Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 fixes from Ingo Molnar: "There's a number of fixes: - a round of fixes for CPUID-less legacy CPUs - a number of microcode loader fixes - i8042 detection robustization fixes - stack dump/unwinder fixes - x86 SoC platform driver fixes - a GCC 7 warning fix - virtualization related fixes" * 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (24 commits) Revert "x86/unwind: Detect bad stack return address" x86/paravirt: Mark unused patch_default label x86/microcode/AMD: Reload proper initrd start address x86/platform/intel/quark: Add printf attribute to imr_self_test_result() x86/platform/intel-mid: Switch MPU3050 driver to IIO x86/alternatives: Do not use sync_core() to serialize I$ x86/topology: Document cpu_llc_id x86/hyperv: Handle unknown NMIs on one CPU when unknown_nmi_panic x86/asm: Rewrite sync_core() to use IRET-to-self x86/microcode/intel: Replace sync_core() with native_cpuid() Revert "x86/boot: Fail the boot if !M486 and CPUID is missing" x86/asm/32: Make sync_core() handle missing CPUID on all 32-bit kernels x86/cpu: Probe CPUID leaf 6 even when cpuid_level == 6 x86/tools: Fix gcc-7 warning in relocs.c x86/unwind: Dump stack data on warnings x86/unwind: Adjust last frame check for aligned function stacks x86/init: Fix a couple of comment typos x86/init: Remove i8042_detect() from platform ops Input: i8042 - Trust firmware a bit more when probing on X86 x86/init: Add i8042 state to the platform data ...
This commit is contained in:
Linus Torvalds
Коммит
6ac3bb167f
|
|
@ -63,6 +63,15 @@ The topology of a system is described in the units of:
|
|||
The maximum possible number of packages in the system. Helpful for per
|
||||
package facilities to preallocate per package information.
|
||||
|
||||
- cpu_llc_id:
|
||||
|
||||
A per-CPU variable containing:
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||||
- On Intel, the first APIC ID of the list of CPUs sharing the Last Level
|
||||
Cache
|
||||
|
||||
- On AMD, the Node ID or Core Complex ID containing the Last Level
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||||
Cache. In general, it is a number identifying an LLC uniquely on the
|
||||
system.
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||||
|
||||
* Cores:
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||||
|
||||
|
|
|
|||
|
|
@ -87,12 +87,6 @@ int validate_cpu(void)
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return -1;
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}
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if (CONFIG_X86_MINIMUM_CPU_FAMILY <= 4 && !IS_ENABLED(CONFIG_M486) &&
|
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!has_eflag(X86_EFLAGS_ID)) {
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printf("This kernel requires a CPU with the CPUID instruction. Build with CONFIG_M486=y to run on this CPU.\n");
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return -1;
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}
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|
||||
if (err_flags) {
|
||||
puts("This kernel requires the following features "
|
||||
"not present on the CPU:\n");
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||||
|
|
|
|||
|
|
@ -602,33 +602,69 @@ static __always_inline void cpu_relax(void)
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rep_nop();
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}
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/* Stop speculative execution and prefetching of modified code. */
|
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/*
|
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* This function forces the icache and prefetched instruction stream to
|
||||
* catch up with reality in two very specific cases:
|
||||
*
|
||||
* a) Text was modified using one virtual address and is about to be executed
|
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* from the same physical page at a different virtual address.
|
||||
*
|
||||
* b) Text was modified on a different CPU, may subsequently be
|
||||
* executed on this CPU, and you want to make sure the new version
|
||||
* gets executed. This generally means you're calling this in a IPI.
|
||||
*
|
||||
* If you're calling this for a different reason, you're probably doing
|
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* it wrong.
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*/
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static inline void sync_core(void)
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{
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int tmp;
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/*
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* There are quite a few ways to do this. IRET-to-self is nice
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* because it works on every CPU, at any CPL (so it's compatible
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* with paravirtualization), and it never exits to a hypervisor.
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* The only down sides are that it's a bit slow (it seems to be
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* a bit more than 2x slower than the fastest options) and that
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* it unmasks NMIs. The "push %cs" is needed because, in
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* paravirtual environments, __KERNEL_CS may not be a valid CS
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* value when we do IRET directly.
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*
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* In case NMI unmasking or performance ever becomes a problem,
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* the next best option appears to be MOV-to-CR2 and an
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* unconditional jump. That sequence also works on all CPUs,
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* but it will fault at CPL3 (i.e. Xen PV and lguest).
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*
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* CPUID is the conventional way, but it's nasty: it doesn't
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* exist on some 486-like CPUs, and it usually exits to a
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* hypervisor.
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*
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* Like all of Linux's memory ordering operations, this is a
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* compiler barrier as well.
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*/
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register void *__sp asm(_ASM_SP);
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#ifdef CONFIG_M486
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/*
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* Do a CPUID if available, otherwise do a jump. The jump
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* can conveniently enough be the jump around CPUID.
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*/
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asm volatile("cmpl %2,%1\n\t"
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"jl 1f\n\t"
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"cpuid\n"
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"1:"
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: "=a" (tmp)
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: "rm" (boot_cpu_data.cpuid_level), "ri" (0), "0" (1)
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: "ebx", "ecx", "edx", "memory");
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#ifdef CONFIG_X86_32
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asm volatile (
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"pushfl\n\t"
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"pushl %%cs\n\t"
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"pushl $1f\n\t"
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"iret\n\t"
|
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"1:"
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: "+r" (__sp) : : "memory");
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#else
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/*
|
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* CPUID is a barrier to speculative execution.
|
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* Prefetched instructions are automatically
|
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* invalidated when modified.
