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Re: [PATCH] target/riscv/pmp: fix no pmp illegal intrs


From: Richard Henderson
Subject: Re: [PATCH] target/riscv/pmp: fix no pmp illegal intrs
Date: Tue, 14 Dec 2021 13:12:32 -0800
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.14.0

On 12/14/21 1:26 AM, Nikita Shubin wrote:
-    if (!pmp_get_num_rules(env) && (prev_priv != PRV_M)) {
+    if (riscv_feature(env, RISCV_FEATURE_PMP) &&
+        !pmp_get_num_rules(env) && (prev_priv != PRV_M)) {

When would the number of rules become non-zero with PMP disabled?
When does this test make a difference?


r~



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