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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2014-05-02 23:04:52 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2014-05-02 23:04:52 +0200 |
| commit | 0845e11c2a40acab29606ebfe3aa2d23e188f0f5 (patch) | |
| tree | 508e57a9d2e91228362f4b071607bba08ad7e160 /arch | |
| parent | Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm (diff) | |
| parent | x86/vsmp: Fix irq routing (diff) | |
| download | linux-0845e11c2a40acab29606ebfe3aa2d23e188f0f5.tar.xz linux-0845e11c2a40acab29606ebfe3aa2d23e188f0f5.zip | |
Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 fixes from Peter Anvin:
"Two very small changes: one fix for the vSMP Foundation platform, and
one to help LLVM not choke on options it doesn't understand (although
it probably should)"
* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/vsmp: Fix irq routing
x86: LLVMLinux: Wrap -mno-80387 with cc-option
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/x86/Makefile | 4 | ||||
| -rw-r--r-- | arch/x86/kernel/vsmp_64.c | 11 |
2 files changed, 13 insertions, 2 deletions
diff --git a/arch/x86/Makefile b/arch/x86/Makefile index d1b7c377a234..ce6ad7e6a7d7 100644 --- a/arch/x86/Makefile +++ b/arch/x86/Makefile @@ -83,7 +83,9 @@ else KBUILD_CFLAGS += -m64 # Don't autogenerate traditional x87, MMX or SSE instructions - KBUILD_CFLAGS += -mno-mmx -mno-sse -mno-80387 -mno-fp-ret-in-387 + KBUILD_CFLAGS += -mno-mmx -mno-sse + KBUILD_CFLAGS += $(call cc-option,-mno-80387) + KBUILD_CFLAGS += $(call cc-option,-mno-fp-ret-in-387) # Use -mpreferred-stack-boundary=3 if supported. KBUILD_CFLAGS += $(call cc-option,-mpreferred-stack-boundary=3) diff --git a/arch/x86/kernel/vsmp_64.c b/arch/x86/kernel/vsmp_64.c index f6584a90aba3..5edc34b5b951 100644 --- a/arch/x86/kernel/vsmp_64.c +++ b/arch/x86/kernel/vsmp_64.c @@ -26,6 +26,9 @@ #define TOPOLOGY_REGISTER_OFFSET 0x10 +/* Flag below is initialized once during vSMP PCI initialization. */ +static int irq_routing_comply = 1; + #if defined CONFIG_PCI && defined CONFIG_PARAVIRT /* * Interrupt control on vSMPowered systems: @@ -101,6 +104,10 @@ static void __init set_vsmp_pv_ops(void) #ifdef CONFIG_SMP if (cap & ctl & BIT(8)) { ctl &= ~BIT(8); + + /* Interrupt routing set to ignore */ + irq_routing_comply = 0; + #ifdef CONFIG_PROC_FS /* Don't let users change irq affinity via procfs */ no_irq_affinity = 1; @@ -218,7 +225,9 @@ static void vsmp_apic_post_init(void) { /* need to update phys_pkg_id */ apic->phys_pkg_id = apicid_phys_pkg_id; - apic->vector_allocation_domain = fill_vector_allocation_domain; + + if (!irq_routing_comply) + apic->vector_allocation_domain = fill_vector_allocation_domain; } void __init vsmp_init(void) |