diff options
| author | Atish Patra <[email protected]> | 2019-01-21 17:54:00 -0800 |
|---|---|---|
| committer | Anup Patel <[email protected]> | 2019-01-22 10:03:49 +0530 |
| commit | bc545539d2f2842c12c8b16d898a21113ce70417 (patch) | |
| tree | 8eb68c3b49d9bc27d4ea43fedbc96b05df254d77 | |
| parent | b9c517f5593716d11013bef5fa25f037734327b7 (diff) | |
lib: Allow sending IPI to self.
S-mode software may send IPI to self. For example,
tlbflush may be executed for the same hart.
Let the hart send IPI to itself. It's an overhead
but doesn't break anything. However, if we don't
allow it, it breaks if S-mode keep sending IPIs.
Signed-off-by: Atish Patra <[email protected]>
| -rw-r--r-- | lib/sbi_ipi.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/lib/sbi_ipi.c b/lib/sbi_ipi.c index 1b740706..a6120279 100644 --- a/lib/sbi_ipi.c +++ b/lib/sbi_ipi.c @@ -31,7 +31,7 @@ int sbi_ipi_send_many(struct sbi_scratch *scratch, /* send IPIs to everyone */ for (i = 0, m = mask; m; i++, m >>= 1) { - if ((m & 1) && (i != hartid) && !sbi_platform_hart_disabled(plat, hartid)) { + if ((m & 1) && !sbi_platform_hart_disabled(plat, hartid)) { oth = sbi_hart_id_to_scratch(scratch, i); atomic_raw_set_bit(event, &oth->ipi_type); mb(); |