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author | Ingo Molnar <mingo@kernel.org> | 2016-04-29 09:55:04 (GMT) |
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committer | Ingo Molnar <mingo@kernel.org> | 2016-04-29 09:55:04 (GMT) |
commit | ffc5fce9a96303c3e16232a6bdf8827af6adb604 (patch) | |
tree | c8c46b2af268d27e07ee7fad8c283fa7d31b1fb7 /arch | |
parent | b2eafe890d4a09bfa63ab31ff018d7d6bb8cfefc (diff) | |
parent | 1bdb8970392a68489b469c3a330a1adb5ef61beb (diff) | |
download | linux-ffc5fce9a96303c3e16232a6bdf8827af6adb604.tar.xz |
Merge branch 'x86/urgent' into x86/asm, to refresh the tree
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'arch')
-rw-r--r-- | arch/x86/kernel/apic/vector.c | 3 | ||||
-rw-r--r-- | arch/x86/kernel/head_32.S | 6 | ||||
-rw-r--r-- | arch/x86/mm/setup_nx.c | 5 | ||||
-rw-r--r-- | arch/x86/xen/spinlock.c | 6 |
4 files changed, 11 insertions, 9 deletions
diff --git a/arch/x86/kernel/apic/vector.c b/arch/x86/kernel/apic/vector.c index 26d3ccc..a5e400a 100644 --- a/arch/x86/kernel/apic/vector.c +++ b/arch/x86/kernel/apic/vector.c @@ -256,7 +256,8 @@ static void clear_irq_vector(int irq, struct apic_chip_data *data) struct irq_desc *desc; int cpu, vector; - BUG_ON(!data->cfg.vector); + if (!data->cfg.vector) + return; vector = data->cfg.vector; for_each_cpu_and(cpu, data->domain, cpu_online_mask) diff --git a/arch/x86/kernel/head_32.S b/arch/x86/kernel/head_32.S index 6770865..6f8902b 100644 --- a/arch/x86/kernel/head_32.S +++ b/arch/x86/kernel/head_32.S @@ -389,12 +389,6 @@ default_entry: /* Make changes effective */ wrmsr - /* - * And make sure that all the mappings we set up have NX set from - * the beginning. - */ - orl $(1 << (_PAGE_BIT_NX - 32)), pa(__supported_pte_mask + 4) - enable_paging: /* diff --git a/arch/x86/mm/setup_nx.c b/arch/x86/mm/setup_nx.c index 8bea847..f65a33f 100644 --- a/arch/x86/mm/setup_nx.c +++ b/arch/x86/mm/setup_nx.c @@ -32,8 +32,9 @@ early_param("noexec", noexec_setup); void x86_configure_nx(void) { - /* If disable_nx is set, clear NX on all new mappings going forward. */ - if (disable_nx) + if (boot_cpu_has(X86_FEATURE_NX) && !disable_nx) + __supported_pte_mask |= _PAGE_NX; + else __supported_pte_mask &= ~_PAGE_NX; } diff --git a/arch/x86/xen/spinlock.c b/arch/x86/xen/spinlock.c index 9e2ba5c..f42e78d 100644 --- a/arch/x86/xen/spinlock.c +++ b/arch/x86/xen/spinlock.c @@ -27,6 +27,12 @@ static bool xen_pvspin = true; static void xen_qlock_kick(int cpu) { + int irq = per_cpu(lock_kicker_irq, cpu); + + /* Don't kick if the target's kicker interrupt is not initialized. */ + if (irq == -1) + return; + xen_send_IPI_one(cpu, XEN_SPIN_UNLOCK_VECTOR); } |