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path: root/Kernel/Interrupts/APIC.cpp
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2022-04-05Kernel: Move create_identity_mapped_region() to MemoryManagerAndreas Kling
This had no business being in RegionTree, since RegionTree doesn't track identity-mapped regions anyway. (We allow *any* address to be identity mapped, not just the ones that are part of the RegionTree's range.)
2022-04-05Kernel: Remove unused ShouldDeallocateVirtualRange parametersAndreas Kling
Since there is no separate virtual range allocator anymore, this is no longer used for anything.
2022-04-03Kernel: Make VM allocation atomic for userspace regionsAndreas Kling
This patch move AddressSpace (the per-process memory manager) to using the new atomic "place" APIs in RegionTree as well, just like we did for MemoryManager in the previous commit. This required updating quite a few places where VM allocation and actually committing a Region object to the AddressSpace were separated by other code. All you have to do now is call into AddressSpace once and it'll take care of everything for you.
2022-04-03LibWeb: Make VM allocation atomic for kernel regionsAndreas Kling
Instead of first allocating the VM range, and then inserting a region with that range into the MM region tree, we now do both things in a single atomic operation: - RegionTree::place_anywhere(Region&, size, alignment) - RegionTree::place_specifically(Region&, address, size) To reduce the number of things we do while locking the region tree, we also require callers to provide a constructed Region object.
2022-04-01Everywhere: Run clang-formatIdan Horowitz
2022-02-21Kernel: Fix allocating identity-mapped APIC memory on x86_64Tom
We were not allocating enough memory due to using u32 instead of FlatPtr for each AP's stack pointer.
2022-02-21Kernel: Implement booting all CPU cores on x86_64Tom
The AP boot code was partially adapted to build on x86_64 but didn't properly jump into 64 bit mode. Furthermore, the APIC code was still using 32 bit pointers. Fixes #12662
2022-02-03Kernel: Stop using the make<T> factory method in the KernelIdan Horowitz
As make<T> is infallible, it really should not be used anywhere in the Kernel. Instead replace with fallible `new (nothrow)` calls, that will eventually be error-propagated.
2022-01-30Kernel: Remove unnecessary includes from Thread.hAndreas Kling
...and deal with the fallout by adding missing includes everywhere.
2022-01-13Kernel: Make map_typed() & map_typed_writable() fallible using ErrorOrIdan Horowitz
This mostly just moved the problem, as a lot of the callers are not capable of propagating the errors themselves, but it's a step in the right direction.
2021-12-28Kernel: Propagate overflow errors from Memory::page_round_upGuilherme Goncalves
Fixes #11402.
2021-12-22Kernel: Move userspace virtual address range base to 0x10000Idan Horowitz
Now that the shared bottom 2 MiB virtual address mappings are gone userspace can use lower virtual addresses.
2021-12-22Kernel: Setup APIC AP cores boot environment before init_stage2Idan Horowitz
Since this range is mapped in already in the kernel page directory, we can initialize it before jumping into the first kernel process which lets us avoid mapping in the range into init_stage2's address space. This brings us half-way to removing the shared bottom 2 MiB mapping in every process, leaving only the Prekernel.
2021-12-14Kernel: Allow switching to IOAPIC mode even without enabling SMPLiav A
This small change allows to use the IOAPIC by default without to enable SMP mode, which emulates Uni-Processor setup with IOAPIC instead of using the PIC. This opens the opportunity to utilize other types of interrupts like MSI and MSI-X interrupts.
2021-11-08Kernel: Replace KResult and KResultOr<T> with Error and ErrorOr<T>Andreas Kling
We now use AK::Error and AK::ErrorOr<T> in both kernel and userspace! This was a slightly tedious refactoring that took a long time, so it's not unlikely that some bugs crept in. Nevertheless, it does pass basic functionality testing, and it's just real nice to finally see the same pattern in all contexts. :^)
2021-10-03Kernel: Use `operator ""sv` in all purpose() implementationsBrian Gianforcaro
Previously there was a mix of returning plain strings and returning explicit string views using `operator ""sv`. This change switches them all to standardized on `operator ""sv` as it avoids a call to strlen.
2021-10-01Kernel: Move x86 IO instructions code into the x86 specific folderLiav A
2021-09-12Kernel: Move ACPI and BIOS code into the new Firmware directoryLiav A
This will somwhat help unify them also under the same SysFS directory in the commit. Also, it feels much more like this change reflects the reality that both ACPI and the BIOS are part of the firmware on x86 computers.
2021-09-08Kernel/ACPI: Return Optional container after table searchLiav A
This is a better pattern than returning a PhysicalAddress with a zero value, so the code is more understandable now.
