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Exclude areas not assigned to Mckernel from direct map of all phys. memory

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It's enabled by adding -s to mcreboot.sh.

Cherry-pick of the following commit:

commit b5c13ce51a5a4926c2cf11c817cd0d369ac4402d
Author: Katsuya Horigome <katsuya.horigome.rj@ps.hitachi-solutions.com>
Date:   Mon Nov 20 09:40:41 2017 +0900

    Include measures to prevent memory destruction on Linux side (This is rebase commit for merging to development+hfi)
This commit is contained in:
Katsuya Horigome
2018-02-19 11:59:04 +09:00
committed by Balazs Gerofi
parent 21f9a1ea33
commit 205747594b
22 changed files with 414 additions and 14 deletions
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50
test/mem_dest_prev/test_memtest_destroy.patch Normal file
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@ -0,0 +1,50 @@
diff --git arch/x86/kernel/include/syscall_list.h arch/x86/kernel/include/syscall_list.h
index 42d1e2e..f5769b8 100644
--- arch/x86/kernel/include/syscall_list.h
+++ arch/x86/kernel/include/syscall_list.h
@@ -156,5 +156,7 @@ SYSCALL_HANDLED(__NR_profile, profile)
SYSCALL_HANDLED(730, util_migrate_inter_kernel)
SYSCALL_HANDLED(731, util_indicate_clone)
SYSCALL_HANDLED(732, get_system)
+/* McKernel Specific */
+SYSCALL_HANDLED(950, mem_destroy)
/**** End of File ****/
diff --git arch/x86/kernel/syscall.c arch/x86/kernel/syscall.c
index 2260b66..e96776a 100644
--- arch/x86/kernel/syscall.c
+++ arch/x86/kernel/syscall.c
@@ -1887,4 +1887,33 @@ save_uctx(void *uctx, struct x86_user_context *regs)
ctx->fregsize = 0;
}
+
+#define ADD_ADDR_VAL 0x400
+SYSCALL_DECLARE(mem_destroy)
+{
+ int rst = 0;
+ int mem_chunks_num, chunk_id, get_numa_id;
+ unsigned long get_start, get_end;
+ unsigned long *addr;
+
+ mem_chunks_num = ihk_mc_get_nr_memory_chunks();
+ kprintf("%s: memory chunk %d.\n", __FUNCTION__, mem_chunks_num);
+
+ for (chunk_id = 0; chunk_id < mem_chunks_num; chunk_id++) {
+ rst = ihk_mc_get_memory_chunk(chunk_id, &get_start, &get_end, &get_numa_id);
+ kprintf("%s: mem chunk[%d] numa ID(%d)\n"
+ ,__FUNCTION__ ,chunk_id ,get_numa_id);
+ kprintf(" phys(0x%lx - 0x%lx) virt(0x%lx - 0x%lx)\n"
+ ,get_start ,get_end ,phys_to_virt(get_start) ,phys_to_virt(get_end));
+ }
+
+ addr = phys_to_virt(get_end + ADD_ADDR_VAL);
+#if 1
+ *addr = 0x1;
+#endif
+ kprintf("%s: Address out of range 0x%lx(val:%d)\n",__FUNCTION__ ,addr ,*addr);
+
+ return rst;
+}
+
/*** End of File ***/