linux-kernel - [PATCH AUTOSEL 5.5 045/106] powerpc/prom_init: Pass the "os-term" message to hypervisor

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Message-Id: <20200415114226.13103-45-sashal@kernel.org>
Date:   Wed, 15 Apr 2020 07:41:25 -0400
From:   Sasha Levin <sashal@...nel.org>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:     Alexey Kardashevskiy <aik@...abs.ru>,
        Michael Ellerman <mpe@...erman.id.au>,
        Sasha Levin <sashal@...nel.org>, linuxppc-dev@...ts.ozlabs.org
Subject: [PATCH AUTOSEL 5.5 045/106] powerpc/prom_init: Pass the "os-term" message to hypervisor

From: Alexey Kardashevskiy <aik@...abs.ru>

[ Upstream commit 74bb84e5117146fa73eb9d01305975c53022b3c3 ]

The "os-term" RTAS calls has one argument with a message address of OS
termination cause. rtas_os_term() already passes it but the recently
added prom_init's version of that missed it; it also does not fill
args correctly.

This passes the message address and initializes the number of arguments.

Fixes: 6a9c930bd775 ("powerpc/prom_init: Add the ESM call to prom_init")
Signed-off-by: Alexey Kardashevskiy <aik@...abs.ru>
Signed-off-by: Michael Ellerman <mpe@...erman.id.au>
Link: https://lore.kernel.org/r/20200312074404.87293-1-aik@ozlabs.ru
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 arch/powerpc/kernel/prom_init.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/arch/powerpc/kernel/prom_init.c b/arch/powerpc/kernel/prom_init.c
index 577345382b23f..673f13b87db13 100644
--- a/arch/powerpc/kernel/prom_init.c
+++ b/arch/powerpc/kernel/prom_init.c
@@ -1773,6 +1773,9 @@ static void __init prom_rtas_os_term(char *str)
 	if (token == 0)
 		prom_panic("Could not get token for ibm,os-term\n");
 	os_term_args.token = cpu_to_be32(token);
+	os_term_args.nargs = cpu_to_be32(1);
+	os_term_args.nret = cpu_to_be32(1);
+	os_term_args.args[0] = cpu_to_be32(__pa(str));
 	prom_rtas_hcall((uint64_t)&os_term_args);
 }
 #endif /* CONFIG_PPC_SVM */
-- 
2.20.1