Merge 5.15.125 into android14-5.15-lts

Changes in 5.15.125
	init: Provide arch_cpu_finalize_init()
	x86/cpu: Switch to arch_cpu_finalize_init()
	ARM: cpu: Switch to arch_cpu_finalize_init()
	ia64/cpu: Switch to arch_cpu_finalize_init()
	m68k/cpu: Switch to arch_cpu_finalize_init()
	mips/cpu: Switch to arch_cpu_finalize_init()
	sh/cpu: Switch to arch_cpu_finalize_init()
	sparc/cpu: Switch to arch_cpu_finalize_init()
	um/cpu: Switch to arch_cpu_finalize_init()
	init: Remove check_bugs() leftovers
	init: Invoke arch_cpu_finalize_init() earlier
	init, x86: Move mem_encrypt_init() into arch_cpu_finalize_init()
	x86/init: Initialize signal frame size late
	x86/fpu: Remove cpuinfo argument from init functions
	x86/fpu: Mark init functions __init
	x86/fpu: Move FPU initialization into arch_cpu_finalize_init()
	x86/speculation: Add Gather Data Sampling mitigation
	x86/speculation: Add force option to GDS mitigation
	x86/speculation: Add Kconfig option for GDS
	KVM: Add GDS_NO support to KVM
	x86/xen: Fix secondary processors' FPU initialization
	x86/mm: fix poking_init() for Xen PV guests
	x86/mm: Use mm_alloc() in poking_init()
	mm: Move mm_cachep initialization to mm_init()
	x86/mm: Initialize text poking earlier
	Documentation/x86: Fix backwards on/off logic about YMM support
	x86/bugs: Increase the x86 bugs vector size to two u32s
	x86/cpu, kvm: Add support for CPUID_80000021_EAX
	x86/srso: Add a Speculative RAS Overflow mitigation
	x86/srso: Add IBPB_BRTYPE support
	x86/srso: Add SRSO_NO support
	x86/srso: Add IBPB
	x86/srso: Add IBPB on VMEXIT
	x86/srso: Fix return thunks in generated code
	x86/srso: Tie SBPB bit setting to microcode patch detection
	xen/netback: Fix buffer overrun triggered by unusual packet
	x86: fix backwards merge of GDS/SRSO bit
	Linux 5.15.125

Change-Id: If243c12e0b780a2fe31d6f15980a26b632c3b28f
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>