linux-kernel - [PATCH 5.10 055/104] x86/sev-es: Move sev_es_put

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Date:   Mon, 24 May 2021 17:25:50 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Tom Lendacky <thomas.lendacky@....com>,
        Borislav Petkov <bp@...e.de>
Subject: [PATCH 5.10 055/104] x86/sev-es: Move sev_es_put_ghcb() in prep for follow on patch

From: Tom Lendacky <thomas.lendacky@....com>

commit fea63d54f7a3e74f8ab489a8b82413a29849a594 upstream.

Move the location of sev_es_put_ghcb() in preparation for an update to it
in a follow-on patch. This will better highlight the changes being made
to the function.

No functional change.

Fixes: 0786138c78e79 ("x86/sev-es: Add a Runtime #VC Exception Handler")
Signed-off-by: Tom Lendacky <thomas.lendacky@....com>
Signed-off-by: Borislav Petkov <bp@...e.de>
Cc: stable@...r.kernel.org
Link: https://lkml.kernel.org/r/8c07662ec17d3d82e5c53841a1d9e766d3bdbab6.1621273353.git.thomas.lendacky@amd.com
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 arch/x86/kernel/sev-es.c |   36 ++++++++++++++++++------------------
 1 file changed, 18 insertions(+), 18 deletions(-)

--- a/arch/x86/kernel/sev-es.c
+++ b/arch/x86/kernel/sev-es.c
@@ -209,24 +209,6 @@ static __always_inline struct ghcb *sev_
 	return ghcb;
 }
 
-static __always_inline void sev_es_put_ghcb(struct ghcb_state *state)
-{
-	struct sev_es_runtime_data *data;
-	struct ghcb *ghcb;
-
-	data = this_cpu_read(runtime_data);
-	ghcb = &data->ghcb_page;
-
-	if (state->ghcb) {
-		/* Restore GHCB from Backup */
-		*ghcb = *state->ghcb;
-		data->backup_ghcb_active = false;
-		state->ghcb = NULL;
-	} else {
-		data->ghcb_active = false;
-	}
-}
-
 /* Needed in vc_early_forward_exception */
 void do_early_exception(struct pt_regs *regs, int trapnr);
 
@@ -434,6 +416,24 @@ static enum es_result vc_slow_virt_to_ph
 /* Include code shared with pre-decompression boot stage */
 #include "sev-es-shared.c"
 
+static __always_inline void sev_es_put_ghcb(struct ghcb_state *state)
+{
+	struct sev_es_runtime_data *data;
+	struct ghcb *ghcb;
+
+	data = this_cpu_read(runtime_data);
+	ghcb = &data->ghcb_page;
+
+	if (state->ghcb) {
+		/* Restore GHCB from Backup */
+		*ghcb = *state->ghcb;
+		data->backup_ghcb_active = false;
+		state->ghcb = NULL;
+	} else {
+		data->ghcb_active = false;
+	}
+}
+
 void noinstr __sev_es_nmi_complete(void)
 {
 	struct ghcb_state state;