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target/riscv: Use a smaller guess size for no-MMU PMP

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Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Bin Meng <bin.meng@windriver.com>
This commit is contained in:
Alistair Francis 2020-04-23 18:47:38 -07:00
parent cc4112605e
commit 1145188e09
1 changed files with 9 additions and 5 deletions
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8
target/riscv/pmp.c
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@ -233,12 +233,16 @@ bool pmp_hart_has_privs(CPURISCVState *env, target_ulong addr,
return true;
}
if (size == 0) {
if (riscv_feature(env, RISCV_FEATURE_MMU)) {
/*
* if size is unknown (0), assume that all bytes
* If size is unknown (0), assume that all bytes
* from addr to the end of the page will be accessed.
*/
if (size == 0) {
pmp_size = -(addr | TARGET_PAGE_MASK);
} else {
pmp_size = sizeof(target_ulong);
}
} else {
pmp_size = size;
}