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*/
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asm volatile("cpuid"
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||||
: "=a" (tmp)
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||||
: "0" (1)
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: "ebx", "ecx", "edx", "memory");
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unsigned int tmp;
|
||||
|
||||
asm volatile (
|
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"mov %%ss, %0\n\t"
|
||||
"pushq %q0\n\t"
|
||||
"pushq %%rsp\n\t"
|
||||
"addq $8, (%%rsp)\n\t"
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"pushfq\n\t"
|
||||
"mov %%cs, %0\n\t"
|
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"pushq %q0\n\t"
|
||||
"pushq $1f\n\t"
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"iretq\n\t"
|
||||
"1:"
|
||||
: "=&r" (tmp), "+r" (__sp) : : "cc", "memory");
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#endif
|
||||
}
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|
||||
|
|
|
|||
|
|
@ -12,7 +12,7 @@ struct unwind_state {
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|||
struct task_struct *task;
|
||||
int graph_idx;
|
||||
#ifdef CONFIG_FRAME_POINTER
|
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unsigned long *bp;
|
||||
unsigned long *bp, *orig_sp;
|
||||
struct pt_regs *regs;
|
||||
#else
|
||||
unsigned long *sp;
|
||||
|
|
|
|||
|
|
@ -59,7 +59,7 @@ struct x86_init_irqs {
|
|||
|
||||
/**
|
||||
* struct x86_init_oem - oem platform specific customizing functions
|
||||
* @arch_setup: platform specific architecure setup
|
||||
* @arch_setup: platform specific architecture setup
|
||||
* @banner: print a platform specific banner
|
||||
*/
|
||||
struct x86_init_oem {
|
||||
|
|
@ -164,9 +164,26 @@ struct x86_legacy_devices {
|
|||
int pnpbios;
|
||||
};
|
||||
|
||||
/**
|
||||
* enum x86_legacy_i8042_state - i8042 keyboard controller state
|
||||
* @X86_LEGACY_I8042_PLATFORM_ABSENT: the controller is always absent on
|
||||
* given platform/subarch.
|
||||
* @X86_LEGACY_I8042_FIRMWARE_ABSENT: firmware reports that the controller
|
||||
* is absent.
|
||||
* @X86_LEGACY_i8042_EXPECTED_PRESENT: the controller is likely to be
|
||||
* present, the i8042 driver should probe for controller existence.
|
||||
*/
|
||||
enum x86_legacy_i8042_state {
|
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X86_LEGACY_I8042_PLATFORM_ABSENT,
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X86_LEGACY_I8042_FIRMWARE_ABSENT,
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X86_LEGACY_I8042_EXPECTED_PRESENT,
|
||||
};
|
||||
|
||||
/**
|
||||
* struct x86_legacy_features - legacy x86 features
|
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*
|
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* @i8042: indicated if we expect the device to have i8042 controller
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* present.
|
||||
* @rtc: this device has a CMOS real-time clock present
|
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* @reserve_bios_regions: boot code will search for the EBDA address and the
|
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* start of the 640k - 1M BIOS region. If false, the platform must
|
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|
|
@ -175,6 +192,7 @@ struct x86_legacy_devices {
|
|||
* documentation for further details.
|
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*/
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||||
struct x86_legacy_features {
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enum x86_legacy_i8042_state i8042;
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int rtc;
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int reserve_bios_regions;
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struct x86_legacy_devices devices;
|
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|
|
@ -188,15 +206,14 @@ struct x86_legacy_features {
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|||
* @set_wallclock: set time back to HW clock
|
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* @is_untracked_pat_range exclude from PAT logic
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* @nmi_init enable NMI on cpus
|
||||
* @i8042_detect pre-detect if i8042 controller exists
|
||||
* @save_sched_clock_state: save state for sched_clock() on suspend
|
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* @restore_sched_clock_state: restore state for sched_clock() on resume
|
||||
* @apic_post_init: adjust apic if neeeded
|
||||
* @apic_post_init: adjust apic if needed
|
||||
* @legacy: legacy features
|
||||
* @set_legacy_features: override legacy features. Use of this callback
|
||||
* is highly discouraged. You should only need
|
||||
* this if your hardware platform requires further
|
||||
* custom fine tuning far beyong what may be
|
||||
* custom fine tuning far beyond what may be
|
||||
* possible in x86_early_init_platform_quirks() by
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* only using the current x86_hardware_subarch
|
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* semantics.
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|
|
@ -210,7 +227,6 @@ struct x86_platform_ops {
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bool (*is_untracked_pat_range)(u64 start, u64 end);
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void (*nmi_init)(void);
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unsigned char (*get_nmi_reason)(void);
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int (*i8042_detect)(void);
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void (*save_sched_clock_state)(void);
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void (*restore_sched_clock_state)(void);
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void (*apic_post_init)(void);
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|
|
|
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|
|
@ -930,6 +930,13 @@ static int __init acpi_parse_fadt(struct acpi_table_header *table)
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x86_platform.legacy.devices.pnpbios = 0;
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}
|
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|
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if (acpi_gbl_FADT.header.revision >= FADT2_REVISION_ID &&
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!(acpi_gbl_FADT.boot_flags & ACPI_FADT_8042) &&
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x86_platform.legacy.i8042 != X86_LEGACY_I8042_PLATFORM_ABSENT) {
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pr_debug("ACPI: i8042 controller is absent\n");
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x86_platform.legacy.i8042 = X86_LEGACY_I8042_FIRMWARE_ABSENT;
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}
|
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|
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if (acpi_gbl_FADT.boot_flags & ACPI_FADT_NO_CMOS_RTC) {
|
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pr_debug("ACPI: not registering RTC platform device\n");
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x86_platform.legacy.rtc = 0;
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|
|
|
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|
|
@ -337,7 +337,11 @@ done:
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n_dspl, (unsigned long)orig_insn + n_dspl + repl_len);
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}
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|
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static void __init_or_module optimize_nops(struct alt_instr *a, u8 *instr)
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/*
|
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* "noinline" to cause control flow change and thus invalidate I$ and
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* cause refetch after modification.
