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Randy Dunlap 381a1e2748 x86/mm: Cleanup the control_va_addr_alignment() __setup handler 
[ Upstream commit 1ef64b1e89 ]

Clean up control_va_addr_alignment():

a. Make '=' required instead of optional (as documented).
b. Print a warning if an invalid option value is used.
c. Return 1 from the __setup handler when an invalid option value is
   used. This prevents the kernel from polluting init's (limited)
   environment space with the entire string.

Fixes: dfb09f9b7a ("x86, amd: Avoid cache aliasing penalties on AMD family 15h")
Reported-by: Igor Zhbanov <i.zhbanov@omprussia.ru>
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Borislav Petkov <bp@suse.de>
Link: https://lore.kernel.org/r/64644a2f-4a20-bab3-1e15-3b2cdd0defe3@omprussia.ru
Link: https://lore.kernel.org/r/20220315001045.7680-1-rdunlap@infradead.org
Signed-off-by: Sasha Levin <sashal@kernel.org>
2022-06-09 10:22:54 +02:00
..
acpi
x86: Prepare asm files for straight-line-speculation
2022-05-15 20:18:49 +02:00
apic
x86: Fix return value of __setup handlers
2022-06-09 10:22:53 +02:00
cpu
x86: Fix return value of __setup handlers
2022-06-09 10:22:53 +02:00
fpu
x86/fpu: Prevent FPU state corruption
2022-05-12 12:30:02 +02:00
kprobes
x86: Prepare inline-asm for straight-line-speculation
2022-05-15 20:18:50 +02:00
.gitignore
…
alternative.c
x86/alternative: Relax text_poke_bp() constraint
2022-05-15 20:18:50 +02:00
amd_gart_64.c
x86/amd_gart: don't set failed sg dma_address to DMA_MAPPING_ERROR
2021-08-09 17:13:06 +02:00
amd_nb.c
hwmon: (k10temp) Add support for yellow carp
2021-08-27 13:54:58 -07:00
aperture_64.c
memblock: make memblock_find_in_range method private
2021-09-03 09:58:17 -07:00
apm_32.c
…
asm-offsets_32.c
…
asm-offsets_64.c
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asm-offsets.c
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audit_64.c
…
bootflag.c
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cc_platform.c
x86/sev: Add an x86 version of cc_platform_has()
2021-11-18 19:17:21 +01:00
check.c
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cpuid.c
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crash_core_32.c
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crash_core_64.c
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crash_dump_32.c
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crash_dump_64.c
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crash.c
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devicetree.c
…
doublefault_32.c
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dumpstack_32.c
…
dumpstack_64.c
x86/mm/64: Improve stack overflow warnings
2021-11-18 19:16:10 +01:00
dumpstack.c
x86/dumpstack: use %pSb/%pBb for backtrace printing
2021-07-08 11:48:22 -07:00
e820.c
x86/boot: Fix memremap of setup_indirect structures
2022-03-16 14:23:45 +01:00
early_printk.c
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early-quirks.c
x86/gpu: Reserve stolen memory for first integrated Intel GPU
2022-01-27 11:02:51 +01:00
ebda.c
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eisa.c
…
espfix_64.c
…
ftrace_32.S
x86: Prepare asm files for straight-line-speculation
2022-05-15 20:18:49 +02:00
ftrace_64.S
x86: Prepare asm files for straight-line-speculation
2022-05-15 20:18:49 +02:00
ftrace.c
x86: Add straight-line-speculation mitigation
2022-05-15 20:18:51 +02:00
head32.c
…
head64.c
…
head_32.S
x86: Prepare asm files for straight-line-speculation
2022-05-15 20:18:49 +02:00
head_64.S
…
hpet.c
rtc: Check return value from mc146818_get_time()
2022-04-13 20:59:14 +02:00
hw_breakpoint.c
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i8237.c
…
i8253.c
…
i8259.c
x86: Avoid magic number with ELCR register accesses
2021-08-10 23:31:43 +02:00
idt.c
Merge tag 'x86-irq-2021-06-29' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2021-06-29 12:36:59 -07:00
io_delay.c
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ioport.c
…
irq_32.c
…
irq_64.c
…
irq_work.c
…
irq.c
x86/irq: Ensure PI wakeup handler is unregistered before module unload
2021-11-18 19:15:56 +01:00
irqflags.S
x86: Prepare asm files for straight-line-speculation
2022-05-15 20:18:49 +02:00
irqinit.c
…
itmt.c
…
jailhouse.c
…
jump_label.c
jump_labels: Mark __jump_label_transform() as __always_inlined to work around aggressive compiler un-inlining
2021-07-13 06:32:05 +02:00
kdebugfs.c
x86/boot: Fix memremap of setup_indirect structures
2022-03-16 14:23:45 +01:00
kexec-bzimage64.c
…
kgdb.c
