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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
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:
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.
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
runtime services.

6
stand/man/loader.8
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@ -24,7 +24,7 @@
.\"
.\" $FreeBSD$
.\"
.Dd May 15, 2018
.Dd July 30, 2018
.Dt LOADER 8
.Os
.Sh NAME
@ -588,6 +588,10 @@ explicitly.
Other variables are used to override kernel tunable parameters.
The following tunables are available:
.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
Limit the amount of physical memory the system will use.
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;
rt_disabled = 0;
TUNABLE_INT_FETCH("efi.rt_disabled", &rt_disabled);
TUNABLE_INT_FETCH("efi.rt.disabled", &rt_disabled);
if (rt_disabled == 1)
return (0);
mtx_init(&efi_lock, "efi", NULL, MTX_DEF);