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x86-64: enable smep and smap

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Matheus
2026-04-23 15:29:43 -03:00
parent b0542a165c
commit 71dd6d1125
9 changed files with 100 additions and 4 deletions
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kernel-src/mm/usercopy.c
+8
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@@ -31,7 +31,9 @@ static void memcpyinternal(context_t *ctx, void *arg) {
// this context with CTX_RET set to EFAULT
current_thread()->usercopyctx = ctx;
arch_cpu_user_access_begin();
memcpy(desc->dst, desc->src, desc->size);
arch_cpu_user_access_end();
// no errors!
CTX_RET(ctx) = 0;
@@ -45,7 +47,9 @@ static void strleninternal(context_t *ctx, void *arg) {
// this context with CTX_RET set to EFAULT
current_thread()->usercopyctx = ctx;
arch_cpu_user_access_begin();
*desc->size = strlen(desc->str);
arch_cpu_user_access_end();
// no errors!
CTX_RET(ctx) = 0;
@@ -59,7 +63,9 @@ static void atomic32internal(context_t *ctx, void *arg) {
// this context with CTX_RET set to EFAULT
current_thread()->usercopyctx = ctx;
arch_cpu_user_access_begin();
__atomic_load(desc->address, desc->value, __ATOMIC_SEQ_CST);
arch_cpu_user_access_end();
// no errors!
CTX_RET(ctx) = 0;
@@ -73,7 +79,9 @@ static void memset_internal(context_t *ctx, void *arg) {
// this context with CTX_RET set to EFAULT
current_thread()->usercopyctx = ctx;
arch_cpu_user_access_begin();
memset(desc->dst, desc->byte, desc->size);
arch_cpu_user_access_end();
// no errors!
CTX_RET(ctx) = 0;