src/sys/dev/xen/console, branch main

machine/stdarg.h -> sys/stdarg.h

2025-06-11T16:39:02Z

Switch to using sys/stdarg.h for va_list type and va_* builtins. Make an attempt to insert the include in a sensible place. Where style(9) was followed this is easy, where it was ignored, aim for the first block of sys/*.h headers and don't get too fussy or try to fix other style bugs. Reviewed by: imp Exp-run by: antoine (PR 286274) Pull Request: https://github.com/freebsd/freebsd-src/pull/1595

x86/xen: introduce non-hypercall based emergency print

2024-02-22T10:08:03Z

The current xc_printf() function uses an hypercall in order to send character buffers to the hypervisor for it to print on the hypervisor console (if the hypervisor is configured to print such messages). This requires the hypercall page to be initialized, which is extra work and can go wrong. On x86 instead of using the console IO hypercall use the debug console IO port, also called "port E9 hack". This allows sending characters to Xen using an outb instruction, without any initialization required. Keep the previous hypervisor based implementation by using the weak attribute, which allows each architecture to provide an alternate (arch-specific) implementation. Sponsored by: Cloud Software Group Reviewed by: markj Differential revision: https://reviews.freebsd.org/D43929

sys: Automated cleanup of cdefs and other formatting

2023-11-27T05:24:00Z

Apply the following automated changes to try to eliminate no-longer-needed sys/cdefs.h includes as well as now-empty blank lines in a row. Remove /^#if.*\n#endif.*\n#include\s+.*\n/ Remove /\n+#include\s+.*\n+#if.*\n#endif.*\n+/ Remove /\n+#if.*\n#endif.*\n+/ Remove /^#if.*\n#endif.*\n/ Remove /\n+#include\s+\n#include\s+/ Remove /\n+#include\s+\n#include\s+/ Remove /\n+#include\s+\n#include\s+/ Sponsored by: Netflix

sys: Remove $FreeBSD$: one-line .c pattern

2023-08-16T17:54:36Z

Remove /^[\s*]*__FBSDID$"\$FreeBSD\$"$;?\s*\n/

xen: Remove unused devclass arguments to DRIVER_MODULE.

2022-05-06T22:46:58Z

xen: switch to use headers in contrib

2022-02-07T09:11:56Z

These headers originate with the Xen project and shouldn't be mixed with the main portion of the FreeBSD kernel. Notably they shouldn't be the target of clean-up commits. Switch to use the headers in sys/contrib/xen. Reviewed by: royger

xen: plug some of set-but-not-used vars

2021-12-15T13:46:17Z

Sponsored by: Rubicon Communications, LLC ("Netgate")

xen: create VM_MEMATTR_XEN for Xen memory mappings

2021-07-28T15:27:02Z

The requirements for pages shared with Xen/other VMs may vary from architecture to architecture. As such create a macro which various architectures can use. Remove a use of PAT_WRITE_BACK in xenstore.c. This is a x86-ism which shouldn't have been present in a common area. Original idea: Julien Grall , 2014-01-14 06:44:08 Approach suggested by: royger Reviewed by: royger, mhorne Differential Revision: https://reviews.freebsd.org/D29351

xen: remove x86-ism from Xen common code

2021-03-01T12:33:01Z

PAT_WRITE_BACK is x86-only, whereas sys/dev/xen could be shared between multiple architectures. Reviewed by: royger Differential Revision: https://reviews.freebsd.org/D28831

tty: convert tty_lock_assert to tty_assert_locked to hide lock type

2020-04-17T18:34:49Z

A later change, currently being iterated on in D24459, will in-fact change the lock type to an sx so that TTY drivers can sleep on it if they need to. Committing this ahead of time to make the review in question a little more palatable. tty_lock_assert() is unfortunately still needed for now in two places to make sure that the tty lock has not been recursed upon, for those scenarios where it's supplied by the TTY driver and possibly a mutex that is allowed to recurse. Suggested by: markj