| Message ID | 20241108115709.GA17107@willie-the-truck (mailing list archive) |
|---|---|
| State | New |
| Headers | show |
| Series | [GIT,PULL] arm64 fixes for -rc7 | expand |
The pull request you sent on Fri, 8 Nov 2024 11:57:11 +0000:
> git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git tags/arm64-fixes
has been merged into torvalds/linux.git:
https://git.kernel.org/torvalds/c/9ea7edac83630a9e8a05042b8750eaa10ecb6a38
Thank you!
Hi Linus, As promised, here is a (hopefully) final round of arm64 fixes for 6.12 that address some user-visible floating point register corruption. Both of the Marks have been working on this for a couple of weeks and we've ended up in a position where SVE is solid but SME still has enough pending issues that the most pragmatic solution for the release and stable backports is to disable the feature. Yes, it's a shame, but the hardware is rare as hen's teeth at the moment and we're better off getting back to a known good state before fixing it all properly. We're also improving the selftests for 6.13 to help avoid merging broken code in the future. Anyway, the good news is that we're removing a lot more code than we're adding. Cheers, Will --->8 The following changes since commit 2e8a1acea8597ff42189ea94f0a63fa58640223d: arm64: signal: Improve POR_EL0 handling to avoid uaccess failures (2024-10-29 17:59:12 +0000) are available in the Git repository at: git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git tags/arm64-fixes for you to fetch changes up to 81235ae0c846e1fb46a2c6fe9283fe2b2b24f7dc: arm64: Kconfig: Make SME depend on BROKEN for now (2024-11-07 11:20:35 +0000) ---------------------------------------------------------------- arm64 fixes for -rc7 - Fix handling of SVE traps from userspace on preemptible kernels when converting the saved floating point state into SVE state. - Remove broken support for the SMCCCv1.3 "SVE discard hint" optimisation. - Disable SME support, as the current support code suffers from numerous issues around signal delivery, ptrace access and context-switch which can lead to user-visible corruption of the register state. ---------------------------------------------------------------- Mark Brown (1): arm64/sve: Discard stale CPU state when handling SVE traps Mark Rutland (2): arm64: smccc: Remove broken support for SMCCCv1.3 SVE discard hint arm64: Kconfig: Make SME depend on BROKEN for now arch/arm64/Kconfig | 1 + arch/arm64/kernel/fpsimd.c | 1 + arch/arm64/kernel/smccc-call.S | 35 +++-------------------------------- drivers/firmware/smccc/smccc.c | 4 ---- include/linux/arm-smccc.h | 32 +++----------------------------- 5 files changed, 8 insertions(+), 65 deletions(-)