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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
parent 7454507467
commit bb0be4de8e
9 changed files with 103 additions and 20 deletions
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11
libraries/libmesosphere/source/kern_k_capabilities.cpp
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@@ -27,7 +27,11 @@ namespace ams::kern {
m_program_type = 0;
/* Initial processes may run on all cores. */
m_core_mask = cpu::VirtualCoreMask;
constexpr u64 VirtMask = cpu::VirtualCoreMask;
constexpr u64 PhysMask = cpu::ConvertVirtualCoreMaskToPhysical(VirtMask);
m_core_mask = VirtMask;
m_phys_core_mask = PhysMask;
/* Initial processes may use any user priority they like. */
m_priority_mask = ~0xFul;
@@ -60,7 +64,7 @@ namespace ams::kern {
Result KCapabilities::SetCorePriorityCapability(const util::BitPack32 cap) {
/* We can't set core/priority if we've already set them. */
R_UNLESS(m_core_mask == 0, svc::ResultInvalidArgument());
R_UNLESS(m_core_mask == 0, svc::ResultInvalidArgument());
R_UNLESS(m_priority_mask == 0, svc::ResultInvalidArgument());
/* Validate the core/priority. */
@@ -81,6 +85,9 @@ namespace ams::kern {
}
MESOSPHERE_ASSERT((m_core_mask & cpu::VirtualCoreMask) == m_core_mask);
/* Set physical core mask. */
m_phys_core_mask = cpu::ConvertVirtualCoreMaskToPhysical(m_core_mask);
/* Set priority mask. */
for (auto prio = min_prio; prio <= max_prio; prio++) {
m_priority_mask |= (1ul << prio);