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| author | Idan Horowitz <idan.horowitz@gmail.com> | 2021-12-19 19:36:42 +0200 |
|---|---|---|
| committer | Brian Gianforcaro <b.gianfo@gmail.com> | 2021-12-22 00:02:36 -0800 |
| commit | 5f4a67434cdd1c9b85e925a8815130b585bd548c (patch) | |
| tree | d9164c2814d8b38bacc557afcc942ccf03a193bf /Kernel/Interrupts/APIC.cpp | |
| parent | fccd0432a13b17a85cea3dbd48ee7999159f31a9 (diff) | |
| download | serenity-5f4a67434cdd1c9b85e925a8815130b585bd548c.zip | |
Kernel: Move userspace virtual address range base to 0x10000
Now that the shared bottom 2 MiB virtual address mappings are gone
userspace can use lower virtual addresses.
Diffstat (limited to 'Kernel/Interrupts/APIC.cpp')
| -rw-r--r-- | Kernel/Interrupts/APIC.cpp | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/Kernel/Interrupts/APIC.cpp b/Kernel/Interrupts/APIC.cpp index 4efc9d007b..a73f4ff3bf 100644 --- a/Kernel/Interrupts/APIC.cpp +++ b/Kernel/Interrupts/APIC.cpp @@ -333,6 +333,7 @@ UNMAP_AFTER_INIT void APIC::setup_ap_boot_environment() // * aps_to_enable u32 values for ap_cpu_init_stacks // * aps_to_enable u32 values for ap_cpu_init_processor_info_array constexpr u64 apic_startup_region_base = 0x8000; + VERIFY(apic_startup_region_base + apic_ap_start_size < USER_RANGE_BASE); auto apic_startup_region = create_identity_mapped_region(PhysicalAddress(apic_startup_region_base), Memory::page_round_up(apic_ap_start_size + (2 * aps_to_enable * sizeof(u32)))); memcpy(apic_startup_region->vaddr().as_ptr(), reinterpret_cast<const void*>(apic_ap_start), apic_ap_start_size); |