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Re: [PATCH 3/3] x86/PVH: Support relocatable dom0 kernels
- To: Jan Beulich <jbeulich@xxxxxxxx>
- From: Jason Andryuk <jason.andryuk@xxxxxxx>
- Date: Mon, 11 Mar 2024 15:53:24 -0400
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- Cc: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>, Roger Pau Monné <roger.pau@xxxxxxxxxx>, Wei Liu <wl@xxxxxxx>, George Dunlap <george.dunlap@xxxxxxxxxx>, Julien Grall <julien@xxxxxxx>, Stefano Stabellini <sstabellini@xxxxxxxxxx>, <xen-devel@xxxxxxxxxxxxxxxxxxxx>
- Delivery-date: Mon, 11 Mar 2024 19:56:52 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
On 2024-03-11 12:53, Jan Beulich wrote:
On 06.03.2024 19:50, Jason Andryuk wrote:
--- a/xen/arch/x86/hvm/dom0_build.c
+++ b/xen/arch/x86/hvm/dom0_build.c
@@ -537,6 +537,109 @@ static paddr_t __init find_memory(
return INVALID_PADDR;
}
+static bool __init check_load_address(
+ const struct domain *d, const struct elf_binary *elf)
+{
+ paddr_t kernel_start = (paddr_t)elf->dest_base & PAGE_MASK;
+ paddr_t kernel_end = ROUNDUP((paddr_t)elf->dest_base + elf->dest_size,
+ PAGE_SIZE);
+ unsigned int i;
+
+ /*
+ * The memory map is sorted and all RAM regions starts and sizes are
+ * aligned to page boundaries.
+ */
+ for ( i = 0; i < d->arch.nr_e820; i++ )
+ {
+ paddr_t start = d->arch.e820[i].addr;
+ paddr_t end = d->arch.e820[i].addr + d->arch.e820[i].size;
+
+ if ( start <= kernel_start &&
+ end >= kernel_end &&
+ d->arch.e820[i].type == E820_RAM )
+ return true;
+ }
+
+ return false;
+}
+
+/*
+ * Find an e820 RAM region that fits the kernel at a suitable alignment.
+ */
+static paddr_t find_kernel_memory(
__init ?
Yes, thanks for catching that.
Regards,
Jason
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