|
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*/
|
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static void __init_or_module noinline optimize_nops(struct alt_instr *a, u8 *instr)
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{
|
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unsigned long flags;
|
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|
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|
|
@ -346,7 +350,6 @@ static void __init_or_module optimize_nops(struct alt_instr *a, u8 *instr)
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|
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local_irq_save(flags);
|
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add_nops(instr + (a->instrlen - a->padlen), a->padlen);
|
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sync_core();
|
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local_irq_restore(flags);
|
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|
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DUMP_BYTES(instr, a->instrlen, "%p: [%d:%d) optimized NOPs: ",
|
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|
|
@ -359,9 +362,12 @@ static void __init_or_module optimize_nops(struct alt_instr *a, u8 *instr)
|
|||
* This implies that asymmetric systems where APs have less capabilities than
|
||||
* the boot processor are not handled. Tough. Make sure you disable such
|
||||
* features by hand.
|
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*
|
||||
* Marked "noinline" to cause control flow change and thus insn cache
|
||||
* to refetch changed I$ lines.
|
||||
*/
|
||||
void __init_or_module apply_alternatives(struct alt_instr *start,
|
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struct alt_instr *end)
|
||||
void __init_or_module noinline apply_alternatives(struct alt_instr *start,
|
||||
struct alt_instr *end)
|
||||
{
|
||||
struct alt_instr *a;
|
||||
u8 *instr, *replacement;
|
||||
|
|
@ -667,7 +673,6 @@ void *__init_or_module text_poke_early(void *addr, const void *opcode,
|
|||
unsigned long flags;
|
||||
local_irq_save(flags);
|
||||
memcpy(addr, opcode, len);
|
||||
sync_core();
|
||||
local_irq_restore(flags);
|
||||
/* Could also do a CLFLUSH here to speed up CPU recovery; but
|
||||
that causes hangs on some VIA CPUs. */
|
||||
|
|
|
|||
|
|
@ -667,13 +667,14 @@ void get_cpu_cap(struct cpuinfo_x86 *c)
|
|||
c->x86_capability[CPUID_1_EDX] = edx;
|
||||
}
|
||||
|
||||
/* Thermal and Power Management Leaf: level 0x00000006 (eax) */
|
||||
if (c->cpuid_level >= 0x00000006)
|
||||
c->x86_capability[CPUID_6_EAX] = cpuid_eax(0x00000006);
|
||||
|
||||
/* Additional Intel-defined flags: level 0x00000007 */
|
||||
if (c->cpuid_level >= 0x00000007) {
|
||||
cpuid_count(0x00000007, 0, &eax, &ebx, &ecx, &edx);
|
||||
|
||||
c->x86_capability[CPUID_7_0_EBX] = ebx;
|
||||
|
||||
c->x86_capability[CPUID_6_EAX] = cpuid_eax(0x00000006);
|
||||
c->x86_capability[CPUID_7_ECX] = ecx;
|
||||
}
|
||||
|
||||
|
|
|
|||
|
|
@ -116,10 +116,11 @@ static inline u16 find_equiv_id(struct equiv_cpu_entry *equiv_cpu_table,
|
|||
|
||||
/*
|
||||
* This scans the ucode blob for the proper container as we can have multiple
|
||||
* containers glued together.
|
||||
* containers glued together. Returns the equivalence ID from the equivalence
|
||||
* table or 0 if none found.
|
||||
*/
|
||||
static struct container
|
||||
find_proper_container(u8 *ucode, size_t size, u16 *ret_id)
|
||||
static u16
|
||||
find_proper_container(u8 *ucode, size_t size, struct container *ret_cont)
|
||||
{
|
||||
struct container ret = { NULL, 0 };
|
||||
u32 eax, ebx, ecx, edx;
|
||||
|
|
@ -138,7 +139,7 @@ find_proper_container(u8 *ucode, size_t size, u16 *ret_id)
|
|||
if (header[0] != UCODE_MAGIC ||
|
||||
header[1] != UCODE_EQUIV_CPU_TABLE_TYPE || /* type */
|
||||
header[2] == 0) /* size */
|
||||
return ret;
|
||||
return eq_id;
|
||||
|
||||
eax = 0x00000001;
|
||||
ecx = 0;
|
||||
|
|
@ -163,8 +164,9 @@ find_proper_container(u8 *ucode, size_t size, u16 *ret_id)
|
|||
* ucode update loop below
|
||||
*/
|
||||
left = ret.size - offset;
|
||||
*ret_id = eq_id;
|
||||
return ret;
|
||||
|
||||
*ret_cont = ret;
|
||||
return eq_id;
|
||||
}
|
||||
|
||||
/*
|
||||
|
|
@ -189,7 +191,7 @@ find_proper_container(u8 *ucode, size_t size, u16 *ret_id)
|
|||
ucode = data;
|
||||
}
|
||||
|
||||
return ret;
|
||||
return eq_id;
|
||||
}
|
||||
|
||||
static int __apply_microcode_amd(struct microcode_amd *mc_amd)
|
||||
|
|
@ -214,17 +216,18 @@ static int __apply_microcode_amd(struct microcode_amd *mc_amd)
|
|||
* and on 32-bit during save_microcode_in_initrd_amd() -- we can call
|
||||
* load_microcode_amd() to save equivalent cpu table and microcode patches in
|
||||
* kernel heap memory.
