um_arch.c (ea68a3e9d14e9e0bf017d178fb4bd53b6deb1482) um_arch.c (6032aca0deb9c138df122192f8ef02de1fdccf25)
1// SPDX-License-Identifier: GPL-2.0
2/*
3 * Copyright (C) 2000 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
4 */
5
6#include <linux/delay.h>
7#include <linux/init.h>
8#include <linux/mm.h>

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321 }
322 if (have_root == 0)
323 add_arg(DEFAULT_COMMAND_LINE_ROOT);
324
325 if (have_console == 0)
326 add_arg(DEFAULT_COMMAND_LINE_CONSOLE);
327
328 host_task_size = os_get_top_address();
1// SPDX-License-Identifier: GPL-2.0
2/*
3 * Copyright (C) 2000 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
4 */
5
6#include <linux/delay.h>
7#include <linux/init.h>
8#include <linux/mm.h>

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321 }
322 if (have_root == 0)
323 add_arg(DEFAULT_COMMAND_LINE_ROOT);
324
325 if (have_console == 0)
326 add_arg(DEFAULT_COMMAND_LINE_CONSOLE);
327
328 host_task_size = os_get_top_address();
329 /* reserve two pages for the stubs */
330 host_task_size -= 2 * PAGE_SIZE;
331 stub_start = host_task_size;
329 /* reserve a few pages for the stubs (taking care of data alignment) */
330 /* align the data portion */
331 BUILD_BUG_ON(!is_power_of_2(STUB_DATA_PAGES));
332 stub_start = (host_task_size - 1) & ~(STUB_DATA_PAGES * PAGE_SIZE - 1);
333 /* another page for the code portion */
334 stub_start -= PAGE_SIZE;
335 host_task_size = stub_start;
332
333 /*
334 * TASK_SIZE needs to be PGDIR_SIZE aligned or else exit_mmap craps
335 * out
336 */
337 task_size = host_task_size & PGDIR_MASK;
338
339 /* OS sanity checks that need to happen before the kernel runs */

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337 /*
338 * TASK_SIZE needs to be PGDIR_SIZE aligned or else exit_mmap craps
339 * out
340 */
341 task_size = host_task_size & PGDIR_MASK;
342
343 /* OS sanity checks that need to happen before the kernel runs */

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