diff options
| author | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2015-10-26 06:39:46 +0900 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2015-10-26 06:39:46 +0900 |
| commit | 0bbc367e21bfeea33230d893be4fa3a3ff9bcb48 (patch) | |
| tree | 50fb335648a22ac519eddb772714ba64a3e6a7ec /arch/powerpc/include/asm/machdep.h | |
| parent | ae416ba4e94a30486ba2af0afe052579e7114ab8 (diff) | |
| parent | 32b88194f71d6ae7768a29f87fbba454728273ee (diff) | |
| download | blackbird-obmc-linux-0bbc367e21bfeea33230d893be4fa3a3ff9bcb48.tar.gz blackbird-obmc-linux-0bbc367e21bfeea33230d893be4fa3a3ff9bcb48.zip | |
Merge 4.3-rc7 into usb-next
We want the USB and other fixes in here as well.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'arch/powerpc/include/asm/machdep.h')
| -rw-r--r-- | arch/powerpc/include/asm/machdep.h | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/arch/powerpc/include/asm/machdep.h b/arch/powerpc/include/asm/machdep.h index cab6753f1be5..3f191f573d4f 100644 --- a/arch/powerpc/include/asm/machdep.h +++ b/arch/powerpc/include/asm/machdep.h @@ -61,8 +61,13 @@ struct machdep_calls { unsigned long addr, unsigned char *hpte_slot_array, int psize, int ssize, int local); - /* special for kexec, to be called in real mode, linear mapping is - * destroyed as well */ + /* + * Special for kexec. + * To be called in real mode with interrupts disabled. No locks are + * taken as such, concurrent access on pre POWER5 hardware could result + * in a deadlock. + * The linear mapping is destroyed as well. + */ void (*hpte_clear_all)(void); void __iomem * (*ioremap)(phys_addr_t addr, unsigned long size, |