|
||||
*
|
||||
* Returns true if container found (sets @ret_cont), false otherwise.
|
||||
*/
|
||||
static struct container
|
||||
apply_microcode_early_amd(void *ucode, size_t size, bool save_patch)
|
||||
static bool apply_microcode_early_amd(void *ucode, size_t size, bool save_patch,
|
||||
struct container *ret_cont)
|
||||
{
|
||||
struct container ret = { NULL, 0 };
|
||||
u8 (*patch)[PATCH_MAX_SIZE];
|
||||
u32 rev, *header, *new_rev;
|
||||
struct container ret;
|
||||
int offset, left;
|
||||
u32 rev, *header;
|
||||
u8 *data;
|
||||
u16 eq_id = 0;
|
||||
u32 *new_rev;
|
||||
u8 *data;
|
||||
|
||||
#ifdef CONFIG_X86_32
|
||||
new_rev = (u32 *)__pa_nodebug(&ucode_new_rev);
|
||||
|
|
@ -235,11 +238,11 @@ apply_microcode_early_amd(void *ucode, size_t size, bool save_patch)
|
|||
#endif
|
||||
|
||||
if (check_current_patch_level(&rev, true))
|
||||
return (struct container){ NULL, 0 };
|
||||
return false;
|
||||
|
||||
ret = find_proper_container(ucode, size, &eq_id);
|
||||
eq_id = find_proper_container(ucode, size, &ret);
|
||||
if (!eq_id)
|
||||
return (struct container){ NULL, 0 };
|
||||
return false;
|
||||
|
||||
this_equiv_id = eq_id;
|
||||
header = (u32 *)ret.data;
|
||||
|
|
@ -273,7 +276,11 @@ apply_microcode_early_amd(void *ucode, size_t size, bool save_patch)
|
|||
data += offset;
|
||||
left -= offset;
|
||||
}
|
||||
return ret;
|
||||
|
||||
if (ret_cont)
|
||||
*ret_cont = ret;
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
static bool get_builtin_microcode(struct cpio_data *cp, unsigned int family)
|
||||
|
|
@ -294,6 +301,7 @@ static bool get_builtin_microcode(struct cpio_data *cp, unsigned int family)
|
|||
void __init load_ucode_amd_bsp(unsigned int family)
|
||||
{
|
||||
struct ucode_cpu_info *uci;
|
||||
u32 eax, ebx, ecx, edx;
|
||||
struct cpio_data cp;
|
||||
const char *path;
|
||||
bool use_pa;
|
||||
|
|
@ -315,9 +323,12 @@ void __init load_ucode_amd_bsp(unsigned int family)
|
|||
return;
|
||||
|
||||
/* Get BSP's CPUID.EAX(1), needed in load_microcode_amd() */
|
||||
uci->cpu_sig.sig = cpuid_eax(1);
|
||||
eax = 1;
|
||||
ecx = 0;
|
||||
native_cpuid(&eax, &ebx, &ecx, &edx);
|
||||
uci->cpu_sig.sig = eax;
|
||||
|
||||
apply_microcode_early_amd(cp.data, cp.size, true);
|
||||
apply_microcode_early_amd(cp.data, cp.size, true, NULL);
|
||||
}
|
||||
|
||||
#ifdef CONFIG_X86_32
|
||||
|
|
@ -349,7 +360,7 @@ void load_ucode_amd_ap(unsigned int family)
|
|||
* This would set amd_ucode_patch above so that the following APs can
|
||||
* use it directly instead of going down this path again.
|
||||
*/
|
||||
apply_microcode_early_amd(cp.data, cp.size, true);
|
||||
apply_microcode_early_amd(cp.data, cp.size, true, NULL);
|
||||
}
|
||||
#else
|
||||
void load_ucode_amd_ap(unsigned int family)
|
||||
|
|
@ -387,8 +398,7 @@ reget:
|
|||
}
|
||||
}
|
||||
|
||||
cont = apply_microcode_early_amd(cp.data, cp.size, false);
|
||||
if (!(cont.data && cont.size)) {
|
||||
if (!apply_microcode_early_amd(cp.data, cp.size, false, &cont)) {
|
||||
cont.size = -1;
|
||||
return;
|
||||
}
|
||||
|
|
@ -443,7 +453,7 @@ int __init save_microcode_in_initrd_amd(unsigned int fam)
|
|||
return -EINVAL;
|
||||
}
|
||||
|
||||
cont = find_proper_container(cp.data, cp.size, &eq_id);
|
||||
eq_id = find_proper_container(cp.data, cp.size, &cont);
|
||||
if (!eq_id) {
|
||||
cont.size = -1;
|
||||
return -EINVAL;
|
||||
|
|
|
|||
|
|
@ -44,7 +44,7 @@
|
|||
#define DRIVER_VERSION "2.2"
|
||||
|
||||
static struct microcode_ops *microcode_ops;
|
||||
static bool dis_ucode_ldr;
|
||||
static bool dis_ucode_ldr = true;
|
||||
|
||||
LIST_HEAD(microcode_cache);
|
||||
|
||||
|
|
@ -76,6 +76,7 @@ struct cpu_info_ctx {
|
|||
static bool __init check_loader_disabled_bsp(void)
|
||||
{
|
||||
static const char *__dis_opt_str = "dis_ucode_ldr";
|
||||
u32 a, b, c, d;
|
||||
|
||||
#ifdef CONFIG_X86_32
|
||||
const char *cmdline = (const char *)__pa_nodebug(boot_command_line);
|
||||
|
|
@ -88,8 +89,23 @@ static bool __init check_loader_disabled_bsp(void)
|
|||
bool *res = &dis_ucode_ldr;
|
||||
#endif
|
||||
|
||||
if (cmdline_find_option_bool(cmdline, option))
|
||||
*res = true;
|
||||
if (!have_cpuid_p())
|
||||
return *res;
|
||||
|
||||
a = 1;
|
||||
c = 0;
|
||||
native_cpuid(&a, &b, &c, &d);
|
||||
|
||||
/*
|
||||
* CPUID(1).ECX[31]: reserved for hypervisor use. This is still not
|
||||
* completely accurate as xen pv guests don't see that CPUID bit set but
|
||||
* that's good enough as they don't land on the BSP path anyway.
|
||||
*/
|
||||
if (c & BIT(31))
|
||||
return *res;
|
||||
|
||||
if (cmdline_find_option_bool(cmdline, option) <= 0)
|
||||
*res = false;
|
||||
|
||||
return *res;
|
||||
}
|
||||
|
|
@ -121,9 +137,6 @@ void __init load_ucode_bsp(void)
|
|||
if (check_loader_disabled_bsp())
|
||||
return;
|
||||
|
||||
if (!have_cpuid_p())
|
||||
return;
|
||||
|
||||
vendor = x86_cpuid_vendor();
|
||||
family = x86_cpuid_family();
|
||||
|
||||
|
|
@ -157,9 +170,6 @@ void load_ucode_ap(void)
|
|||
if (check_loader_disabled_ap())
|
||||
return;
|
||||
|
||||
if (!have_cpuid_p())
|
||||
return;
|
||||
|
||||
vendor = x86_cpuid_vendor();
|
||||
family = x86_cpuid_family();
|
||||
|
||||
|
|
@ -233,14 +243,12 @@ struct cpio_data find_microcode_in_initrd(const char *path, bool use_pa)
|
|||
# endif
|
||||
|
||||
/*
|
||||
* Did we relocate the ramdisk?
|
||||
*
|
||||
* So we possibly relocate the ramdisk *after* applying microcode on the
|
||||
* BSP so we rely on use_pa (use physical addresses) - even if it is not
|
||||
* absolutely correct - to determine whether we've done the ramdisk
|
||||
* relocation already.
|
||||
* Fixup the start address: after reserve_initrd() runs, initrd_start
|
||||
* has the virtual address of the beginning of the initrd. It also
|
||||
* possibly relocates the ramdisk. In either case, initrd_start contains
|
||||
* the updated address so use that instead.
|
||||
*/
|
||||
if (!use_pa && relocated_ramdisk)
|
||||
if (!use_pa && initrd_start)
|
||||
start = initrd_start;
|
||||
|
||||
return find_cpio_data(path, (void *)start, size, NULL);
|
||||
|
|
|
|||
|
|
@ -368,6 +368,26 @@ next:
|
|||
return patch;
|
||||
}
|
||||
|
||||
static void cpuid_1(void)
|
||||
{
|
||||
/*
|
||||
* According to the Intel SDM, Volume 3, 9.11.7:
|
||||
*
|
||||
* CPUID returns a value in a model specific register in
|
||||
* addition to its usual register return values. The
|
||||
* semantics of CPUID cause it to deposit an update ID value
|
||||
* in the 64-bit model-specific register at address 08BH
|
||||
* (IA32_BIOS_SIGN_ID). If no update is present in the
|
||||
* processor, the value in the MSR remains unmodified.
|
||||
*
|
||||
* Use native_cpuid -- this code runs very early and we don't
|
||||
* want to mess with paravirt.
