From: "Liam R. Howlett" <Liam.Howlett@Oracle.com>
To: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@redhat.com>, Borislav Petkov <bp@alien8.de>,
"H. Peter Anvin" <hpa@zytor.com>,
x86@kernel.org, "Peter Zijlstra (Intel)" <peterz@infradead.org>,
Nadav Amit <namit@vmware.com>,
linux-kernel@vger.kernel.org
Subject: Out of tree module build errors since v4.20-rc1
Date: Wed, 21 Nov 2018 15:56:34 -0500 [thread overview]
Message-ID: <20181121205633.oxksehwjg5a2q6rt@oracle.com> (raw)
My out of tree driver build is now reporting issues with the jump table:
./include/linux/jump_label.h: In function ‘jump_entry_code’:
./include/linux/jump_label.h:153:14: error: dereferencing pointer to incomplete type ‘const struct jump_entry’
return entry->code;
^~
./include/linux/jump_label.h: In function ‘jump_entry_set_init’:
./include/linux/jump_label.h:180:7: error: dereferencing pointer to incomplete type ‘struct jump_entry’
entry->key |= 2;
^~
./include/linux/jump_label.h: At top level:
./include/linux/jump_label.h:212:26: error: array type has incomplete element type ‘struct jump_entry’
extern struct jump_entry __start___jump_table[];
^~~~~~~~~~~~~~~~~~~~
./include/linux/jump_label.h:213:26: error: array type has incomplete element type ‘struct jump_entry’
extern struct jump_entry __stop___jump_table[];
^~~~~~~~~~~~~~~~~~~
This happens in v4.20-rc3 as well, so I bisected between v4.19 to
v4.20-rc1 which resulted in the following commit:
b34006c4258c9c86597b6b7123d6a9a3513d6cd7 is the first bad commit
commit b34006c4258c9c86597b6b7123d6a9a3513d6cd7
Author: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Date: Tue Sep 18 23:51:41 2018 -0700
x86/jump_table: Use relative references
Initially I assumed this was my own fault, but my module does not have
these issues when using v4.19. Is there anything I should try/change in
my module makefile, includes, etc to support this relative reference
code?
Thank you,
Liam
next reply other threads:[~2018-11-21 20:57 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-11-21 20:56 Liam R. Howlett [this message]
2018-11-21 21:12 ` Nadav Amit
2018-11-21 21:14 ` Liam R. Howlett
2018-11-21 21:44 ` Ard Biesheuvel
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