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| author | Vasily Gorbik <gor@linux.ibm.com> | 2023-02-10 00:05:11 +0300 |
|---|---|---|
| committer | Heiko Carstens <hca@linux.ibm.com> | 2023-03-20 13:02:51 +0300 |
| commit | 557b19709da97bc93ea5cf61926ca05800c15a13 (patch) | |
| tree | f1213e5c5ba017bf3a3f490875cccb5614704793 /arch/s390/boot/boot.h | |
| parent | e4c31004d3348202d4bc0bcdf662bf9d9d3e11cb (diff) | |
| download | linux-557b19709da97bc93ea5cf61926ca05800c15a13.tar.xz | |
s390/kasan: move shadow mapping to decompressor
Since regular paging structs are initialized in decompressor already
move KASAN shadow mapping to decompressor as well. This helps to avoid
allocating KASAN required memory in 1 large chunk, de-duplicate paging
structs creation code and start the uncompressed kernel with KASAN
instrumentation right away. This also allows to avoid all pitfalls
accidentally calling KASAN instrumented code during KASAN initialization.
Acked-by: Heiko Carstens <hca@linux.ibm.com>
Reviewed-by: Alexander Gordeev <agordeev@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Diffstat (limited to 'arch/s390/boot/boot.h')
| -rw-r--r-- | arch/s390/boot/boot.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/arch/s390/boot/boot.h b/arch/s390/boot/boot.h index 2b4048106418..872963c8a0ab 100644 --- a/arch/s390/boot/boot.h +++ b/arch/s390/boot/boot.h @@ -32,6 +32,13 @@ struct vmlinux_info { unsigned long init_mm_off; unsigned long swapper_pg_dir_off; unsigned long invalid_pg_dir_off; +#ifdef CONFIG_KASAN + unsigned long kasan_early_shadow_page_off; + unsigned long kasan_early_shadow_pte_off; + unsigned long kasan_early_shadow_pmd_off; + unsigned long kasan_early_shadow_pud_off; + unsigned long kasan_early_shadow_p4d_off; +#endif }; void startup_kernel(void); |