|
||||
*/
|
||||
unsigned int eax = 1, ebx, ecx = 0, edx;
|
||||
|
||||
native_cpuid(&eax, &ebx, &ecx, &edx);
|
||||
}
|
||||
|
||||
static int collect_cpu_info_early(struct ucode_cpu_info *uci)
|
||||
{
|
||||
unsigned int val[2];
|
||||
|
|
@ -393,7 +413,7 @@ static int collect_cpu_info_early(struct ucode_cpu_info *uci)
|
|||
native_wrmsrl(MSR_IA32_UCODE_REV, 0);
|
||||
|
||||
/* As documented in the SDM: Do a CPUID 1 here */
|
||||
sync_core();
|
||||
cpuid_1();
|
||||
|
||||
/* get the current revision from MSR 0x8B */
|
||||
native_rdmsr(MSR_IA32_UCODE_REV, val[0], val[1]);
|
||||
|
|
@ -593,7 +613,7 @@ static int apply_microcode_early(struct ucode_cpu_info *uci, bool early)
|
|||
native_wrmsrl(MSR_IA32_UCODE_REV, 0);
|
||||
|
||||
/* As documented in the SDM: Do a CPUID 1 here */
|
||||
sync_core();
|
||||
cpuid_1();
|
||||
|
||||
/* get the current revision from MSR 0x8B */
|
||||
native_rdmsr(MSR_IA32_UCODE_REV, val[0], val[1]);
|
||||
|
|
@ -805,7 +825,7 @@ static int apply_microcode_intel(int cpu)
|
|||
wrmsrl(MSR_IA32_UCODE_REV, 0);
|
||||
|
||||
/* As documented in the SDM: Do a CPUID 1 here */
|
||||
sync_core();
|
||||
cpuid_1();
|
||||
|
||||
/* get the current revision from MSR 0x8B */
|
||||
rdmsr(MSR_IA32_UCODE_REV, val[0], val[1]);
|
||||
|
|
|
|||
|
|
@ -30,6 +30,7 @@
|
|||
#include <asm/apic.h>
|
||||
#include <asm/timer.h>
|
||||
#include <asm/reboot.h>
|
||||
#include <asm/nmi.h>
|
||||
|
||||
struct ms_hyperv_info ms_hyperv;
|
||||
EXPORT_SYMBOL_GPL(ms_hyperv);
|
||||
|
|
@ -157,6 +158,26 @@ static unsigned char hv_get_nmi_reason(void)
|
|||
return 0;
|
||||
}
|
||||
|
||||
#ifdef CONFIG_X86_LOCAL_APIC
|
||||
/*
|
||||
* Prior to WS2016 Debug-VM sends NMIs to all CPUs which makes
|
||||
* it dificult to process CHANNELMSG_UNLOAD in case of crash. Handle
|
||||
* unknown NMI on the first CPU which gets it.
|
||||
*/
|
||||
static int hv_nmi_unknown(unsigned int val, struct pt_regs *regs)
|
||||
{
|
||||
static atomic_t nmi_cpu = ATOMIC_INIT(-1);
|
||||
|
||||
if (!unknown_nmi_panic)
|
||||
return NMI_DONE;
|
||||
|
||||
if (atomic_cmpxchg(&nmi_cpu, -1, raw_smp_processor_id()) != -1)
|
||||
return NMI_HANDLED;
|
||||
|
||||
return NMI_DONE;
|
||||
}
|
||||
#endif
|
||||
|
||||
static void __init ms_hyperv_init_platform(void)
|
||||
{
|
||||
/*
|
||||
|
|
@ -182,6 +203,9 @@ static void __init ms_hyperv_init_platform(void)
|
|||
pr_info("HyperV: LAPIC Timer Frequency: %#x\n",
|
||||
lapic_timer_frequency);
|
||||
}
|
||||
|
||||
register_nmi_handler(NMI_UNKNOWN, hv_nmi_unknown, NMI_FLAG_FIRST,
|
||||
"hv_nmi_unknown");
|
||||
#endif
|
||||
|
||||
if (ms_hyperv.features & HV_X64_MSR_TIME_REF_COUNT_AVAILABLE)
|
||||
|
|
|
|||
|
|
@ -68,7 +68,7 @@ unsigned native_patch(u8 type, u16 clobbers, void *ibuf,
|
|||
#endif
|
||||
|
||||
default:
|
||||
patch_default:
|
||||
patch_default: __maybe_unused
|
||||
ret = paravirt_patch_default(type, clobbers, ibuf, addr, len);
|
||||
break;
|
||||
|
||||
|
|
|
|||
|
|
@ -80,7 +80,7 @@ unsigned native_patch(u8 type, u16 clobbers, void *ibuf,
|
|||
#endif
|
||||
|
||||
default:
|
||||
patch_default:
|
||||
patch_default: __maybe_unused
|
||||
ret = paravirt_patch_default(type, clobbers, ibuf, addr, len);
|
||||
break;
|
||||
|
||||
|
|
|
|||
|
|
@ -6,6 +6,7 @@
|
|||
|
||||
void __init x86_early_init_platform_quirks(void)
|
||||
{
|
||||
x86_platform.legacy.i8042 = X86_LEGACY_I8042_EXPECTED_PRESENT;
|
||||
x86_platform.legacy.rtc = 1;
|
||||
x86_platform.legacy.reserve_bios_regions = 0;
|
||||
x86_platform.legacy.devices.pnpbios = 1;
|
||||
|
|
@ -16,10 +17,14 @@ void __init x86_early_init_platform_quirks(void)
|
|||
break;
|
||||
case X86_SUBARCH_XEN:
|
||||
case X86_SUBARCH_LGUEST:
|
||||
x86_platform.legacy.devices.pnpbios = 0;
|
||||
x86_platform.legacy.rtc = 0;
|
||||
break;
|
||||
case X86_SUBARCH_INTEL_MID:
|
||||
case X86_SUBARCH_CE4100:
|
||||
x86_platform.legacy.devices.pnpbios = 0;
|
||||
x86_platform.legacy.rtc = 0;
|
||||
x86_platform.legacy.i8042 = X86_LEGACY_I8042_PLATFORM_ABSENT;
|
||||
break;
|
||||
}
|
||||
|
||||
|
|
|
|||
|
|
@ -6,6 +6,37 @@
