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5307 commits

Author SHA1 Message Date
Gunnar Beutner
f56ee10a13 Kernel: Hand out 64-bit addresses to userspace 2021-07-18 17:31:13 +02:00
Liav A
5938d882d8 Kernel: Use a different kernel load address for x86_64 
Co-authored-by: Gunnar Beutner <gbeutner@serenityos.org>
 2021-07-18 17:31:13 +02:00
Gunnar Beutner
7e94b090fe Kernel: Introduce basic pre-kernel environment 
This implements a simple bootloader that is capable of loading ELF64
kernel images. It does this by using QEMU/GRUB to load the kernel image
from disk and pass it to our bootloader as a Multiboot module.

The bootloader then parses the ELF image and sets it up appropriately.
The kernel's entry point is a C++ function with architecture-native
code.

Co-authored-by: Liav A <liavalb@gmail.com>
 2021-07-18 17:31:13 +02:00
Gunnar Beutner
357ddd393e Kernel: Make allocate_randomized() work for 64-bit addresses 
The odds of finding a suitable address in 1000 attempts were not in our
favor given the size of the 64-bit address space.
 2021-07-18 17:31:13 +02:00
Gunnar Beutner
f0c4941beb Kernel: Fix 64-bit address truncation in MemoryManager::ensure_pte() 2021-07-18 17:31:13 +02:00
Gunnar Beutner
98f8ecd9d2 Kernel: Split debug symbols into a separate file 
This speeds up the boot process considerably when specifying the kernel
image via -initrd.
 2021-07-18 17:31:13 +02:00
Gunnar Beutner
b708b23b13 Kernel: Add support for kernel addresses other than 3-4GB 2021-07-18 17:31:13 +02:00
Gunnar Beutner
6c6b778e2e Kernel: Support 64-bit addresses for kernel thread stacks 2021-07-18 17:31:13 +02:00
Gunnar Beutner
c878054682 Kernel: Make VirtualAddress::page_base() work with 64-bit addresses 2021-07-18 17:31:13 +02:00
Gunnar Beutner
679ae6af81 Kernel: Remove some more hardcoded addresses 2021-07-18 17:31:13 +02:00
Gunnar Beutner
7c3bfde8fd Kernel: Make SCHEDULER_DEBUG work on x86_64 2021-07-18 17:31:13 +02:00
Gunnar Beutner
741ca5477c Kernel: Fix {read,write}_gs_ptr() for 64-bit addresses 2021-07-18 17:31:13 +02:00
Gunnar Beutner
294b918e9b Kernel: Ignore KUBSAN symbols in the kernel symbol map 2021-07-18 17:31:13 +02:00
Sahan Fernando
2845c6753e Kernel: Clean up VirtIOGPU class interfaces 2021-07-18 19:58:17 +04:30
Sahan Fernando
d9330c42fa Kernel: Replace VirtIOGPU reinterpret casts with AK::BinaryBufferWriter 2021-07-18 19:58:17 +04:30
Sahan Fernando
04226f0c0a Kernel: Improve debug prints for VirtIOGPU device config events 2021-07-18 19:58:17 +04:30
Sahan Fernando
4dddc56ad9 Kernel: Rename VirtIOGPU/VirtIOGPU.cpp to VirtIOGPU/GPU.cpp 2021-07-18 19:58:17 +04:30
Sahan Fernando
1c77f80676 Kernel: Put VirtIOGPU related types into a namespace 2021-07-18 19:58:17 +04:30
Andreas Kling
7791f7b9e6 Kernel/TmpFS: Remove some unnecessary includes 2021-07-18 14:29:27 +02:00
Andreas Kling
61e17ed590 Kernel/TmpFS: Use IntrusiveList and KString for OOM safety 
This patch moves TmpFS to using OOM-safe data types for storing
directory children.
 2021-07-18 14:29:27 +02:00
Tom
ae8472f9ca Kernel: Fix blocking relock of the big_lock while unlocking other Lock 
When a Thread is being unblocked and we need to re-lock the process
big_lock and re-locking blocks again, then we may end up in
Thread::block again while still servicing the original lock's
Thread::block. So permit recursion as long as it's only the big_lock
that we block on again.

