Revision 0eb98f1588c2cc7a79816d84ab18a55d254f481c authored by Miaohe Lin on 12 January 2021, 23:49:24 UTC, committed by Linus Torvalds on 13 January 2021, 02:12:54 UTC
The huge page size is encoded for VM_FAULT_HWPOISON errors only. So if we return VM_FAULT_HWPOISON, huge page size would just be ignored. Link: https://lkml.kernel.org/r/20210107123449.38481-1-linmiaohe@huawei.com Fixes: aa50d3a7aa81 ("Encode huge page size for VM_FAULT_HWPOISON errors") Signed-off-by: Miaohe Lin <linmiaohe@huawei.com> Reviewed-by: Mike Kravetz <mike.kravetz@oracle.com> Cc: <stable@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
1 parent f555bef
fips.c
// SPDX-License-Identifier: GPL-2.0-or-later
/*
* FIPS 200 support.
*
* Copyright (c) 2008 Neil Horman <nhorman@tuxdriver.com>
*/
#include <linux/export.h>
#include <linux/fips.h>
#include <linux/init.h>
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/sysctl.h>
#include <linux/notifier.h>
int fips_enabled;
EXPORT_SYMBOL_GPL(fips_enabled);
ATOMIC_NOTIFIER_HEAD(fips_fail_notif_chain);
EXPORT_SYMBOL_GPL(fips_fail_notif_chain);
/* Process kernel command-line parameter at boot time. fips=0 or fips=1 */
static int fips_enable(char *str)
{
fips_enabled = !!simple_strtol(str, NULL, 0);
printk(KERN_INFO "fips mode: %s\n",
fips_enabled ? "enabled" : "disabled");
return 1;
}
__setup("fips=", fips_enable);
static struct ctl_table crypto_sysctl_table[] = {
{
.procname = "fips_enabled",
.data = &fips_enabled,
.maxlen = sizeof(int),
.mode = 0444,
.proc_handler = proc_dointvec
},
{}
};
static struct ctl_table crypto_dir_table[] = {
{
.procname = "crypto",
.mode = 0555,
.child = crypto_sysctl_table
},
{}
};
static struct ctl_table_header *crypto_sysctls;
static void crypto_proc_fips_init(void)
{
crypto_sysctls = register_sysctl_table(crypto_dir_table);
}
static void crypto_proc_fips_exit(void)
{
unregister_sysctl_table(crypto_sysctls);
}
void fips_fail_notify(void)
{
if (fips_enabled)
atomic_notifier_call_chain(&fips_fail_notif_chain, 0, NULL);
}
EXPORT_SYMBOL_GPL(fips_fail_notify);
static int __init fips_init(void)
{
crypto_proc_fips_init();
return 0;
}
static void __exit fips_exit(void)
{
crypto_proc_fips_exit();
}
subsys_initcall(fips_init);
module_exit(fips_exit);
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