2021-09-06Kernel: Make kernel region allocators return KResultOr<NOP<Region>>Andreas Kling
This expands the reach of error propagation greatly throughout the kernel. Sadly, it also exposes the fact that we're allocating (and doing other fallible things) in constructors all over the place. This patch doesn't attempt to address that of course. That's work for our future selves.
2021-09-04Kernel: Add x2APIC supportTom
This allows addressing all cores on more modern processors. For now, we still have a hardcoded limit of 64 due to s_processors being a static array.
2021-08-29Kernel: Rename Spinlock::is_owned_by_current_thread()Andreas Kling
...to is_owned_by_current_processor(). As Tom pointed out, this is much more accurate. :^)
2021-08-29Kernel: {Mutex,Spinlock}::own_lock() => is_locked_by_current_thread()Andreas Kling
Rename these API's to make it more clear what they are checking.
2021-08-23Kernel: Rename Processor::id() => current_id()Andreas Kling
And let id() be the non-static version that gives you the ID of a Processor object.
2021-08-15Kernel: Make Kernel::VMObject allocation functions return KResultOrsin-ack
This makes for nicer handling of errors compared to checking whether a RefPtr is null. Additionally, this will give way to return different types of errors in the future.
2021-08-08Everywhere: Replace AK::Singleton => SingletonAndreas Kling
2021-08-06Kernel: Add convenience values to the Memory::Region::Access enumAndreas Kling
Instead of `Memory::Region::Access::Read | Memory::Region::AccessWrite` you can now say `Memory::Region::Access::ReadWrite`.
2021-08-06Kernel: Rename a very long enum to ShouldDeallocateVirtualRangeAndreas Kling
ShouldDeallocateVirtualMemoryVirtualRange was a bit on the long side.
2021-08-06Kernel: Make identity mapping mechanism used during AP boot non-genericAndreas Kling
When booting AP's, we identity map a region at 0x8000 while doing the initial bringup sequence. This is the only thing in the kernel that requires an identity mapping, yet we had a bunch of generic API's and a dedicated VirtualRangeAllocator in every PageDirectory for this purpose. This patch simplifies the situation by moving the identity mapping logic to the AP boot code and removing the generic API's.
2021-08-06Kernel: Move Kernel/Memory/ code into Kernel::Memory namespaceAndreas Kling
2021-08-06Kernel: Rename Kernel/VM/ to Kernel/Memory/Andreas Kling
This directory isn't just about virtual memory, it's about all kinds of memory management.
2021-07-11Kernel: Make various T::class_name() and similar return StringViewAndreas Kling
Instead of returning char const*, we can also give you a StringView.
2021-07-04Kernel: Hide the implementation detail that MSRs use two registersGunnar Beutner
When retrieving and setting x86 MSRs two registers are required. The existing setter and getter for the MSR class made this implementation detail visible to the caller. This changes the setter and getter to use u64 instead.
2021-06-24Kernel: Move special sections into Sections.hHendiadyoin1
This also removes a lot of CPU.h includes infavor for Sections.h
2021-06-24Kernel: Pull apart CPU.hHendiadyoin1
This does not add any functional changes
2021-06-17Kernel/Interrupts: Return boolean on whether we handled the interruptLiav A
If we are in a shared interrupt handler, the called handlers might indicate it was not their interrupt, so we should not increment the call counter of these handlers.
2021-05-05Kernel: Add Processor::is_bootstrap_processor() function, and use it. (#6871)Brian Gianforcaro
The variety of checks for Processor::id() == 0 could use some assistance in the readability department. This change adds a new function to represent this check, and replaces the comparison everywhere it's used.
2021-05-03Kernel: Remove unused header includes from various files.Brian Gianforcaro
Found while browsing code with CLion.
2021-04-22Everything: Move to SPDX license identifiers in all files.Brian Gianforcaro
SPDX License Identifiers are a more compact / standardized way of representing file license information. See: https://spdx.dev/resources/use/#identifiers This was done with the `ambr` search and replace tool. ambr --no-parent-ignore --key-from-file --rep-from-file key.txt rep.txt *
2021-03-21Kernel::CPU: Move headers into common directoryHendiadyoin1
Alot of code is shared between i386/i686/x86 and x86_64 and a lot probably will be used for compatability modes. So we start by moving the headers into one Directory. We will probalby be able to move some cpp files aswell.