Fixes #8822
 2021-07-18 13:08:51 +02:00
Andreas Kling
df5fa8aa39 Kernel/ProcFS: Remove redundant ProcFS& member from ProcFSInode 2021-07-18 02:24:26 +02:00
Andreas Kling
d298de5e09 Kernel/SysFS: Remove redundant SysFS& member from SysFSInode 2021-07-18 02:23:22 +02:00
Andreas Kling
d3cf4cd8f0 Kernel/DevFS: Remove redundant DevFS& member from DevFSInode 
All Inode subclasses can get to their FileSystem via Inode::fs().
 2021-07-18 02:21:34 +02:00
Andreas Kling
bd37840cf5 Kernel/Ext2FS: Surface Vector allocation failures in block allocation 2021-07-18 02:15:56 +02:00
Andreas Kling
1f18558ee2 Kernel: Make FileSystem::root_inode() return a plain Inode& 
All file system classes are expected to keep their root Inode object
in memory, so this function can safely return an Inode&.
 2021-07-18 01:53:04 +02:00
Andreas Kling
58c6d30f6a Kernel/Ext2FS: Cache the root inode in a member variable 
We often get queried for the root inode, and it will always be cached
in memory anyway, so let's make Ext2FS::root_inode() fast by keeping
the root inode in a dedicated member variable.
 2021-07-18 01:53:04 +02:00
Andreas Kling
9457d83986 Kernel: Rename Locker => MutexLocker 2021-07-18 01:53:04 +02:00
Andreas Kling
ab50a1480f Kernel/USB: Remove unneeded friend declaration in SysFSUSBBusDirectory 2021-07-18 01:53:04 +02:00
Andreas Kling
b975a74a1d Kernel/USB: Move USB bus information from /proc to /sys 
This patch moves all the USB data from /proc/bus/usb to /sys/bus/usb.
 2021-07-18 00:55:16 +02:00
Andreas Kling
6fae2a5f9e Kernel/ProcFS: Remove unused ProcFSExposedComponent::entries_count() 2021-07-17 23:50:01 +02:00
Andreas Kling
d686d2ef18 Kernel/SysFS: Remove unused SysFSComponent::entries_count() 2021-07-17 23:50:01 +02:00
Andreas Kling
2da0581fd2 Kernel: Replace "folder" => "directory" everywhere 
Folders are a GUI concept. File systems have directories.
 2021-07-17 23:50:00 +02:00
Andreas Kling
b8d6c3722d Kernel: Remove Inode::directory_entry_count() 
This was only used in one place: VirtualFileSystem::rmdir(), and that
has now been converted to a simple directory traversal.
 2021-07-17 22:36:04 +02:00
Andreas Kling
d1bbe8b652 Kernel: Count remaining children in VirtualFileSystem::rmdir() manually 
To count the remaining children, we simply need to traverse the
directory and increment a counter. No need for a custom virtual that
all file systems have to implement. :^)
 2021-07-17 22:34:43 +02:00
Andreas Kling
a3f58a5003 Kernel/DevFS: Use KString for DevFSDeviceInode::m_name 2021-07-17 22:17:07 +02:00
Andreas Kling
0d89cfcd9a Kernel/DevFS: Use KString for DevFSLinkInode::m_link 2021-07-17 22:11:41 +02:00
Andreas Kling
cd4d73e19e Kernel: Add an API for turning a UserOrKernelBuffer into a KString 2021-07-17 22:07:49 +02:00
Andreas Kling
dd37d0a327 Kernel/DevFS: Use KString for DevFSLinkInode::m_name 2021-07-17 21:40:32 +02:00
Andreas Kling
61c1937d02 Kernel/DevFS: Make DevFSInode::name() return StringView 2021-07-17 21:36:54 +02:00
Andreas Kling
6766efff9c Kernel: Make Inode::create_child() take the name as a StringView 
No sense in forcing callers to construct a String. One more small step
towards not using String in the kernel.
 2021-07-17 21:32:59 +02:00
Andreas Kling
9359f7801f Kernel/DevFS: Remove some unnecessary inode locking 
Unless we're accessing mutex-guarded metadata, there's no need to
acquire the inode lock.

The file system ID or inode index of a constructed inode will never
change, for example.
 2021-07-17 21:26:47 +02:00
Andreas Kling
3b805a57e6 Kernel: Rename Inode::m_lock => m_inode_lock 
This makes file system code much easier to read since it was hard when
both the file system and inode locks were called "m_lock".
 2021-07-17 21:17:39 +02:00
Andreas Kling
63e1423830 Kernel: Remove unused Inode::is_shared_vmobject() 2021-07-17 21:11:12 +02:00
Andreas Kling
cee9528168 Kernel: Rename Lock to Mutex 
Let's be explicit about what kind of lock this is meant to be.
 2021-07-17 21:10:32 +02:00
Andreas Kling
a803c4026c Kernel: Make FileSystem::class_name() return a StringView 2021-07-17 20:59:48 +02:00
Brian Gianforcaro
c0987453e6 Kernel: Remove double RedBlackTree lookup in VM/Space region removal 
We should never request a regions removal that we don't currently
own. We currently assert this everywhere else by all callers.

Instead lets just push the assert down into the RedBlackTree removal
and assume that we will always successfully remove the region.
 2021-07-17 16:22:59 +02:00
Brian Gianforcaro
d879709ec7 Kernel: Convert the PhysicalPage bool parameter to an enum 2021-07-17 18:38:28 +04:30
Brian Gianforcaro
eb282ad410 Kernel: Declare VM/RangeAllocator trivial destructor as default 
This is a clang tidy recommendation.
 2021-07-17 13:02:09 +02:00
Brian Gianforcaro
24bd664980 Kernel: Remove stale include from VM/RangeAllocator.cpp 
This was left over after the latest big refactor of the VM subsystem.
 2021-07-17 13:02:09 +02:00