iv/linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

parisc: Mark jump_table naturally aligned

Browse Source 
The jump_table stores two 32-bit words and one 32- (on 32-bit kernel)
or one 64-bit word (on 64-bit kernel).
Ensure that the last word is always 64-bit aligned on a 64-bit kernel
by aligning the whole structure on sizeof(long).

Signed-off-by: Helge Deller <deller@gmx.de>
Cc: stable@vger.kernel.org   # v6.0+
This commit is contained in:
Helge Deller 2023-11-20 23:14:39 +01:00
parent 33f806da2d
commit 07eecff8ae
1 changed files with 6 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
arch/parisc/include/asm/jump_label.h
View File

@ -15,10 +15,12 @@ static __always_inline bool arch_static_branch(struct static_key *key, bool bran
asm_volatile_goto("1:\n\t"
"nop\n\t"
".pushsection __jump_table, \"aw\"\n\t"
".align %1\n\t"
".word 1b - ., %l[l_yes] - .\n\t"
__stringify(ASM_ULONG_INSN) " %c0 - .\n\t"
".popsection\n\t"
: : "i" (&((char *)key)[branch]) : : l_yes);
: : "i" (&((char *)key)[branch]), "i" (sizeof(long))
: : l_yes);
return false;
l_yes:
@ -30,10 +32,12 @@ static __always_inline bool arch_static_branch_jump(struct static_key *key, bool
asm_volatile_goto("1:\n\t"
"b,n %l[l_yes]\n\t"
".pushsection __jump_table, \"aw\"\n\t"
".align %1\n\t"
".word 1b - ., %l[l_yes] - .\n\t"
__stringify(ASM_ULONG_INSN) " %c0 - .\n\t"
".popsection\n\t"
: : "i" (&((char *)key)[branch]) : : l_yes);
: : "i" (&((char *)key)[branch]), "i" (sizeof(long))
: : l_yes);
return false;
l_yes: