diff options
author | Ian Moffett <ian@osmora.org> | 2024-06-24 22:55:29 -0400 |
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committer | Ian Moffett <ian@osmora.org> | 2024-06-24 22:55:29 -0400 |
commit | 236963e7563be3e3f8220dac7bb4af446928e194 (patch) | |
tree | e521ea226db0345bbb3679fffe09d96254b7dc73 /sys/vm/vm_page.c | |
parent | 214eadc62b5578f76c98a38a28f8b3d80ac4d6ad (diff) |
Clean out for expt
Signed-off-by: Ian Moffett <ian@osmora.org>
Diffstat (limited to 'sys/vm/vm_page.c')
-rw-r--r-- | sys/vm/vm_page.c | 73 |
1 files changed, 0 insertions, 73 deletions
diff --git a/sys/vm/vm_page.c b/sys/vm/vm_page.c deleted file mode 100644 index f496fee..0000000 --- a/sys/vm/vm_page.c +++ /dev/null @@ -1,73 +0,0 @@ -/* - * Copyright (c) 2023-2024 Ian Marco Moffett and the Osmora Team. - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are met: - * - * 1. Redistributions of source code must retain the above copyright notice, - * this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * 3. Neither the name of Hyra nor the names of its - * contributors may be used to endorse or promote products derived from - * this software without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" - * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE - * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR - * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF - * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS - * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN - * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) - * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE - * POSSIBILITY OF SUCH DAMAGE. - */ - -#include <sys/cdefs.h> -#include <sys/panic.h> -#include <vm/page.h> -#include <vm/vm.h> -#include <string.h> - -__MODULE_NAME("vm_page"); -__KERNEL_META("$Hyra$: vm_page.c, Ian Marco Moffett, " - "Virtual memory page specific operations"); - -/* - * Zero `page_count' pages. - * - * @page: First page to start zeroing at - * @page_count: Number of pages to zero. - */ -void -vm_zero_page(void *page, size_t page_count) -{ - const size_t PAGE_SIZE = vm_get_page_size(); - size_t bytes = page_count * PAGE_SIZE; - - /* - * This *should not* happen. Page sizes - * are usually 2^n but if this runs, something - * *very* weird is happening and either something - * broke badly. Or it's that damn technological - * degeneration that is getting out of hand within - * our world!! But really, page sizes *should* be a - * power of 2 and it would be pretty worrying if - * this branches causing a panic stating something - * that shouldn't happen, happened. - * - * The reason why it is wise for pages to be a power of - * 2 is so we can efficiently read/write to the page in - * fixed-sized power of 2 blocks cleanly without the risk - * of clobbering other pages we didn't intend to mess with. - */ - if ((PAGE_SIZE & 1) != 0) { - panic("Unexpected page size, not power of 2!\n"); - } - - memset64(page, 0, bytes/8); -} |