=y])
Location:
-> Kernel Features
-> ARMv8.3 architectural features
-> Enable support for pointer authentication (ARM64_PTR_AUTH [=y])
---
Cc: Mark Salter <[email protected]>
Cc: Mark Langsdorf <[email protected]>
Cc: Jeremy Linton <[email protected]>
Signed-off-by: Fedora Kernel Team <[email protected]>
---
redhat/configs/common/generic/arm/aarch64/CONFIG_ARM64_PTR_AUTH_KERNEL | 1 +
redhat/configs/pending-common/generic/CONFIG_ARM64_PTR_AUTH_KERNEL | 25
----------
2 files changed, 1 insertions(+), 25 deletions(-)
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