SCM_RIGHTS #146
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SCM_RIGHTS #146
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Add Intel microcode loading as per the Intel SDM, plus a wbinvd tip from Linux. We expect to get a intel-ucode.img in the Linux format (ASCII cpio archive). Building an iso with intel-ucode is supported by passing INTEL_UCODE=<path-to-intel-ucode.img> when doing make for your desired iso target. Tested on a KBL, Ivy Bridge. Signed-off-by: Pedro Falcato <[email protected]>
Remove all INFO() usages, and improve the coding style just a little bit. Signed-off-by: Pedro Falcato <[email protected]>
Right now, we're doing very early init - then parsing boot modules - and only then doing the microcode load for the BSP. This results in having possibly stale cpuid info that doesn't correspond to the current microcode. Fix that by reloading if cpu 0. This also handles re-running jump labels and alternatives. Signed-off-by: Pedro Falcato <[email protected]>
This msr stops us from seeing the whole cpuid for the CPU, in case we're Windows NT 4. We're not Windows NT 4. Signed-off-by: Pedro Falcato <[email protected]>
lock add on x86 has the exact full-serializing semantics we want for smp_mb, while being ~4x as fast as mfence. Signed-off-by: Pedro Falcato <[email protected]>
Signed-off-by: Pedro Falcato <[email protected]>
Signed-off-by: Pedro Falcato <[email protected]>
This is nicer and safer. Signed-off-by: Pedro Falcato <[email protected]>
Certain systems give you LAPIC structures with id 255. This is supposed to be interpreted as "does not exist" and skipped. While we're at it, check if we indeed can online the CPU (the firmware wasn't marked it unonlineable). Signed-off-by: Pedro Falcato <[email protected]>
We were doing map[] when we really can't do so, because of descriptor_size != sizeof(EFI_MEMORY_DESCRIPTOR). Such is life. Signed-off-by: Pedro Falcato <[email protected]>
Signed-off-by: Pedro Falcato <[email protected]>
Fix setgroups crashes when clearing it, in case c->groups is NULL (we don't have supplemental groups). Signed-off-by: Pedro Falcato <[email protected]>
MSI seems to be broken and untested. Don't enable it, for now. Signed-off-by: Pedro Falcato <[email protected]>
This should catch bad callers. Signed-off-by: Pedro Falcato <[email protected]>
Signed-off-by: Pedro Falcato <[email protected]>
Signed-off-by: Pedro Falcato <[email protected]>
Still a work in progress, but already much better than the old one. Signed-off-by: Pedro Falcato <[email protected]>
Signed-off-by: Pedro Falcato <[email protected]>
This patch adds MSI-X support and revamps IRQ allocation APIs for PCI drivers. New drivers should use pci_alloc_irqs + pci_install_irq. Signed-off-by: Pedro Falcato <[email protected]>
And while we're at it, revamp log messages with dev_*() helpers. Signed-off-by: Pedro Falcato <[email protected]>
This stops us from missing interrupts when multiple IRQ handlers are installed on a single edge-triggered irq line. Signed-off-by: Pedro Falcato <[email protected]>
Signed-off-by: Pedro Falcato <[email protected]>
Signed-off-by: Pedro Falcato <[email protected]>
Move a bunch of file_ops into inode_operations (new) and vm_obj_ops. This is merely the first step for unscrewing a bunch of problems with file_ops and making writing filesystems/fds easier and more ergonomic. Signed-off-by: Pedro Falcato <[email protected]>
After d_path started requiring a valid mount pointer, un_get_name started crashing the kernel. Add a few wrappers for it, and make AF_UNIX DTRT. Signed-off-by: Pedro Falcato <[email protected]>
Add getaffinity and setaffinity syscalls. They're still stubbed and we
don't actually properly support affinity yet. However, it's good enough
for _SC_NPROCESSORS_{ONLN,CONF}.
Signed-off-by: Pedro Falcato <[email protected]>
Normally, signal pending would mean we have a proper signal waiting for us. However, stuff like group stop and group exit set signal pending while not having a proper signal number or signal struct. This made sigtimedwait crash if the process exited mid-timedwait. Signed-off-by: Pedro Falcato <[email protected]>
Stopping on inode = 0 is wrong, because this is simply an ignored entry, not the end of the list. This repro'd in directories we were simply not able to delete, because they looked empty from getdirent's PoV, but not from elsewhere (open and ext2_dir_empty did the right thing). Fix it. Signed-off-by: Pedro Falcato <[email protected]>
UTIME_NOW was taking its clock value from a different clock domain (MONOTONIC) instead of REALTIME. For instance, UTIME_NOW after 30s of boottime would set the inode timestamp(s) to 01-01-1970, 00:00:30. Fix it. This fixes perl build problems. Signed-off-by: Pedro Falcato <[email protected]>
We can't assert that a page isn't locked, because another thread can validly grab the lock between the writepage's unlock and us checking. Signed-off-by: Pedro Falcato <[email protected]>
WIP Signed-off-by: Pedro Falcato <[email protected]>
Add basic SCM_RIGHTS support. Does not deal with reference cycles yet. Signed-off-by: Pedro Falcato <[email protected]>
Simple SCM_RIGHTS tests. Signed-off-by: Pedro Falcato <[email protected]>
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Fix the hack for d_invalidate and implement something that looks/is correct. Signed-off-by: Pedro Falcato <[email protected]>
Make them take better types (i.e don't take struct file in stat). Signed-off-by: Pedro Falcato <[email protected]>
Signed-off-by: Pedro Falcato <[email protected]>
Signed-off-by: Pedro Falcato <[email protected]>
Also add a d_path_under_root that returns NULL when the path is not under the current root. Unused, For Now(tm). Signed-off-by: Pedro Falcato <[email protected]>
Small helpers for getdirent implementations to use. Signed-off-by: Pedro Falcato <[email protected]>
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