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map kernel parameter into the virtual address space

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This commit is contained in:
Stefan Lankes 2017-05-27 21:21:57 +02:00
parent 29c1f14bf5
commit ff44f5fa39
1 changed files with 5 additions and 5 deletions
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10
arch/x86/mm/page.c
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@ -325,11 +325,11 @@ int page_init(void)
LOG_INFO("Detect Go runtime! Consequently, HermitCore zeroed heap.\n");
}
if (mb_info && ((mb_info->cmdline & PAGE_MASK) != ((size_t) mb_info & PAGE_MASK))) {
LOG_INFO("Map multiboot cmdline 0x%x into the virtual address space\n", mb_info->cmdline);
// reserve 2 pages for long cmdline strings
page_map(((size_t) mb_info->cmdline) & PAGE_MASK, ((size_t) mb_info->cmdline) & PAGE_MASK, 2, PG_GLOBAL|PG_RW|PG_PRESENT);
}
// reserve 2 pages for long cmdline strings
if (mb_info && (((size_t)mb_info->cmdline & PAGE_MASK) != ((size_t) mb_info & PAGE_MASK)))
page_map(((size_t) mb_info->cmdline) & PAGE_MASK, ((size_t) mb_info->cmdline) & PAGE_MASK, 1, PG_GLOBAL|PG_RW|PG_PRESENT);
if (mb_info && ((((size_t)mb_info->cmdline + PAGE_SIZE) & PAGE_MASK) != ((size_t) mb_info & PAGE_MASK)))
page_map(((size_t) mb_info->cmdline + PAGE_SIZE) & PAGE_MASK, ((size_t) mb_info->cmdline + PAGE_SIZE) & PAGE_MASK, 1, PG_GLOBAL|PG_RW|PG_PRESENT);
/* Replace default pagefault handler */
irq_uninstall_handler(14);