2021-03-12Kernel: Convert klog() => AK::Format in APICAndreas Kling
2021-02-28Kernel: Fix GenericInterruptHandler problems with virtual functionsTom
Because registering and unregistering interrupt handlers triggers calls to virtual functions, we can't do this in the constructor and destructor. Fixes #5539
2021-02-23Everywhere: Rename ASSERT => VERIFYAndreas Kling
(...and ASSERT_NOT_REACHED => VERIFY_NOT_REACHED) Since all of these checks are done in release builds as well, let's rename them to VERIFY to prevent confusion, as everyone is used to assertions being compiled out in release. We can introduce a new ASSERT macro that is specifically for debug checks, but I'm doing this wholesale conversion first since we've accumulated thousands of these already, and it's not immediately obvious which ones are suitable for ASSERT.
2021-02-19Kernel: Slap UNMAP_AFTER_INIT on a whole bunch of functionsAndreas Kling
There's no real system here, I just added it to various functions that I don't believe we ever want to call after initialization has finished. With these changes, we're able to unmap 60 KiB of kernel text after init. :^)
2021-02-14Kernel: Assert if rounding-up-to-page-size would wrap around to 0Andreas Kling
If we try to align a number above 0xfffff000 to the next multiple of the page size (4 KiB), it would wrap around to 0. This is most likely never what we want, so let's assert if that happens.
2021-02-14Kernel: Use PANIC() in a bunch of places :^)Andreas Kling
2021-02-14Kernel: Remove user/kernel flags from RegionAndreas Kling
Now that we no longer need to support the signal trampolines being user-accessible inside the kernel memory range, we can get rid of the "kernel" and "user-accessible" flags on Region and simply use the address of the region to determine whether it's kernel or user. This also tightens the page table mapping code, since it can now set user-accessibility based solely on the virtual address of a page.
2021-01-27Kernel: Use the CPU# as logical apic idTom
2021-01-27Kernel: Make Processor::id a static functionTom
This eliminates the window between calling Processor::current and the member function where a thread could be moved to another processor. This is generally not as big of a concern as with Processor::current_thread, but also slightly more light weight.
2021-01-26Meta: Split debug defines into multiple headers.asynts
The following script was used to make these changes: #!/bin/bash set -e tmp=$(mktemp -d) echo "tmp=$tmp" find Kernel \( -name '*.cpp' -o -name '*.h' \) | sort > $tmp/Kernel.files find . \( -path ./Toolchain -prune -o -path ./Build -prune -o -path ./Kernel -prune \) -o \( -name '*.cpp' -o -name '*.h' \) -print | sort > $tmp/EverythingExceptKernel.files cat $tmp/Kernel.files | xargs grep -Eho '[A-Z0-9_]+_DEBUG' | sort | uniq > $tmp/Kernel.macros cat $tmp/EverythingExceptKernel.files | xargs grep -Eho '[A-Z0-9_]+_DEBUG' | sort | uniq > $tmp/EverythingExceptKernel.macros comm -23 $tmp/Kernel.macros $tmp/EverythingExceptKernel.macros > $tmp/Kernel.unique comm -1 $tmp/Kernel.macros $tmp/EverythingExceptKernel.macros > $tmp/EverythingExceptKernel.unique cat $tmp/Kernel.unique | awk '{ print "#cmakedefine01 "$1 }' > $tmp/Kernel.header cat $tmp/EverythingExceptKernel.unique | awk '{ print "#cmakedefine01 "$1 }' > $tmp/EverythingExceptKernel.header for macro in $(cat $tmp/Kernel.unique) do cat $tmp/Kernel.files | xargs grep -l $macro >> $tmp/Kernel.new-includes ||: done cat $tmp/Kernel.new-includes | sort > $tmp/Kernel.new-includes.sorted for macro in $(cat $tmp/EverythingExceptKernel.unique) do cat $tmp/Kernel.files | xargs grep -l $macro >> $tmp/Kernel.old-includes ||: done cat $tmp/Kernel.old-includes | sort > $tmp/Kernel.old-includes.sorted comm -23 $tmp/Kernel.new-includes.sorted $tmp/Kernel.old-includes.sorted > $tmp/Kernel.includes.new comm -13 $tmp/Kernel.new-includes.sorted $tmp/Kernel.old-includes.sorted > $tmp/Kernel.includes.old comm -12 $tmp/Kernel.new-includes.sorted $tmp/Kernel.old-includes.sorted > $tmp/Kernel.includes.mixed for file in $(cat $tmp/Kernel.includes.new) do sed -i -E 's/#include <AK\/Debug\.h>/#include <Kernel\/Debug\.h>/' $file done for file in $(cat $tmp/Kernel.includes.mixed) do echo "mixed include in $file, requires manual editing." done
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