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| author | Konstantin Belousov <kib@FreeBSD.org> | 2024-11-21 19:40:18 +0000 |
|---|---|---|
| committer | Konstantin Belousov <kib@FreeBSD.org> | 2024-11-21 22:05:28 +0000 |
| commit | a03957a706a05bb0c2f627183b19d84f6d96dbb7 (patch) | |
| tree | 1c8248636118844c12a67c01fe4f7081b203c537 | |
| parent | 38e3125d6df98919983ed800471673ff0e5c2337 (diff) | |
| download | src-a03957a706a05bb0c2f627183b19d84f6d96dbb7.tar.gz src-a03957a706a05bb0c2f627183b19d84f6d96dbb7.zip | |
efirt: mark dynamic region executing the RT code with the TDP_EFIRT flag
Reviewed by: markj
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
Differential revision: https://reviews.freebsd.org/D47694
| -rw-r--r-- | sys/dev/efidev/efirt.c | 8 | ||||
| -rw-r--r-- | sys/sys/proc.h | 2 |
2 files changed, 8 insertions, 2 deletions
diff --git a/sys/dev/efidev/efirt.c b/sys/dev/efidev/efirt.c index 2d45b4d6ac66..37b46ec38dad 100644 --- a/sys/dev/efidev/efirt.c +++ b/sys/dev/efidev/efirt.c @@ -309,6 +309,9 @@ efi_enter(void) fpu_kern_leave(td, NULL); mtx_unlock(&efi_lock); PMAP_UNLOCK(curpmap); + } else { + MPASS((td->td_pflags & TDP_EFIRT) == 0); + td->td_pflags |= TDP_EFIRT; } return (error); } @@ -319,10 +322,13 @@ efi_leave(void) struct thread *td; pmap_t curpmap; + td = curthread; + MPASS((td->td_pflags & TDP_EFIRT) == 0); + td->td_pflags &= ~TDP_EFIRT; + efi_arch_leave(); curpmap = &curproc->p_vmspace->vm_pmap; - td = curthread; fpu_kern_leave(td, NULL); mtx_unlock(&efi_lock); PMAP_UNLOCK(curpmap); diff --git a/sys/sys/proc.h b/sys/sys/proc.h index a69eecbb4661..69b6c7a61da0 100644 --- a/sys/sys/proc.h +++ b/sys/sys/proc.h @@ -560,7 +560,7 @@ enum { #define TDP_RESETSPUR 0x04000000 /* Reset spurious page fault history. */ #define TDP_NERRNO 0x08000000 /* Last errno is already in td_errno */ #define TDP_UIOHELD 0x10000000 /* Current uio has pages held in td_ma */ -#define TDP_UNUSED0 0x20000000 /* UNUSED */ +#define TDP_EFIRT 0x20000000 /* In firmware (EFI RT) call */ #define TDP_EXECVMSPC 0x40000000 /* Execve destroyed old vmspace */ #define TDP_SIGFASTPENDING 0x80000000 /* Pending signal due to sigfastblock */ |