diff options
| author | John Baldwin <jhb@FreeBSD.org> | 2023-08-25 19:33:00 +0000 |
|---|---|---|
| committer | John Baldwin <jhb@FreeBSD.org> | 2023-10-11 15:09:52 +0000 |
| commit | e6dbc4dfd1444a38647fb55e9238112291b9e4cd (patch) | |
| tree | b588ee8cc1d5b2eb5a8b2e844623b14d3232738f | |
| parent | e4a51dbf5d8d75766519a8f775f30b5026227072 (diff) | |
| download | src-e6dbc4dfd1444a38647fb55e9238112291b9e4cd.tar.gz src-e6dbc4dfd1444a38647fb55e9238112291b9e4cd.zip | |
efirt: Move comment about fpu_kern_enter to where it is called
Reviewed by: imp, kib, andrew, markj
Differential Revision: https://reviews.freebsd.org/D41576
(cherry picked from commit 8173fa60ddb7e9a805dec9fef7bf07e74ae4144d)
| -rw-r--r-- | sys/amd64/amd64/efirt_machdep.c | 5 | ||||
| -rw-r--r-- | sys/dev/efidev/efirt.c | 5 |
2 files changed, 5 insertions, 5 deletions
diff --git a/sys/amd64/amd64/efirt_machdep.c b/sys/amd64/amd64/efirt_machdep.c index 4c6ee4ee88a2..5734e0300df8 100644 --- a/sys/amd64/amd64/efirt_machdep.c +++ b/sys/amd64/amd64/efirt_machdep.c @@ -280,11 +280,6 @@ fail: * reason to bother with the virtual map, and no need to add a * complexity into loader. * - * The fpu_kern_enter() call allows firmware to use FPU, as mandated - * by the specification. In particular, CR0.TS bit is cleared. Also - * it enters critical section, giving us neccessary protection against - * context switch. - * * There is no need to disable interrupts around the change of %cr3, * the kernel mappings are correct, while we only grabbed the * userspace portion of VA. Interrupts handlers must not access diff --git a/sys/dev/efidev/efirt.c b/sys/dev/efidev/efirt.c index 851385eeb8d6..29f51b78eb25 100644 --- a/sys/dev/efidev/efirt.c +++ b/sys/dev/efidev/efirt.c @@ -269,6 +269,11 @@ efi_rt_ok(void) return (0); } +/* + * The fpu_kern_enter() call in allows firmware to use FPU, as + * mandated by the specification. It also enters a critical section, + * giving us neccessary protection against context switches. + */ static int efi_enter(void) { |