diff options
| -rw-r--r-- | sys/arm/arm/mem.c | 8 | ||||
| -rw-r--r-- | sys/dev/mem/memdev.c | 2 | ||||
| -rw-r--r-- | sys/i386/i386/mem.c | 4 | ||||
| -rw-r--r-- | sys/mips/mips/mem.c | 2 | ||||
| -rw-r--r-- | sys/sparc64/sparc64/mem.c | 2 |
5 files changed, 7 insertions, 11 deletions
diff --git a/sys/arm/arm/mem.c b/sys/arm/arm/mem.c index 460a004..58b0d25 100644 --- a/sys/arm/arm/mem.c +++ b/sys/arm/arm/mem.c @@ -55,6 +55,7 @@ __FBSDID("$FreeBSD$"); #include <sys/mutex.h> #include <sys/proc.h> #include <sys/signalvar.h> +#include <sys/sx.h> #include <sys/systm.h> #include <sys/uio.h> @@ -72,6 +73,9 @@ MALLOC_DEFINE(M_MEMDESC, "memdesc", "memory range descriptors"); struct mem_range_softc mem_range_softc; +static struct sx tmppt_lock; +SX_SYSINIT(tmppt, &tmppt_lock, "mem4map"); + /* ARGSUSED */ int memrw(struct cdev *dev, struct uio *uio, int flags) @@ -82,8 +86,6 @@ memrw(struct cdev *dev, struct uio *uio, int flags) int error = 0; vm_offset_t addr, eaddr; - GIANT_REQUIRED; - while (uio->uio_resid > 0 && error == 0) { iov = uio->uio_iov; if (iov->iov_len == 0) { @@ -109,6 +111,7 @@ memrw(struct cdev *dev, struct uio *uio, int flags) } if (!address_valid) return (EINVAL); + sx_xlock(&tmppt_lock); pmap_kenter((vm_offset_t)_tmppt, v); o = (int)uio->uio_offset & PAGE_MASK; c = (u_int)(PAGE_SIZE - ((int)iov->iov_base & PAGE_MASK)); @@ -116,6 +119,7 @@ memrw(struct cdev *dev, struct uio *uio, int flags) c = min(c, (u_int)iov->iov_len); error = uiomove((caddr_t)&_tmppt[o], (int)c, uio); pmap_qremove((vm_offset_t)_tmppt, 1); + sx_xunlock(&tmppt_lock); continue; } else if (dev2unit(dev) == CDEV_MINOR_KMEM) { diff --git a/sys/dev/mem/memdev.c b/sys/dev/mem/memdev.c index 37bad15..c3d1af1 100644 --- a/sys/dev/mem/memdev.c +++ b/sys/dev/mem/memdev.c @@ -52,7 +52,7 @@ static struct cdev *memdev, *kmemdev; static struct cdevsw mem_cdevsw = { .d_version = D_VERSION, - .d_flags = D_MEM|D_NEEDGIANT, + .d_flags = D_MEM, .d_open = memopen, .d_read = memrw, .d_write = memrw, diff --git a/sys/i386/i386/mem.c b/sys/i386/i386/mem.c index 9c83f47..b036bd3 100644 --- a/sys/i386/i386/mem.c +++ b/sys/i386/i386/mem.c @@ -86,10 +86,6 @@ memrw(struct cdev *dev, struct uio *uio, int flags) int error = 0; vm_offset_t addr; - /* XXX UPS Why ? */ - GIANT_REQUIRED; - - if (dev2unit(dev) != CDEV_MINOR_MEM && dev2unit(dev) != CDEV_MINOR_KMEM) return EIO; diff --git a/sys/mips/mips/mem.c b/sys/mips/mips/mem.c index d40c424..08bb6b0 100644 --- a/sys/mips/mips/mem.c +++ b/sys/mips/mips/mem.c @@ -85,8 +85,6 @@ memrw(struct cdev *dev, struct uio *uio, int flags) cnt = 0; error = 0; - GIANT_REQUIRED; - pmap_page_init(&m); while (uio->uio_resid > 0 && !error) { iov = uio->uio_iov; diff --git a/sys/sparc64/sparc64/mem.c b/sys/sparc64/sparc64/mem.c index b78f705..50fe676 100644 --- a/sys/sparc64/sparc64/mem.c +++ b/sys/sparc64/sparc64/mem.c @@ -100,8 +100,6 @@ memrw(struct cdev *dev, struct uio *uio, int flags) error = 0; ova = 0; - GIANT_REQUIRED; - while (uio->uio_resid > 0 && error == 0) { iov = uio->uio_iov; if (iov->iov_len == 0) { |
