On 11/05/2021 02:11, Henry Wang wrote:
Hi Julien,
Hi Henry,
From: Julien Grall <jul...@xen.org>
Hi Henry,
On 07/05/2021 05:06, Henry Wang wrote:
From: Julien Grall <jul...@xen.org>
On 28/04/2021 10:28, Henry Wang wrote:
[...]
when I continue booting Xen, I got following error log:
(XEN) CPU: 0
(XEN) PC: 00000000002b5a5c alloc_boot_pages+0x94/0x98
(XEN) LR: 00000000002ca3bc
(XEN) SP: 00000000002ffde0
(XEN) CPSR: 600003c9 MODE:64-bit EL2h (Hypervisor, handler)
(XEN)
(XEN) VTCR_EL2: 80000000
(XEN) VTTBR_EL2: 0000000000000000
(XEN)
(XEN) SCTLR_EL2: 30cd183d
(XEN) HCR_EL2: 0000000000000038
(XEN) TTBR0_EL2: 000000008413c000
(XEN)
(XEN) ESR_EL2: f2000001
(XEN) HPFAR_EL2: 0000000000000000
(XEN) FAR_EL2: 0000000000000000
(XEN)
(XEN) Xen call trace:
(XEN) [<00000000002b5a5c>] alloc_boot_pages+0x94/0x98 (PC)
(XEN) [<00000000002ca3bc>] setup_frametable_mappings+0xa4/0x108
(LR)
(XEN) [<00000000002ca3bc>] setup_frametable_mappings+0xa4/0x108
(XEN) [<00000000002cb988>] start_xen+0x344/0xbcc
(XEN) [<00000000002001c0>]
arm64/head.o#primary_switched+0x10/0x30
(XEN)
(XEN) ****************************************
(XEN) Panic on CPU 0:
(XEN) Xen BUG at page_alloc.c:432
(XEN) ****************************************
This is happening without my patch series applied, right? If so, what
happen if you apply it?
No, I am afraid this is with your patch series applied, and that is why I
am a little bit confused about the error log...
You are hitting the BUG() at the end of alloc_boot_pages(). This is hit
because the boot allocator couldn't allocate memory for your request.
Would you be able to apply the following diff and paste the output here?
diff --git a/xen/common/page_alloc.c b/xen/common/page_alloc.c
index ace6333c18ea..dbb736fdb275 100644
--- a/xen/common/page_alloc.c
+++ b/xen/common/page_alloc.c
@@ -329,6 +329,8 @@ void __init init_boot_pages(paddr_t ps, paddr_t pe)
if ( pe <= ps )
return;
+ printk("%s: ps %"PRI_paddr" pe %"PRI_paddr"\n", __func__, ps, pe);
+
first_valid_mfn = mfn_min(maddr_to_mfn(ps), first_valid_mfn);
bootmem_region_add(ps >> PAGE_SHIFT, pe >> PAGE_SHIFT);
@@ -395,6 +397,8 @@ mfn_t __init alloc_boot_pages(unsigned long nr_pfns,
unsigned long pfn_align)
unsigned long pg, _e;
unsigned int i = nr_bootmem_regions;
+ printk("%s: nr_pfns %lu pfn_align %lu\n", __func__, nr_pfns,
pfn_align);
+
BUG_ON(!nr_bootmem_regions);
while ( i-- )
Cheers,
--
Julien Grall
