Date: Fri, 19 Feb 2021 20:51:19 GMT From: John Baldwin <jhb@FreeBSD.org> To: doc-committers@FreeBSD.org, dev-commits-doc-all@FreeBSD.org Subject: git: f2d4f23887 - main - Update the note on PAE to reflect support for PAE in GENERIC. Message-ID: <202102192051.11JKpJ68066850@gitrepo.freebsd.org>
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The branch main has been updated by jhb: URL: https://cgit.FreeBSD.org/doc/commit/?id=f2d4f238874e238a5567be91d942675b4671598c commit f2d4f238874e238a5567be91d942675b4671598c Author: John Baldwin <jhb@FreeBSD.org> AuthorDate: 2021-02-19 20:51:01 +0000 Commit: John Baldwin <jhb@FreeBSD.org> CommitDate: 2021-02-19 20:51:01 +0000 Update the note on PAE to reflect support for PAE in GENERIC. The PAE kernel now only determines if device drivers can avoid the use of bounce buffers for DMA. Reviewed by: kib, emaste Differential Revision: https://reviews.freebsd.org/D28777 --- website/content/en/releases/13.0R/hardware.adoc | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/website/content/en/releases/13.0R/hardware.adoc b/website/content/en/releases/13.0R/hardware.adoc index bd3ab7be4a..4aacc6dc98 100644 --- a/website/content/en/releases/13.0R/hardware.adoc +++ b/website/content/en/releases/13.0R/hardware.adoc @@ -51,7 +51,7 @@ There are a wide variety of motherboards available for this architecture. Mother Symmetric multi-processor (SMP) systems are generally supported including multi-core and SMT. -FreeBSD will take advantage of Physical Address Extensions (PAE) support on CPUs that support this feature. A kernel with the `PAE` feature enabled will detect memory above 4 gigabytes and allow it to be used by the system. This feature places constraints on the device drivers and other features of FreeBSD which may be used; consult the {{< manpage "pae" "4">}} manual page for more details. +FreeBSD will take advantage of Physical Address Extensions (PAE) support on CPUs that support this feature. The default kernel supports memory up to 24 gigabytes, but device drivers will use bounce buffers to DMA buffers in memory above 4 gigabytes. A custom kernel with the `PAE` feature enabled will avoid the use of bounce buffers, but disables a few incompatible device drivers. This feature places constraints on other features of FreeBSD which may be used; consult the {{< manpage "pae" "4">}} manual page for more details. FreeBSD will generally run on i386-based laptops, desktops, and servers. Support for certain hardware features such as sound, graphics, wireless, and power management may vary
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