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X-Received-From: 2607:f8b0:4864:20::1043 X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: qemu-ppc@nongnu.org, Mark Cave-Ayland , =?UTF-8?Q?C=c3=a9dric_Le_Goater?= , David Gibson Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" On 04/12/2019 15:23, Alexey Kardashevskiy wrote: > > > On 04/12/2019 03:09, Laurent Vivier wrote: >> >> Bad reply, the problem is with >> >> "spapr: Render full FDT on ibm,client-architecture-support" > > > https://git.qemu.org/?p=SLOF.git;a=blob;f=board-qemu/slof/fdt.fs;h=3e4c1b34b8af2dcebde57e548c94417e5e20e1cc;hb=HEAD#l265 > > A "bit ugly" became really ugly as before we were only patching > interrupt-map for PHB (7 cells per line) only but now we have to patch > (or, rather, skip) the PCI bridge interrupt-map (9 cells per line). > > Fixing now... Basically, this: diff --git a/board-qemu/slof/fdt.fs b/board-qemu/slof/fdt.fs index 3e4c1b34b8af..463a2a8c0c2d 100644 --- a/board-qemu/slof/fdt.fs +++ b/board-qemu/slof/fdt.fs @@ -300,8 +300,13 @@ fdt-claim-reserve \ ." Replacing in " dup node>path type cr >r s" interrupt-map" r@ get-property 0= IF - ( old new prop-addr prop-len R: node ) - fdt-replace-interrupt-map + dup e00 = IF + ( old new prop-addr prop-len R: node ) + fdt-replace-interrupt-map + ELSE + 2drop + ." no idea what this is" cr + THEN THEN > > >> >> Sorry, >> Laurent >> >> On 03/12/2019 16:57, Laurent Vivier wrote: >>> On 18/11/2019 11:53, Laurent Vivier wrote: >>>> From: Alexey Kardashevskiy >>>> >>>> Since "spapr: Render full FDT on ibm,client-architecture-support" we build >>>> the entire flatten device tree (FDT) twice - at the reset time and >>>> when "ibm,client-architecture-support" (CAS) is called. The full FDT from >>>> CAS is then applied on top of the SLOF internal device tree. >>>> >>>> This is mostly ok, however there is a case when the QEMU is started with >>>> -initrd and for some reason the guest decided to move/unpack the init RAM >>>> disk image - the guest correctly notifies SLOF about the change but >>>> at CAS it is overridden with the QEMU initial location addresses and >>>> the guest may fail to boot if the original initrd memory was changed. >>>> >>>> This fixes the problem by only adding the /chosen node at the reset time >>>> to prevent the original QEMU's linux,initrd-start/linux,initrd-end to >>>> override the updated addresses. >>>> >>>> This only treats /chosen differently as we know there is a special case >>>> already and it is unlikely anything else will need to change /chosen at CAS >>>> we are better off not touching /chosen after we handed it over to SLOF. >>>> >>>> Signed-off-by: Alexey Kardashevskiy >>>> Message-Id: <20191024041308.5673-1-aik@ozlabs.ru> >>>> Signed-off-by: David Gibson >>>> Signed-off-by: Laurent Vivier >>>> --- >>>> hw/ppc/spapr.c | 25 +++++++++++++++---------- >>>> 1 file changed, 15 insertions(+), 10 deletions(-) >>>> >>> >>> This patch breaks pseries boot when we use a pci-bridge (since v4.2.0-rc0): >>> >>> ... >>> -device pci-bridge,id=pci_bridge1,bus=pci.0,addr=0x3,chassis_nr=1 \ >>> -device virtio-scsi-pci,bus=pci_bridge1 \ >>> ... >>> >>> OF stdout device is: /vdevice/vty@71000000 >>> Preparing to boot Linux version 5.4.0-rc3+ (lvivier@localhost) (gcc >>> version 4.8.5 20150623 (Red Hat 4.8.5-39) (GCC)) #2 SMP Wed Nov 13 >>> 09:08:20 EST 2019 >>> Detected machine type: 0000000000000101 >>> command line: BOOT_IMAGE=/vmlinuz-5.4.0-rc3+ root=/dev/mapper/rhel-root >>> ro crashkernel=auto rd.lvm.lv=rhel/root rd.lvm.lv=rhel/swap >>> Max number of cores passed to firmware: 2048 (NR_CPUS = 2048) >>> Calling ibm,client-architecture-support... >>> >>> ( 300 ) Data Storage Exception [ 1dc5f230 ] >>> >>> >>> R0 .. R7 R8 .. R15 R16 .. R23 R24 .. R31 >>> 8000000000001000 000000001e477010 0000000000000000 000000001dc17500 >>> 000000001e67afe0 0000000020000004 0000000000000000 000000001dc1bf88 >>> 000000001dc21800 000000001dc5f248 000000001e477010 0000000000000003 >>> 000000001dc61000 000000001e78dc2d 000000001dc1c158 000000000000f001 >>> 0000000000000000 a000000000000001 0000000000008000 000000001e67b060 >>> 000000001dc5f230 0000000000000000 000000000000f003 ffffffffffffffff >>> 000000001e745860 0000000000000000 0000000000000006 000000001dbf48f8 >>> 000000001dc5f248 0000000000000000 000000001e67b050 000000001dc1c350 >>> >>> CR / XER LR / CTR SRR0 / SRR1 DAR / DSISR >>> 80000808 000000001dbf34d4 000000001dbf4194 0000000020000004 >>> 0000000020000000 000000001dbf48f8 8000000000001000 40000000 >>> >>> >>> 4a > >>> >>> Thanks, >>> Laurent >>> >> > -- Alexey