Re: [Xen-devel] [PATCH 0/6] iomem cacheability

[Amit Tomer <amittomer25@xxxxxxxxx>]

Hi,

> Yes, you are right. I made a couple of quick fixes for this issue and
> another issue raised by Julien during review (the usage of p2m_ram_t).
> Amit, if you would like to give it a try I have a work-in-progress
> branch with the fixes here:

We did try new branch with new fixes but we see some other crash now.

XEN) Loading kernel from boot module @ 000000007a000000
(XEN) Allocating 1:1 mappings totalling 2048MB for dom0:
(XEN) No bank has been allocated below 4GB.
(XEN) BANK[0] 0x00000500000000-0x00000540000000 (1024MB)
(XEN) BANK[1] 0x00000600000000-0x00000640000000 (1024MB)
(XEN) Grant table range: 0x0000073fe00000-0x0000073fe40000
(XEN) Allocating PPI 16 for event channel interrupt
(XEN) Loading zImage from 000000007a000000 to 0000000500080000-0000000501880000
(XEN) Loading dom0 DTB to 0x0000000508000000-0x00000005080117d0
(XEN) Initial low memory virq threshold set at 0x4000 pages.
(XEN) Scrubbing free RAM on in background
(XEN) Std. Loglevel: All
(XEN) Guest Loglevel: All
(XEN) *** Serial input -> DOM0 (type 'CTRL-a' three times to switch
input to Xen)
(XEN) Freed 292kB init memory.
[    0.000000] Booting Linux on physical CPU 0x0
[    0.000000] Boot CPU: AArch64 Processor [411fd073]
[    0.000000] Machine model: Renesas H3ULCB board based on r8a7795 ES2.0+
[    0.000000] earlycon: xenboot0 at I/O port 0x0 (options '')
[    0.000000] bootconsole [xenboot0] enabled
[    0.000000] Xen 4.12 support found
[    0.000000] efi: Getting EFI parameters from FDT:
[    0.000000] efi: UEFI not found.
[    0.000000] Reserved memory: created CMA memory pool at
0x0000000057000000, size 400 MiB
[    0.000000] OF: reserved mem: initialized node linux,cma@57000000,
compatible id shared-dma-pool
[    0.000000] Reserved memory: created CMA memory pool at
0x0000000070000000, size 256 MiB
[    0.000000] OF: reserved mem: initialized node
linux,multimedia@70000000, compatible id shared-dma-pool
[    0.000000] cma: dma_contiguous_reserve(limit 100000000)
[    0.000000] NUMA: No NUMA configuration found
[    0.000000] NUMA: Faking a node at [mem
0x0000000000000000-0x000000063fffffff]
[    0.000000] NUMA: NODE_DATA [mem 0x63ff90c00-0x63ff926ff]
[    0.000000] Zone ranges:
[    0.000000]   DMA      [mem 0x0000000057000000-0x00000000ffffffff]
[    0.000000]   Normal   [mem 0x0000000100000000-0x000000063fffffff]
[    0.000000] Movable zone start for each node
[    0.000000] Early memory node ranges
[    0.000000]   node   0: [mem 0x0000000057000000-0x000000007fffffff]
[    0.000000]   node   0: [mem 0x0000000500000000-0x000000053fffffff]
[    0.000000]   node   0: [mem 0x0000000600000000-0x000000063fffffff]
[    0.000000] Initmem setup node 0 [mem 0x0000000057000000-0x000000063fffffff]
[    0.000000] On node 0 totalpages: 692224
[    0.000000]   DMA zone: 2624 pages used for memmap
[    0.000000]   DMA zone: 0 pages reserved
[    0.000000]   DMA zone: 167936 pages, LIFO batch:31
[    0.000000]   Normal zone: 8192 pages used for memmap
[    0.000000]   Normal zone: 524288 pages, LIFO batch:31
[    0.000000] bootmem alloc of 64 bytes failed!
[    0.000000] Kernel panic - not syncing: Out of memory
[    0.000000] CPU: 0 PID: 0 Comm: swapper Not tainted
4.14.75-ltsi-yocto-standard #3
[    0.000000] Hardware name: Renesas H3ULCB board based on r8a7795 ES2.0+ (DT)
[    0.000000] Call trace:
[    0.000000] [<ffff000008089ae8>] dump_backtrace+0x0/0x3c0
[    0.000000] [<ffff000008089ebc>] show_stack+0x14/0x20
[    0.000000] [<ffff000008af20e8>] dump_stack+0x9c/0xbc
[    0.000000] [<ffff0000080ce770>] panic+0x11c/0x28c
[    0.000000] [<ffff0000090478fc>] free_bootmem_late+0x0/0x7c
[    0.000000] [<ffff000009047d90>] __alloc_bootmem_low+0x2c/0x38
[    0.000000] [<ffff0000090329fc>] setup_arch+0x258/0x4d8
[    0.000000] [<ffff00000903083c>] start_kernel+0x64/0x3ac
[    0.000000] ---[ end Kernel panic - not syncing: Out of memory

Thanks
-Amit

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