From c1eb8ec5f5fe107c881574c6516321c22b922925 Mon Sep 17 00:00:00 2001 From: Michael Kerrisk Date: Mon, 19 Jan 2015 16:02:03 +0100 Subject: [PATCH] s390_pci_mmio_write.2: srcfix Signed-off-by: Michael Kerrisk --- man2/s390_pci_mmio_write.2 | 11 +++++------ 1 file changed, 5 insertions(+), 6 deletions(-) diff --git a/man2/s390_pci_mmio_write.2 b/man2/s390_pci_mmio_write.2 index 4757be251..9fb1ce75e 100644 --- a/man2/s390_pci_mmio_write.2 +++ b/man2/s390_pci_mmio_write.2 @@ -57,13 +57,13 @@ bytes size. These system calls must be used instead of the simple assignment or data transfer operations that are used to access the PCI MMIO -memory areas mapped to the user space on the Linux on System z -platform. +memory areas mapped to the user space on the Linux on System z platform. The address specified by the .IR mmio_addr parameter must belong to a PCI MMIO memory page mapping in the user address space, and the data being written or read must not cross a -page boundary. The +page boundary. +The .IR length parameter value cannot be greater than the page size. .SH RETURN VALUE @@ -91,9 +91,8 @@ Invalid parameter value. .SH VERSIONS These system calls are available since Linux 3.19. .SH CONFORMING TO -This Linux-specific system call is available only on the s390 -architecture. The required PCI support is available beginning with -System z EC12. +This Linux-specific system call is available only on the s390 architecture. +The required PCI support is available beginning with System z EC12. .SH NOTES Glibc does not provide a wrapper for this system call, use .BR syscall (2)