diff options
| author | Sebastian Andrzej Siewior <bigeasy@linutronix.de> | 2019-11-28 20:58:05 +0100 |
|---|---|---|
| committer | Catalin Marinas <catalin.marinas@arm.com> | 2019-12-06 12:14:45 +0000 |
| commit | 0492747c72a3db0425a234abafb763c5b28c845d (patch) | |
| tree | 971ffafe7f1468781a0b969fe0ae51f69655ca20 /arch/arm64/kernel/smp.c | |
| parent | df325e05a682e9c624f471835c35bd3f870d5e8c (diff) | |
arm64: KVM: Invoke compute_layout() before alternatives are applied
compute_layout() is invoked as part of an alternative fixup under
stop_machine(). This function invokes get_random_long() which acquires a
sleeping lock on -RT which can not be acquired in this context.
Rename compute_layout() to kvm_compute_layout() and invoke it before
stop_machine() applies the alternatives. Add a __init prefix to
kvm_compute_layout() because the caller has it, too (and so the code can be
discarded after boot).
Reviewed-by: James Morse <james.morse@arm.com>
Acked-by: Marc Zyngier <maz@kernel.org>
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Diffstat (limited to 'arch/arm64/kernel/smp.c')
| -rw-r--r-- | arch/arm64/kernel/smp.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/arm64/kernel/smp.c b/arch/arm64/kernel/smp.c index dc9fe879c279..02d41eae3da8 100644 --- a/arch/arm64/kernel/smp.c +++ b/arch/arm64/kernel/smp.c @@ -31,6 +31,7 @@ #include <linux/of.h> #include <linux/irq_work.h> #include <linux/kexec.h> +#include <linux/kvm_host.h> #include <asm/alternative.h> #include <asm/atomic.h> @@ -39,6 +40,7 @@ #include <asm/cputype.h> #include <asm/cpu_ops.h> #include <asm/daifflags.h> +#include <asm/kvm_mmu.h> #include <asm/mmu_context.h> #include <asm/numa.h> #include <asm/pgtable.h> @@ -408,6 +410,8 @@ static void __init hyp_mode_check(void) "CPU: CPUs started in inconsistent modes"); else pr_info("CPU: All CPU(s) started at EL1\n"); + if (IS_ENABLED(CONFIG_KVM_ARM_HOST)) + kvm_compute_layout(); } void __init smp_cpus_done(unsigned int max_cpus) |