|
|||
|
||||
#define FRAME_HEADER_SIZE (sizeof(long) * 2)
|
||||
|
||||
static void unwind_dump(struct unwind_state *state, unsigned long *sp)
|
||||
{
|
||||
static bool dumped_before = false;
|
||||
bool prev_zero, zero = false;
|
||||
unsigned long word;
|
||||
|
||||
if (dumped_before)
|
||||
return;
|
||||
|
||||
dumped_before = true;
|
||||
|
||||
printk_deferred("unwind stack type:%d next_sp:%p mask:%lx graph_idx:%d\n",
|
||||
state->stack_info.type, state->stack_info.next_sp,
|
||||
state->stack_mask, state->graph_idx);
|
||||
|
||||
for (sp = state->orig_sp; sp < state->stack_info.end; sp++) {
|
||||
word = READ_ONCE_NOCHECK(*sp);
|
||||
|
||||
prev_zero = zero;
|
||||
zero = word == 0;
|
||||
|
||||
if (zero) {
|
||||
if (!prev_zero)
|
||||
printk_deferred("%p: %016x ...\n", sp, 0);
|
||||
continue;
|
||||
}
|
||||
|
||||
printk_deferred("%p: %016lx (%pB)\n", sp, word, (void *)word);
|
||||
}
|
||||
}
|
||||
|
||||
unsigned long unwind_get_return_address(struct unwind_state *state)
|
||||
{
|
||||
unsigned long addr;
|
||||
|
|
@ -20,15 +51,7 @@ unsigned long unwind_get_return_address(struct unwind_state *state)
|
|||
addr = ftrace_graph_ret_addr(state->task, &state->graph_idx, *addr_p,
|
||||
addr_p);
|
||||
|
||||
if (!__kernel_text_address(addr)) {
|
||||
printk_deferred_once(KERN_WARNING
|
||||
"WARNING: unrecognized kernel stack return address %p at %p in %s:%d\n",
|
||||
(void *)addr, addr_p, state->task->comm,
|
||||
state->task->pid);
|
||||
return 0;
|
||||
}
|
||||
|
||||
return addr;
|
||||
return __kernel_text_address(addr) ? addr : 0;
|
||||
}
|
||||
EXPORT_SYMBOL_GPL(unwind_get_return_address);
|
||||
|
||||
|
|
@ -46,7 +69,14 @@ static bool is_last_task_frame(struct unwind_state *state)
|
|||
unsigned long bp = (unsigned long)state->bp;
|
||||
unsigned long regs = (unsigned long)task_pt_regs(state->task);
|
||||
|
||||
return bp == regs - FRAME_HEADER_SIZE;
|
||||
/*
|
||||
* We have to check for the last task frame at two different locations
|
||||
* because gcc can occasionally decide to realign the stack pointer and
|
||||
* change the offset of the stack frame by a word in the prologue of a
|
||||
* function called by head/entry code.
|
||||
*/
|
||||
return bp == regs - FRAME_HEADER_SIZE ||
|
||||
bp == regs - FRAME_HEADER_SIZE - sizeof(long);
|
||||
}
|
||||
|
||||
/*
|
||||
|
|
@ -67,6 +97,7 @@ static bool update_stack_state(struct unwind_state *state, void *addr,
|
|||
size_t len)
|
||||
{
|
||||
struct stack_info *info = &state->stack_info;
|
||||
enum stack_type orig_type = info->type;
|
||||
|
||||
/*
|
||||
* If addr isn't on the current stack, switch to the next one.
|
||||
|
|
@ -80,6 +111,9 @@ static bool update_stack_state(struct unwind_state *state, void *addr,
|
|||
&state->stack_mask))
|
||||
return false;
|
||||
|
||||
if (!state->orig_sp || info->type != orig_type)
|
||||
state->orig_sp = addr;
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
|
|
@ -178,11 +212,13 @@ bad_address:
|
|||
"WARNING: kernel stack regs at %p in %s:%d has bad 'bp' value %p\n",
|
||||
state->regs, state->task->comm,
|
||||
state->task->pid, next_frame);
|
||||
unwind_dump(state, (unsigned long *)state->regs);
|
||||
} else {
|
||||
printk_deferred_once(KERN_WARNING
|
||||
"WARNING: kernel stack frame pointer at %p in %s:%d has bad value %p\n",
|
||||
state->bp, state->task->comm,
|
||||
state->task->pid, next_frame);
|
||||
unwind_dump(state, state->bp);
|
||||
}
|
||||
the_end:
|
||||
state->stack_info.type = STACK_TYPE_UNKNOWN;
|
||||
|
|
|
|||
|
|
@ -89,7 +89,6 @@ struct x86_cpuinit_ops x86_cpuinit = {
|
|||
};
|
||||
|
||||
static void default_nmi_init(void) { };
|
||||
static int default_i8042_detect(void) { return 1; };
|
||||
|
||||
struct x86_platform_ops x86_platform __ro_after_init = {
|
||||
.calibrate_cpu = native_calibrate_cpu,
|
||||
|
|
@ -100,7 +99,6 @@ struct x86_platform_ops x86_platform __ro_after_init = {
|
|||
.is_untracked_pat_range = is_ISA_range,
|
||||
.nmi_init = default_nmi_init,
|
||||
.get_nmi_reason = default_get_nmi_reason,
|
||||
