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authorLinus Torvalds <torvalds@linux-foundation.org>2020-06-27 17:47:18 +0200
committerLinus Torvalds <torvalds@linux-foundation.org>2020-06-27 17:47:18 +0200
commit8530684fd37c151bbcf6c101ea3d0d784e221d98 (patch)
treefe97beeed9da652d1710fd5f00508aaf9e2a1e06 /arch/arm64/Kconfig
parentMerge tag 'acpi-5.8-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/raf... (diff)
parentarm64: Add KRYO{3,4}XX silver CPU cores to SSB safelist (diff)
downloadlinux-8530684fd37c151bbcf6c101ea3d0d784e221d98.tar.xz
linux-8530684fd37c151bbcf6c101ea3d0d784e221d98.zip
Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Pull arm64 fixes from Will Deacon: "The big fix here is to our vDSO sigreturn trampoline as, after a painfully long stint of debugging, it turned out that fixing some of our CFI directives in the merge window lit up a bunch of logic in libgcc which has been shown to SEGV in some cases during asynchronous pthread cancellation. It looks like we can fix this by extending the directives to restore most of the interrupted register state from the sigcontext, but it's risky and hard to test so we opted to remove the CFI directives for now and rely on the unwinder fallback path like we used to. - Fix unwinding through vDSO sigreturn trampoline - Fix build warnings by raising minimum LD version for PAC - Whitelist some Kryo Cortex-A55 derivatives for Meltdown and SSB - Fix perf register PC reporting for compat tasks - Fix 'make clean' warning for arm64 signal selftests - Fix ftrace when BTI is compiled in - Avoid building the compat vDSO using GCC plugins" * tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: arm64: Add KRYO{3,4}XX silver CPU cores to SSB safelist arm64: perf: Report the PC value in REGS_ABI_32 mode kselftest: arm64: Remove redundant clean target arm64: kpti: Add KRYO{3, 4}XX silver CPU cores to kpti safelist arm64: Don't insert a BTI instruction at inner labels arm64: vdso: Don't use gcc plugins for building vgettimeofday.c arm64: vdso: Only pass --no-eh-frame-hdr when linker supports it arm64: Depend on newer binutils when building PAC arm64: compat: Remove 32-bit sigreturn code from the vDSO arm64: compat: Always use sigpage for sigreturn trampoline arm64: compat: Allow 32-bit vdso and sigpage to co-exist arm64: vdso: Disable dwarf unwinding through the sigreturn trampoline
Diffstat (limited to 'arch/arm64/Kconfig')
-rw-r--r--arch/arm64/Kconfig4
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
index a4a094bedcb2..66dc41fd49f2 100644
--- a/arch/arm64/Kconfig
+++ b/arch/arm64/Kconfig
@@ -1518,9 +1518,9 @@ config ARM64_PTR_AUTH
default y
depends on !KVM || ARM64_VHE
depends on (CC_HAS_SIGN_RETURN_ADDRESS || CC_HAS_BRANCH_PROT_PAC_RET) && AS_HAS_PAC
- # GCC 9.1 and later inserts a .note.gnu.property section note for PAC
+ # Modern compilers insert a .note.gnu.property section note for PAC
# which is only understood by binutils starting with version 2.33.1.
- depends on !CC_IS_GCC || GCC_VERSION < 90100 || LD_VERSION >= 233010000
+ depends on LD_IS_LLD || LD_VERSION >= 233010000 || (CC_IS_GCC && GCC_VERSION < 90100)
depends on !CC_IS_CLANG || AS_HAS_CFI_NEGATE_RA_STATE
depends on (!FUNCTION_GRAPH_TRACER || DYNAMIC_FTRACE_WITH_REGS)
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