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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2016-09-13 12:52:45 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2016-09-13 12:52:45 -0700 |
| commit | 5924bbecd0267d87c24110cbe2041b5075173a25 (patch) | |
| tree | 7a58d293d6e75e75efc769eb38d21b0ef48d2446 /arch | |
| parent | fda67514e444533b44106362baddca1cdbbba836 (diff) | |
| parent | c291b015158577be533dd5a959dfc09bab119eed (diff) | |
| download | linux-5924bbecd0267d87c24110cbe2041b5075173a25.tar.bz2 | |
Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 fixes from Ingo Molnar:
"Three fixes:
- AMD microcode loading fix with randomization
- an lguest tooling fix
- and an APIC enumeration boundary condition fix"
* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/apic: Fix num_processors value in case of failure
tools/lguest: Don't bork the terminal in case of wrong args
x86/microcode/AMD: Fix load of builtin microcode with randomized memory
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/x86/kernel/apic/apic.c | 4 | ||||
| -rw-r--r-- | arch/x86/kernel/cpu/microcode/amd.c | 13 |
2 files changed, 13 insertions, 4 deletions
diff --git a/arch/x86/kernel/apic/apic.c b/arch/x86/kernel/apic/apic.c index 50c95af0f017..f3e9b2df4b16 100644 --- a/arch/x86/kernel/apic/apic.c +++ b/arch/x86/kernel/apic/apic.c @@ -2093,7 +2093,6 @@ int generic_processor_info(int apicid, int version) return -EINVAL; } - num_processors++; if (apicid == boot_cpu_physical_apicid) { /* * x86_bios_cpu_apicid is required to have processors listed @@ -2116,10 +2115,13 @@ int generic_processor_info(int apicid, int version) pr_warning("APIC: Package limit reached. Processor %d/0x%x ignored.\n", thiscpu, apicid); + disabled_cpus++; return -ENOSPC; } + num_processors++; + /* * Validate version */ diff --git a/arch/x86/kernel/cpu/microcode/amd.c b/arch/x86/kernel/cpu/microcode/amd.c index b816971f5da4..620ab06bcf45 100644 --- a/arch/x86/kernel/cpu/microcode/amd.c +++ b/arch/x86/kernel/cpu/microcode/amd.c @@ -54,6 +54,7 @@ static LIST_HEAD(pcache); */ static u8 *container; static size_t container_size; +static bool ucode_builtin; static u32 ucode_new_rev; static u8 amd_ucode_patch[PATCH_MAX_SIZE]; @@ -281,18 +282,22 @@ static bool __init load_builtin_amd_microcode(struct cpio_data *cp, void __init load_ucode_amd_bsp(unsigned int family) { struct cpio_data cp; + bool *builtin; void **data; size_t *size; #ifdef CONFIG_X86_32 data = (void **)__pa_nodebug(&ucode_cpio.data); size = (size_t *)__pa_nodebug(&ucode_cpio.size); + builtin = (bool *)__pa_nodebug(&ucode_builtin); #else data = &ucode_cpio.data; size = &ucode_cpio.size; + builtin = &ucode_builtin; #endif - if (!load_builtin_amd_microcode(&cp, family)) + *builtin = load_builtin_amd_microcode(&cp, family); + if (!*builtin) cp = find_ucode_in_initrd(); if (!(cp.data && cp.size)) @@ -373,7 +378,8 @@ void load_ucode_amd_ap(void) return; /* Add CONFIG_RANDOMIZE_MEMORY offset. */ - cont += PAGE_OFFSET - __PAGE_OFFSET_BASE; + if (!ucode_builtin) + cont += PAGE_OFFSET - __PAGE_OFFSET_BASE; eax = cpuid_eax(0x00000001); eq = (struct equiv_cpu_entry *)(cont + CONTAINER_HDR_SZ); @@ -439,7 +445,8 @@ int __init save_microcode_in_initrd_amd(void) container = cont_va; /* Add CONFIG_RANDOMIZE_MEMORY offset. */ - container += PAGE_OFFSET - __PAGE_OFFSET_BASE; + if (!ucode_builtin) + container += PAGE_OFFSET - __PAGE_OFFSET_BASE; eax = cpuid_eax(0x00000001); eax = ((eax >> 8) & 0xf) + ((eax >> 20) & 0xff); |