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kern: implement revised IPI/SGI semantics

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This commit is contained in:
Michael Scire 2022-03-22 23:02:10 -07:00 • committed by SciresM
parent 9d89835ff8
commit ff07ba4201
9 changed files with 103 additions and 20 deletions
libraries/libmesosphere/source
kern_k_thread.cpp

10
libraries/libmesosphere/source/kern_k_thread.cpp
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@ -481,12 +481,16 @@ namespace ams::kern {
/* Ensure that the thread is not executing on any core. */
if (m_parent != nullptr) {
/* Wait for the thread to not be current on any core. */
for (size_t i = 0; i < cpu::NumCores; ++i) {
KThread *core_thread;
do {
core_thread = Kernel::GetScheduler(i).GetSchedulerCurrentThread();
} while (core_thread == this);
}
/* Ensure that all cores are synchronized at this point. */
cpu::SynchronizeCores(m_parent->GetPhysicalCoreMask());
}
/* Close the thread. */
@ -724,11 +728,7 @@ namespace ams::kern {
}
/* Translate the virtual affinity mask to a physical one. */
while (v_affinity_mask != 0) {
const u64 next = __builtin_ctzll(v_affinity_mask);
v_affinity_mask &= ~(1ul << next);
p_affinity_mask |= (1ul << cpu::VirtualToPhysicalCoreMap[next]);
}
p_affinity_mask = cpu::ConvertVirtualCoreMaskToPhysical(v_affinity_mask);
/* If we haven't disabled migration, perform an affinity change. */
if (m_num_core_migration_disables == 0) {