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30 lines
982 B
Diff
30 lines
982 B
Diff
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From 43cd446fe9bcba67a7d7312b14004e9063343a89 Mon Sep 17 00:00:00 2001
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From: Christian Prochaska <christian.prochaska@genode-labs.com>
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Date: Wed, 28 Aug 2013 19:53:23 +0200
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Subject: [PATCH 12/15] Flush the TLB after idle operation
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While a CPU executes the idle thread, it receives no cross-CPU TLB flush
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requests. Therefore, the TLB needs to get flushed when leaving the idle
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thread to compensate for any missed flush requests.
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Fixes ssumpf/foc#9.
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---
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kernel/fiasco/src/kern/kernel_thread.cpp | 1 +
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1 file changed, 1 insertion(+)
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diff --git a/kernel/fiasco/src/kern/kernel_thread.cpp b/kernel/fiasco/src/kern/kernel_thread.cpp
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index 348fde9c..7e4a0d31 100644
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--- a/kernel/fiasco/src/kern/kernel_thread.cpp
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+++ b/kernel/fiasco/src/kern/kernel_thread.cpp
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@@ -182,6 +182,7 @@ Kernel_thread::idle_op()
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arch_tickless_idle(cpu);
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Mem_space::enable_tlb(cpu);
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+ Mem_unit::tlb_flush();
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Rcu::leave_idle(cpu);
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Timer_tick::enable(cpu);
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}
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--
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2.11.0
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