At console init, when the kernel tries to flush the log buffer
the ePAPR byte-channel based console write fails silently,
losing the buffered messages.
This happens because The ePAPR para-virtualization init isn't
done early enough so that the hcall instruction to be set,
causing the byte-channel write hcall to be a nop.
To fix, change the ePAPR para-virt init to use early device
tree functions and move it in early init.
Signed-off-by: Laurentiu Tudor <Laurentiu.Tudor@freescale.com>
Signed-off-by: Scott Wood <scottwood@freescale.com>
For 32-bit, CONFIG_EPAPR_PARAVIRT pulls in both epapr_paravirt.c
and epapr_hcalls.c which contains the 32-bit paravirt idle loop.
For 64-bit, the paravirt idle loop is in idle_book3e.S and that
source file is included only if CONFIG_PPC_BOOK3E_64 defined.
This patch makes that dependency for 64-bit explicit.
Fixes these build errors:
arch/powerpc/kernel/built-in.o: In function `restore_pblist_ptr':
ftrace.c:(.toc+0xdc0): undefined reference to `epapr_ev_idle_start'
ftrace.c:(.toc+0xdd0): undefined reference to `epapr_ev_idle'
Signed-off-by: Stuart Yoder <stuart.yoder@freescale.com>
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
epapr paravirtualization support is now a Kconfig
selectable option
Signed-off-by: Liu Yu <yu.liu@freescale.com>
[stuart.yoder@freescale.com: misc minor fixes, description update]
Signed-off-by: Stuart Yoder <stuart.yoder@freescale.com>
Signed-off-by: Alexander Graf <agraf@suse.de>
