Re: [PATCH 07/12] arm64/bti: Advertise BTI in assembly objects
Mark Brown <[email protected]>
| Newsgroups | org.kernel.vger.linux-toolchains,org.infradead.lists.linux-arm-kernel,org.kernel.vger.linux-kernel,org.kernel.vger.live-patching |
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| Message-ID | <[email protected]> |
On Fri, Aug 14, 2026 at 09:45:24PM -0700, Josh Poimboeuf wrote: > On a kernel whose text exceeds the +/-128MB direct branch range, the > linker inserts veneers. With BTI enabled, the veneers' indirect branch > targets need a BTI landing pad, which not all functions have starting > with Clang 21 (and for all versions of GCC). We already have explicit note generation support in asm/assembler.h which is used in the vDSO code, it probably makes sense to replace that too. I didn't check if there's potential for the two to collide with this as is.
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