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| author | Anup Patel <anup.patel@wdc.com> | 2019-05-23 11:00:58 +0300 |
|---|---|---|
| committer | Anup Patel <anup@brainfault.org> | 2019-05-24 05:52:47 +0300 |
| commit | a6395acd6cb2c35871481d3e4f0beaf449f8c0fd (patch) | |
| tree | 4361c3454a814e49cea8f53d0a6cf3885e7f280b /lib/sbi_system.c | |
| parent | bb915780ac76b146f3de47f105a95359e02f158c (diff) | |
| download | opensbi-a6395acd6cb2c35871481d3e4f0beaf449f8c0fd.tar.xz | |
lib: Handle page/access fault caused by unpriv load/store
The unpriv load/store instruction from M-mode can cause page/access
fault to M-mode if S-mode page table did not have mappings OR it did
not have PMP access permission.
To tackle this, we redirect trap back to S-mode if unpriv load/store
instruction traps in M-mode.
Signed-off-by: Anup Patel <anup.patel@wdc.com>
Reviewed-by: Atish Patra <atish.patra@wdc.com>
Diffstat (limited to 'lib/sbi_system.c')
| -rw-r--r-- | lib/sbi_system.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/lib/sbi_system.c b/lib/sbi_system.c index 3381d40..2cb30d4 100644 --- a/lib/sbi_system.c +++ b/lib/sbi_system.c @@ -39,7 +39,7 @@ sbi_system_shutdown(struct sbi_scratch *scratch, u32 type) /* If that fails (or is not implemented) send an IPI on every * hart to hang and then hang the current hart */ - sbi_ipi_send_many(scratch, NULL, SBI_IPI_EVENT_HALT, NULL); + sbi_ipi_send_many(scratch, NULL, NULL, SBI_IPI_EVENT_HALT, NULL); sbi_hart_hang(); } |