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2c2ca3416b
linux/arch/arm64
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Mark Rutland 2c2ca3416b arm64: alternative: make alternative_has_cap_likely() VDSO compatible 
Currently alternative_has_cap_unlikely() can be used in VDSO code, but
alternative_has_cap_likely() cannot as it references alt_cb_patch_nops,
which is not available when linking the VDSO. This is unfortunate as it
would be useful to have alternative_has_cap_likely() available in VDSO
code.

The use of alt_cb_patch_nops was added in commit:

  d926079f17 ("arm64: alternatives: add shared NOP callback")

... as removing duplicate NOPs within the kernel Image saved areasonable
amount of space.

Given the VDSO code will have nowhere near as many alternative branches
as the main kernel image, this isn't much of a concern, and a few extra
nops isn't a massive problem.

Change alternative_has_cap_likely() to only use alt_cb_patch_nops for
the main kernel image, and allow duplicate NOPs in VDSO code.

Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
Acked-by: Will Deacon <will@kernel.org>
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2024-09-13 17:28:35 +02:00
..
boot arm64: dts: ti: k3-j784s4-main: Correct McASP DMAs 2024-08-06 06:39:23 -05:00
configs sound updates for 6.11-rc1 2024-07-19 12:39:34 -07:00
crypto crypto: arm64 - add missing MODULE_DESCRIPTION() macros 2024-06-21 22:04:16 +10:00
hyperv x86/hyperv: Use Hyper-V entropy to seed guest random number generator 2024-03-18 22:01:52 +00:00
include arm64: alternative: make alternative_has_cap_likely() VDSO compatible 2024-09-13 17:28:35 +02:00
kernel arm64 fixes: 2024-08-16 17:02:32 -07:00
kvm KVM: arm64: Make ICC_*SGI*_EL1 undef in the absence of a vGICv3 2024-08-22 08:08:37 +00:00
lib arm64: crypto: use CC_FLAGS_FPU for NEON CFLAGS 2024-05-19 14:36:18 -07:00
mm mm: provide mm_struct and address to huge_ptep_get() 2024-07-12 15:52:15 -07:00
net bpf, arm64: Fix trampoline for BPF_TRAMP_F_CALL_ORIG 2024-07-11 17:56:30 +02:00
tools arm64 fixes for -rc1 2024-07-26 10:39:10 -07:00
xen
Kbuild
Kconfig arm64: errata: Expand speculative SSBS workaround (again) 2024-08-01 16:11:28 +01:00
Kconfig.debug
Kconfig.platforms Updates for the interrupt subsystem: 2024-07-22 13:52:05 -07:00
Makefile arm64: allow installing compressed image by default 2024-07-26 10:07:56 -07:00