From 6242d1b74538c904ac28116b07a22d9cc6bf2542 Mon Sep 17 00:00:00 2001 From: Jens Wiklander Date: Mon, 4 Sep 2023 16:58:14 +0200 Subject: [PATCH] xen/arm: ffa: fix guest map RX/TX error code FFA_RXTX_MAP is currently limited to mapping only one 4k page for each RX and TX buffer. If a guest tries to map more than one page, an error is returned. Until this patch, we have been using FFA_RET_NOT_SUPPORTED. However, that error code is reserved in the FF-A specification to report that the function is not implemented. Of all the other defined error codes, the least bad is FFA_RET_INVALID_PARAMETERS, so use that instead. Fixes: 38d81e7ccb11 ("xen/arm: ffa: support mapping guest RX/TX buffers") Signed-off-by: Jens Wiklander Reviewed-by: Bertrand Marquis --- xen/arch/arm/tee/ffa.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/xen/arch/arm/tee/ffa.c b/xen/arch/arm/tee/ffa.c index 802b2dbb1d..183528d133 100644 --- a/xen/arch/arm/tee/ffa.c +++ b/xen/arch/arm/tee/ffa.c @@ -706,7 +706,7 @@ static uint32_t handle_rxtx_map(uint32_t fid, register_t tx_addr, { printk(XENLOG_ERR "ffa: RXTX_MAP: error: %u pages requested (limit %u)\n", page_count, FFA_MAX_RXTX_PAGE_COUNT); - return FFA_RET_NOT_SUPPORTED; + return FFA_RET_INVALID_PARAMETERS; } /* Already mapped */ -- 2.39.5