.i8042_detect = default_i8042_detect,
|
||||
.save_sched_clock_state = tsc_save_sched_clock_state,
|
||||
.restore_sched_clock_state = tsc_restore_sched_clock_state,
|
||||
};
|
||||
|
|
|
|||
|
|
@ -23,11 +23,6 @@
|
|||
#include <asm/io_apic.h>
|
||||
#include <asm/emergency-restart.h>
|
||||
|
||||
static int ce4100_i8042_detect(void)
|
||||
{
|
||||
return 0;
|
||||
}
|
||||
|
||||
/*
|
||||
* The CE4100 platform has an internal 8051 Microcontroller which is
|
||||
* responsible for signaling to the external Power Management Unit the
|
||||
|
|
@ -145,7 +140,6 @@ static void sdv_pci_init(void)
|
|||
void __init x86_ce4100_early_setup(void)
|
||||
{
|
||||
x86_init.oem.arch_setup = sdv_arch_setup;
|
||||
x86_platform.i8042_detect = ce4100_i8042_detect;
|
||||
x86_init.resources.probe_roms = x86_init_noop;
|
||||
x86_init.mpparse.get_smp_config = x86_init_uint_noop;
|
||||
x86_init.mpparse.find_smp_config = x86_init_noop;
|
||||
|
|
|
|||
|
|
@ -19,7 +19,7 @@ obj-$(subst m,y,$(CONFIG_SPI_SPIDEV)) += platform_spidev.o
|
|||
# I2C Devices
|
||||
obj-$(subst m,y,$(CONFIG_SENSORS_EMC1403)) += platform_emc1403.o
|
||||
obj-$(subst m,y,$(CONFIG_SENSORS_LIS3LV02D)) += platform_lis331.o
|
||||
obj-$(subst m,y,$(CONFIG_INPUT_MPU3050)) += platform_mpu3050.o
|
||||
obj-$(subst m,y,$(CONFIG_MPU3050_I2C)) += platform_mpu3050.o
|
||||
obj-$(subst m,y,$(CONFIG_INPUT_BMA150)) += platform_bma023.o
|
||||
obj-$(subst m,y,$(CONFIG_DRM_MEDFIELD)) += platform_tc35876x.o
|
||||
# I2C GPIO Expanders
|
||||
|
|
|
|||
|
|
@ -161,12 +161,6 @@ out:
|
|||
regulator_has_full_constraints();
|
||||
}
|
||||
|
||||
/* MID systems don't have i8042 controller */
|
||||
static int intel_mid_i8042_detect(void)
|
||||
{
|
||||
return 0;
|
||||
}
|
||||
|
||||
/*
|
||||
* Moorestown does not have external NMI source nor port 0x61 to report
|
||||
* NMI status. The possible NMI sources are from pmu as a result of NMI
|
||||
|
|
@ -197,7 +191,6 @@ void __init x86_intel_mid_early_setup(void)
|
|||
x86_cpuinit.setup_percpu_clockev = apbt_setup_secondary_clock;
|
||||
|
||||
x86_platform.calibrate_tsc = intel_mid_calibrate_tsc;
|
||||
x86_platform.i8042_detect = intel_mid_i8042_detect;
|
||||
x86_init.timers.wallclock_init = intel_mid_rtc_init;
|
||||
x86_platform.get_nmi_reason = intel_mid_get_nmi_reason;
|
||||
|
||||
|
|
|
|||
|
|
@ -25,7 +25,8 @@
|
|||
* @fmt: format string.
|
||||
* ... variadic argument list.
|
||||
*/
|
||||
static void __init imr_self_test_result(int res, const char *fmt, ...)
|
||||
static __printf(2, 3)
|
||||
void __init imr_self_test_result(int res, const char *fmt, ...)
|
||||
{
|
||||
va_list vlist;
|
||||
|
||||
|
|
|
|||
|
|
@ -992,11 +992,12 @@ static void emit_relocs(int as_text, int use_real_mode)
|
|||
die("Segment relocations found but --realmode not specified\n");
|
||||
|
||||
/* Order the relocations for more efficient processing */
|
||||
sort_relocs(&relocs16);
|
||||
sort_relocs(&relocs32);
|
||||
#if ELF_BITS == 64
|
||||
sort_relocs(&relocs32neg);
|
||||
sort_relocs(&relocs64);
|
||||
#else
|
||||
sort_relocs(&relocs16);
|
||||
#endif
|
||||
|
||||
/* Print the relocations */
|
||||
|
|
|
|||
|
|
@ -983,7 +983,11 @@ static int __init i8042_pnp_init(void)
|
|||
#if defined(__ia64__)
|
||||
return -ENODEV;
|
||||
#else
|
||||
pr_info("PNP: No PS/2 controller found. Probing ports directly.\n");
|
||||
pr_info("PNP: No PS/2 controller found.\n");
|
||||
if (x86_platform.legacy.i8042 !=
|
||||
X86_LEGACY_I8042_EXPECTED_PRESENT)
|
||||
return -ENODEV;
|
||||
pr_info("Probing ports directly.\n");
|
||||
return 0;
|
||||
#endif
|
||||
}
|
||||
|
|
@ -1070,8 +1074,8 @@ static int __init i8042_platform_init(void)
|
|||
|
||||
#ifdef CONFIG_X86
|
||||
u8 a20_on = 0xdf;
|
||||
/* Just return if pre-detection shows no i8042 controller exist */
|
||||
if (!x86_platform.i8042_detect())
|
||||
/* Just return if platform does not have i8042 controller */
|
||||
if (x86_platform.legacy.i8042 == X86_LEGACY_I8042_PLATFORM_ABSENT)
|
||||
return -ENODEV;
|
||||
#endif
|
||||
|
||||
|
|
|
|||
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