[mirror_ubuntu-bionic-kernel.git] / arch / powerpc / kernel / security.c

// SPDX-License-Identifier: GPL-2.0+
//
// Security related flags and so on.
//
// Copyright 2018, Michael Ellerman, IBM Corporation.

#include <linux/kernel.h>
#include <linux/device.h>

#include <asm/security_features.h>


unsigned long powerpc_security_features __read_mostly = \
	SEC_FTR_L1D_FLUSH_HV | \
	SEC_FTR_L1D_FLUSH_PR | \
	SEC_FTR_BNDS_CHK_SPEC_BAR | \
	SEC_FTR_FAVOUR_SECURITY;


ssize_t cpu_show_meltdown(struct device *dev, struct device_attribute *attr, char *buf)
{
	if (rfi_flush)
		return sprintf(buf, "Mitigation: RFI Flush\n");

	return sprintf(buf, "Vulnerable\n");
}
Commit	Line	Data
6e61041f ME	1	// SPDX-License-Identifier: GPL-2.0+
	2	//
	3	// Security related flags and so on.
	4	//
	5	// Copyright 2018, Michael Ellerman, IBM Corporation.
	6
	7	#include <linux/kernel.h>
ffd22047 ME	8	#include <linux/device.h>
ffd22047 ME	9
6e61041f ME	10	#include <asm/security_features.h>
	11
	12
	13	unsigned long powerpc_security_features __read_mostly = \
	14	SEC_FTR_L1D_FLUSH_HV \| \
	15	SEC_FTR_L1D_FLUSH_PR \| \
	16	SEC_FTR_BNDS_CHK_SPEC_BAR \| \
	17	SEC_FTR_FAVOUR_SECURITY;
ffd22047 ME	18
	19
	20	ssize_t cpu_show_meltdown(struct device dev, struct device_attribute attr, char *buf)
	21	{
	22	if (rfi_flush)
	23	return sprintf(buf, "Mitigation: RFI Flush\n");
	24
	25	return sprintf(buf, "Vulnerable\n");
	26	}