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| author | Thiago Jung Bauermann <bauerman@linux.ibm.com> | 2019-08-06 07:49:18 +0300 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2019-08-09 15:52:10 +0300 |
| commit | ae7eb82a92fae4d255a0caa9f7c0f99e3babfec1 (patch) | |
| tree | 437ed5313f25e22610f994171ecc7a355ba62590 /include/linux/crash_dump.h | |
| parent | 284e21fab2cfcf90dacce565e0b12f29e5df00c1 (diff) | |
| download | linux-ae7eb82a92fae4d255a0caa9f7c0f99e3babfec1.tar.xz | |
fs/core/vmcore: Move sev_active() reference to x86 arch code
Secure Encrypted Virtualization is an x86-specific feature, so it shouldn't
appear in generic kernel code because it forces non-x86 architectures to
define the sev_active() function, which doesn't make a lot of sense.
To solve this problem, add an x86 elfcorehdr_read() function to override
the generic weak implementation. To do that, it's necessary to make
read_from_oldmem() public so that it can be used outside of vmcore.c.
Also, remove the export for sev_active() since it's only used in files that
won't be built as modules.
Signed-off-by: Thiago Jung Bauermann <bauerman@linux.ibm.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Lianbo Jiang <lijiang@redhat.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20190806044919.10622-6-bauerman@linux.ibm.com
Diffstat (limited to 'include/linux/crash_dump.h')
| -rw-r--r-- | include/linux/crash_dump.h | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/include/linux/crash_dump.h b/include/linux/crash_dump.h index f774c5eb9e3c..4664fc1871de 100644 --- a/include/linux/crash_dump.h +++ b/include/linux/crash_dump.h @@ -115,4 +115,18 @@ static inline int vmcore_add_device_dump(struct vmcoredd_data *data) return -EOPNOTSUPP; } #endif /* CONFIG_PROC_VMCORE_DEVICE_DUMP */ + +#ifdef CONFIG_PROC_VMCORE +ssize_t read_from_oldmem(char *buf, size_t count, + u64 *ppos, int userbuf, + bool encrypted); +#else +static inline ssize_t read_from_oldmem(char *buf, size_t count, + u64 *ppos, int userbuf, + bool encrypted) +{ + return -EOPNOTSUPP; +} +#endif /* CONFIG_PROC_VMCORE */ + #endif /* LINUX_CRASHDUMP_H */ |