6.1-stable review patch. If anyone has any objections, please let me know.
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From: Justin Stitt justinstitt@google.com
A new warning in Clang 22 [1] complains that @clidr passed to get_clidr_el1() is an uninitialized const pointer. get_clidr_el1() doesn't really care since it casts away the const-ness anyways -- it is a false positive.
This patch isn't needed for anything past 6.1 as this code section was reworked in Commit 7af0c2534f4c ("KVM: arm64: Normalize cache configuration") which incidentally removed the aforementioned warning. Since there is no upstream equivalent, this patch just needs to be applied to 6.1.
Disable this warning for sys_regs.o instead of backporting the patches from 6.2+ that modified this code area.
Cc: stable@vger.kernel.org Fixes: 7c8c5e6a9101e ("arm64: KVM: system register handling") Link: https://github.com/llvm/llvm-project/commit/00dacf8c22f065cb52efb14cd091d441... [1] Reviewed-by: Nathan Chancellor nathan@kernel.org Signed-off-by: Justin Stitt justinstitt@google.com Reviewed-by: Tiffany Yang ynaffit@google.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- arch/arm64/kvm/Makefile | 3 +++ 1 file changed, 3 insertions(+)
--- a/arch/arm64/kvm/Makefile +++ b/arch/arm64/kvm/Makefile @@ -24,6 +24,9 @@ kvm-y += arm.o mmu.o mmio.o psci.o hyper
kvm-$(CONFIG_HW_PERF_EVENTS) += pmu-emul.o pmu.o
+# Work around a false positive Clang 22 -Wuninitialized-const-pointer warning +CFLAGS_sys_regs.o := $(call cc-disable-warning, uninitialized-const-pointer) + always-y := hyp_constants.h hyp-constants.s
define rule_gen_hyp_constants