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Follow up to r336919 and r336921: s/efi.rt_disabled/efi.rt.disabled/

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The latter matches the rest of the tree better [0]. The UPDATING entry has
been updated to reflect this, and the new tunable is now documented in
loader(8) [1].

Reported by:	imp [0], Shawn Webb [1]
This commit is contained in:
Kyle Evans 2018-07-30 18:13:20 +00:00
parent dfa6eec2b1
commit 1ddc8a8e68
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=336924
3 changed files with 7 additions and 3 deletions
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2
UPDATING
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@ -34,7 +34,7 @@ NOTE TO PEOPLE WHO THINK THAT FreeBSD 12.x IS SLOW:
20180730: 20180730:
amd64/GENERIC now has EFI runtime services, EFIRT, enabled by default. amd64/GENERIC now has EFI runtime services, EFIRT, enabled by default.
This should have no effect if the kernel is booted via BIOS/legacy boot. This should have no effect if the kernel is booted via BIOS/legacy boot.
EFIRT may be disabled via a loader tunable, efi.rt_disabled, if a system EFIRT may be disabled via a loader tunable, efi.rt.disabled, if a system
has a buggy firmware that prevents a successful boot due to use of has a buggy firmware that prevents a successful boot due to use of
runtime services. runtime services.

6
stand/man/loader.8
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@ -24,7 +24,7 @@
.\" .\"
.\" $FreeBSD$ .\" $FreeBSD$
.\" .\"
.Dd May 15, 2018 .Dd July 30, 2018
.Dt LOADER 8 .Dt LOADER 8
.Os .Os
.Sh NAME .Sh NAME
@ -588,6 +588,10 @@ explicitly.
Other variables are used to override kernel tunable parameters. Other variables are used to override kernel tunable parameters.
The following tunables are available: The following tunables are available:
.Bl -tag -width Va .Bl -tag -width Va
.It Va efi.rt.disabled
Disable UEFI runtime services in the kernel, if applicable.
Runtime services are only available and used if the kernel is booted in a UEFI
environment.
.It Va hw.physmem .It Va hw.physmem
Limit the amount of physical memory the system will use. Limit the amount of physical memory the system will use.
By default the size is in bytes, but the By default the size is in bytes, but the

2
sys/dev/efidev/efirt.c
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@ -136,7 +136,7 @@ efi_init(void)
int rt_disabled; int rt_disabled;
rt_disabled = 0; rt_disabled = 0;
TUNABLE_INT_FETCH("efi.rt_disabled", &rt_disabled); TUNABLE_INT_FETCH("efi.rt.disabled", &rt_disabled);
if (rt_disabled == 1) if (rt_disabled == 1)
return (0); return (0);
mtx_init(&efi_lock, "efi", NULL, MTX_DEF); mtx_init(&efi_lock, "efi", NULL, MTX_DEF);