…
ksysfs.c
x86/boot: Fix memremap of setup_indirect structures
2022-03-16 14:23:45 +01:00
kvm.c
x86, kvm: use correct GFP flags for preemption disabled
2022-06-06 08:43:39 +02:00
kvmclock.c
x86/kvmclock: Move this_cpu_pvti into kvmclock.h
2021-09-30 04:08:01 -04:00
ldt.c
memcg: enable accounting for ldt_struct objects
2021-09-03 09:58:13 -07:00
machine_kexec_32.c
…
machine_kexec_64.c
x86/kexec: fix memory leak of elf header buffer
2022-06-09 10:22:29 +02:00
Makefile
x86/sev: Add an x86 version of cc_platform_has()
2021-11-18 19:17:21 +01:00
mmconf-fam10h_64.c
…
module.c
x86/module: Fix the paravirt vs alternative order
2022-03-19 13:47:51 +01:00
mpparse.c
x86: Avoid magic number with ELCR register accesses
2021-08-10 23:31:43 +02:00
msr.c
…
nmi_selftest.c
…
nmi.c
…
paravirt-spinlocks.c
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paravirt.c
x86: Prepare inline-asm for straight-line-speculation
2022-05-15 20:18:50 +02:00
pci-dma.c
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pci-iommu_table.c
…
pci-swiotlb.c
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pcspeaker.c
…
perf_regs.c
…
platform-quirks.c
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pmem.c
…
probe_roms.c
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process_32.c
…
process_64.c
x86/fpu: Add PKRU storage outside of task XSAVE buffer
2021-06-23 19:37:45 +02:00
process.c
x86/iopl: Fake iopl(3) CLI/STI usage
2021-11-18 19:15:56 +01:00
process.h
…
ptrace.c
x86/ptrace: Fix xfpregs_set()'s incorrect xmm clearing
2022-03-02 11:47:47 +01:00
pvclock.c
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quirks.c
…
reboot_fixups_32.c
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reboot.c
x86/mm: Flush global TLB when switching to trampoline page-table
2022-01-27 11:04:35 +01:00
relocate_kernel_32.S
x86: Prepare asm files for straight-line-speculation
2022-05-15 20:18:49 +02:00
relocate_kernel_64.S
x86: Prepare asm files for straight-line-speculation
2022-05-15 20:18:49 +02:00
resource.c
…
rtc.c
…
setup_percpu.c
memblock: introduce saner 'memblock_free_ptr()' interface
2021-09-14 13:23:22 -07:00
setup.c
x86/boot: Fix memremap of setup_indirect structures
2022-03-16 14:23:45 +01:00
sev_verify_cbit.S
x86: Prepare asm files for straight-line-speculation
2022-05-15 20:18:49 +02:00
sev-shared.c
x86/sev: Return an error on a returned non-zero SW_EXITINFO1[31:0]
2021-10-01 11:14:41 +02:00
sev.c
x86/sev: Fix SEV-ES INS/OUTS instructions for word, dword, and qword
2021-12-08 09:04:53 +01:00
signal_compat.c
signal: Deliver SIGTRAP on perf event asynchronously if blocked
2022-06-09 10:22:48 +02:00
signal.c
Merge tag 'x86-fpu-2021-07-07' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2021-07-07 11:12:01 -07:00
smp.c
…
smpboot.c
x86/smp: Add a per-cpu view of SMT state
2021-07-28 11:42:23 +02:00
stacktrace.c
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static_call.c
x86: Add straight-line-speculation mitigation
2022-05-15 20:18:51 +02:00
step.c
ptrace: Reimplement PTRACE_KILL by always sending SIGKILL
2022-06-09 10:22:29 +02:00
sys_ia32.c
…
sys_x86_64.c
x86/mm: Cleanup the control_va_addr_alignment() __setup handler
2022-06-09 10:22:54 +02:00
tboot.c
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time.c
…
tls.c
…
tls.h
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topology.c
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trace_clock.c
…
trace.c
trace/osnoise: Fix 'no previous prototype' warnings
2021-06-28 14:12:26 -04:00
tracepoint.c
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traps.c
x86/traps: Mark do_int3() NOKPROBE_SYMBOL
2022-03-16 14:23:45 +01:00
tsc_msr.c
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tsc_sync.c
x86/tsc: Add a timer to make sure TSC_adjust is always checked
2021-12-08 09:04:56 +01:00
tsc.c
x86/tsc: Disable clocksource watchdog for TSC on qualified platorms
2021-12-08 09:04:56 +01:00
umip.c
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unwind_frame.c
…
unwind_guess.c
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unwind_orc.c
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uprobes.c
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verify_cpu.S
x86: Prepare asm files for straight-line-speculation
2022-05-15 20:18:49 +02:00
vm86_32.c
signal: Replace force_fatal_sig with force_exit_sig when in doubt
2021-11-25 09:49:07 +01:00
vmlinux.lds.S
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vsmp_64.c
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x86_init.c
…