diff options
| author | Thiago Jung Bauermann <bauerman@linux.vnet.ibm.com> | 2016-12-19 16:22:45 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2016-12-20 09:48:44 -0800 |
| commit | ab6b1d1fc4aae6b8bd6fb1422405568094c9b40f (patch) | |
| tree | 8812fe405fb1a1275bfa6581f2f74f0869ee0981 /arch/powerpc/kernel/machine_kexec_file_64.c | |
| parent | d158847ae89a25615f3d8757ad8c6f50fc816db5 (diff) | |
| download | linux-ab6b1d1fc4aae6b8bd6fb1422405568094c9b40f.tar.gz linux-ab6b1d1fc4aae6b8bd6fb1422405568094c9b40f.tar.bz2 linux-ab6b1d1fc4aae6b8bd6fb1422405568094c9b40f.zip | |
powerpc: ima: send the kexec buffer to the next kernel
The IMA kexec buffer allows the currently running kernel to pass the
measurement list via a kexec segment to the kernel that will be kexec'd.
This is the architecture-specific part of setting up the IMA kexec
buffer for the next kernel. It will be used in the next patch.
Link: http://lkml.kernel.org/r/1480554346-29071-6-git-send-email-zohar@linux.vnet.ibm.com
Signed-off-by: Thiago Jung Bauermann <bauerman@linux.vnet.ibm.com>
Signed-off-by: Mimi Zohar <zohar@linux.vnet.ibm.com>
Acked-by: "Eric W. Biederman" <ebiederm@xmission.com>
Cc: Andreas Steffen <andreas.steffen@strongswan.org>
Cc: Dmitry Kasatkin <dmitry.kasatkin@gmail.com>
Cc: Josh Sklar <sklar@linux.vnet.ibm.com>
Cc: Dave Young <dyoung@redhat.com>
Cc: Vivek Goyal <vgoyal@redhat.com>
Cc: Baoquan He <bhe@redhat.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Stewart Smith <stewart@linux.vnet.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch/powerpc/kernel/machine_kexec_file_64.c')
| -rw-r--r-- | arch/powerpc/kernel/machine_kexec_file_64.c | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/arch/powerpc/kernel/machine_kexec_file_64.c b/arch/powerpc/kernel/machine_kexec_file_64.c index 29331fffad13..992c0d258e5d 100644 --- a/arch/powerpc/kernel/machine_kexec_file_64.c +++ b/arch/powerpc/kernel/machine_kexec_file_64.c @@ -210,6 +210,7 @@ int delete_fdt_mem_rsv(void *fdt, unsigned long start, unsigned long size) /* * setup_new_fdt - modify /chosen and memory reservation for the next kernel + * @image: kexec image being loaded. * @fdt: Flattened device tree for the next kernel. * @initrd_load_addr: Address where the next initrd will be loaded. * @initrd_len: Size of the next initrd, or 0 if there will be none. @@ -218,8 +219,9 @@ int delete_fdt_mem_rsv(void *fdt, unsigned long start, unsigned long size) * * Return: 0 on success, or negative errno on error. */ -int setup_new_fdt(void *fdt, unsigned long initrd_load_addr, - unsigned long initrd_len, const char *cmdline) +int setup_new_fdt(const struct kimage *image, void *fdt, + unsigned long initrd_load_addr, unsigned long initrd_len, + const char *cmdline) { int ret, chosen_node; const void *prop; @@ -329,7 +331,11 @@ int setup_new_fdt(void *fdt, unsigned long initrd_load_addr, } } - remove_ima_buffer(fdt, chosen_node); + ret = setup_ima_buffer(image, fdt, chosen_node); + if (ret) { + pr_err("Error setting up the new device tree.\n"); + return ret; + } ret = fdt_setprop(fdt, chosen_node, "linux,booted-from-kexec", NULL, 0); if (ret) { |