Feng Tang 517771333f x86/fpu: Set X86_FEATURE_OSXSAVE feature after enabling OSXSAVE in CR4 ... commit 2c66ca3949 upstream. 0-Day found a 34.6% regression in stress-ng's 'af-alg' test case, and bisected it to commit b81fac906a ("x86/fpu: Move FPU initialization into arch_cpu_finalize_init()"), which optimizes the FPU init order, and moves the CR4_OSXSAVE enabling into a later place: arch_cpu_finalize_init identify_boot_cpu identify_cpu generic_identify get_cpu_cap --> setup cpu capability ... fpu__init_cpu fpu__init_cpu_xstate cr4_set_bits(X86_CR4_OSXSAVE); As the FPU is not yet initialized the CPU capability setup fails to set X86_FEATURE_OSXSAVE. Many security module like 'camellia_aesni_avx_x86_64' depend on this feature and therefore fail to load, causing the regression. Cure this by setting X86_FEATURE_OSXSAVE feature right after OSXSAVE enabling. [ tglx: Moved it into the actual BSP FPU initialization code and added a comment ] Fixes: b81fac906a ("x86/fpu: Move FPU initialization into arch_cpu_finalize_init()") Reported-by: kernel test robot <oliver.sang@intel.com> Signed-off-by: Feng Tang <feng.tang@intel.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: stable@vger.kernel.org Link: https://lore.kernel.org/lkml/202307192135.203ac24e-oliver.sang@intel.com Link: https://lore.kernel.org/lkml/20230823065747.92257-1-feng.tang@intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2023-08-30 14:52:37 +02:00
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arm	ARM: dts: imx: Set default tuning step for imx6sx usdhc	2023-08-23 17:32:50 +02:00
arm64	arm64/ptrace: Ensure that the task sees ZT writes on first use	2023-08-23 17:32:53 +02:00
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loongarch	LoongArch: Fix hw_breakpoint_control() for watchpoints	2023-08-30 14:52:37 +02:00
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parisc	parisc: Fix CONFIG_TLB_PTLOCK to work with lightweight spinlock checks	2023-08-23 17:32:52 +02:00
powerpc	mm: enable page walking API to lock vmas during the walk	2023-08-30 14:52:36 +02:00
riscv	mm: enable page walking API to lock vmas during the walk	2023-08-30 14:52:36 +02:00
s390	mm: enable page walking API to lock vmas during the walk	2023-08-30 14:52:36 +02:00
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x86	x86/fpu: Set X86_FEATURE_OSXSAVE feature after enabling OSXSAVE in CR4	2023-08-30 14:52:37 +02:00
xtensa
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