random-mirrors/opensbi
1
0
Fork 0
mirror of https://github.com/riscv-software-src/opensbi synced 2025-10-14 04:46:06 +01:00
Code Issues Packages Projects Releases Wiki Activity

lib: sbi: Fix PMP granularity handling in sbi_hart_map_saddr()

Browse Source 
The sbi_hart_map_saddr() must create PMP mapping of size greater
than or equal to PMP granularity otherwise PMP mapping does not
work when size parameter less than sbi_hart_pmp_granularity(scratch).

Fixes: 6e44ef686a9b ("lib: sbi: Add functions to map/unmap shared memory")
Signed-off-by: Anup Patel <apatel@ventanamicro.com>
Reviewed-by: Samuel Holland <samuel.holland@sifive.com>
This commit is contained in:
Anup Patel 2023-11-19 18:32:10 +05:30 committed by Anup Patel
parent dc0bb19bd2
commit 16bb930533
1 changed files with 2 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
lib/sbi/sbi_hart.c
View File

@ -508,7 +508,8 @@ int sbi_hart_map_saddr(unsigned long addr, unsigned long size)
if (is_pmp_entry_mapped(SBI_SMEPMP_RESV_ENTRY))
return SBI_ENOSPC;
for (order = log2roundup(size) ; order <= __riscv_xlen; order++) {
for (order = log2roundup(MAX(sbi_hart_pmp_granularity(scratch), size));
order <= __riscv_xlen; order++) {
if (order < __riscv_xlen) {
base = addr & ~((1UL << order) - 1UL);
if ((base <= addr) &&