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author | Thiago Jung Bauermann <bauerman@linux.vnet.ibm.com> | 2016-12-19 16:22:45 -0800 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2016-12-20 09:48:44 -0800 |
commit | ab6b1d1fc4aae6b8bd6fb1422405568094c9b40f (patch) | |
tree | 8812fe405fb1a1275bfa6581f2f74f0869ee0981 /arch/powerpc/include/asm/ima.h | |
parent | d158847ae89a25615f3d8757ad8c6f50fc816db5 (diff) | |
download | linux-ab6b1d1fc4aae6b8bd6fb1422405568094c9b40f.tar.bz2 |
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/include/asm/ima.h')
-rw-r--r-- | arch/powerpc/include/asm/ima.h | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/ima.h b/arch/powerpc/include/asm/ima.h index d5a72dd9b499..2313bdface34 100644 --- a/arch/powerpc/include/asm/ima.h +++ b/arch/powerpc/include/asm/ima.h @@ -1,6 +1,8 @@ #ifndef _ASM_POWERPC_IMA_H #define _ASM_POWERPC_IMA_H +struct kimage; + int ima_get_kexec_buffer(void **addr, size_t *size); int ima_free_kexec_buffer(void); @@ -10,4 +12,18 @@ void remove_ima_buffer(void *fdt, int chosen_node); static inline void remove_ima_buffer(void *fdt, int chosen_node) {} #endif +#ifdef CONFIG_IMA_KEXEC +int arch_ima_add_kexec_buffer(struct kimage *image, unsigned long load_addr, + size_t size); + +int setup_ima_buffer(const struct kimage *image, void *fdt, int chosen_node); +#else +static inline int setup_ima_buffer(const struct kimage *image, void *fdt, + int chosen_node) +{ + remove_ima_buffer(fdt, chosen_node); + return 0; +} +#endif /* CONFIG_IMA_KEXEC */ + #endif /* _ASM_POWERPC_IMA_H */ |