Lass 0916

BM/lass/Makefile

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+# SPDX-License-Identifier: GPL-2.0-only
+# Copyright (c) 2024 Intel Corporation.
+
+CC = gcc
+TARGET = lass
+
+$(TARGET): lass.c
+	$(CC) -o $@ $<
+
+clean:
+	rm -f $(TARGET)

BM/lass/README.md

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+#LASS
+
+## Description
+Linear Address Space Separation (LASS) aims to prevent side-channel attacks based that rely on timing memory accesses (cache hits will have shorter access times).
+
+LASS achieves this by preventing memory loads/stores to user space memory in supervisor mode and vice versa (access to kernel memory in user mode).
+
+## Usage
+```
+make
+# To run a specific case
+./lam -t <testcase_id>
+(for example, cpuid) ./lass m
+```
+Test results (PASS or FAIL) will be printed out. 
+
+## Testcase ID
+| Case ID | Case Name |
+| ------ | ------------------------------------------------------------------- |
+| m      |  Test get vsyscall address maps.[negative]                          |
+| d      |  Test execute vsyscall addr 0xffffffffff600000.[negative]           |
+| g      |  Test call vsyscall                                                 |
+| t      |  Test call vsyscall api gettimeofday                                |
+| r      |  Test read vsyscall 0xffffffffff600000.[negative]                   |
+| i      |  Test read random kernel space.[negative]                           |
+| v      |  Test process_vm_readv read address 0xffffffffff600000.[negative]   |
+| e      |  Test vsyscall emulation.                                           |