Merge tag 'kvm-riscv-6.3-1' of https://github.com/kvm-riscv/linux into HEAD

KVM/riscv changes for 6.3

- Fix wrong usage of PGDIR_SIZE to check page sizes
- Fix privilege mode setting in kvm_riscv_vcpu_trap_redirect()
- Redirect illegal instruction traps to guest
- SBI PMU support for guest

1 files changed, 11 insertions, 0 deletions

diff --git a/io_uring/net.c b/io_uring/net.c
index fbc34a7c2743..90326b279965 100644
--- a/io_uring/net.c
+++ b/io_uring/net.c
@@ -62,6 +62,7 @@ struct io_sr_msg {
 	u16				flags;
 	/* initialised and used only by !msg send variants */
 	u16				addr_len;
+	u16				buf_group;
 	void __user			*addr;
 	/* used only for send zerocopy */
 	struct io_kiocb 		*notif;
@@ -580,6 +581,15 @@ int io_recvmsg_prep(struct io_kiocb *req, const struct io_uring_sqe *sqe)
 		if (req->opcode == IORING_OP_RECV && sr->len)
 			return -EINVAL;
 		req->flags |= REQ_F_APOLL_MULTISHOT;
+		/*
+		 * Store the buffer group for this multishot receive separately,
+		 * as if we end up doing an io-wq based issue that selects a
+		 * buffer, it has to be committed immediately and that will
+		 * clear ->buf_list. This means we lose the link to the buffer
+		 * list, and the eventual buffer put on completion then cannot
+		 * restore it.
+		 */
+		sr->buf_group = req->buf_index;
 	}
 
 #ifdef CONFIG_COMPAT
@@ -596,6 +606,7 @@ static inline void io_recv_prep_retry(struct io_kiocb *req)
 
 	sr->done_io = 0;
 	sr->len = 0; /* get from the provided buffer */
+	req->buf_index = sr->buf_group;
 }
 
 /*