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From: Borislav Petkov <bp@alien8.de>
To: Andy Lutomirski <luto@amacapital.net>,
	Masami Hiramatsu <mhiramat@kernel.org>
Cc: X86 ML <x86@kernel.org>, LKML <linux-kernel@vger.kernel.org>
Subject: [PATCH v1 05/19] x86/boot/compressed/sev-es: Convert to insn_decode()
Date: Wed, 23 Dec 2020 18:42:19 +0100	[thread overview]
Message-ID: <20201223174233.28638-6-bp@alien8.de> (raw)
In-Reply-To: <20201223174233.28638-1-bp@alien8.de>

From: Borislav Petkov <bp@suse.de>

Other than simplifying the code there should be no functional changes
resulting from this.

Signed-off-by: Borislav Petkov <bp@suse.de>
---
 arch/x86/boot/compressed/sev-es.c | 11 +++++------
 1 file changed, 5 insertions(+), 6 deletions(-)

diff --git a/arch/x86/boot/compressed/sev-es.c b/arch/x86/boot/compressed/sev-es.c
index 27826c265aab..801c626fc3d4 100644
--- a/arch/x86/boot/compressed/sev-es.c
+++ b/arch/x86/boot/compressed/sev-es.c
@@ -78,16 +78,15 @@ static inline void sev_es_wr_ghcb_msr(u64 val)
 static enum es_result vc_decode_insn(struct es_em_ctxt *ctxt)
 {
 	char buffer[MAX_INSN_SIZE];
-	enum es_result ret;
+	int ret;
 
 	memcpy(buffer, (unsigned char *)ctxt->regs->ip, MAX_INSN_SIZE);
 
-	insn_init(&ctxt->insn, buffer, MAX_INSN_SIZE, 1);
-	insn_get_length(&ctxt->insn);
+	ret = insn_decode(&ctxt->insn, buffer, MAX_INSN_SIZE, INSN_MODE_64);
+	if (ret < 0)
+		return ES_DECODE_FAILED;
 
-	ret = ctxt->insn.immediate.got ? ES_OK : ES_DECODE_FAILED;
-
-	return ret;
+	return ES_OK;
 }
 
 static enum es_result vc_write_mem(struct es_em_ctxt *ctxt,
-- 
2.29.2


  parent reply	other threads:[~2020-12-23 17:44 UTC|newest]

Thread overview: 42+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-12-23 17:42 [PATCH v1 00/19] x86/insn: Add an insn_decode() API Borislav Petkov
2020-12-23 17:42 ` [PATCH v1 01/19] x86/insn: Rename insn_decode() to insn_decode_regs() Borislav Petkov
2020-12-28 17:16   ` Sean Christopherson
2020-12-29 19:36     ` Borislav Petkov
2020-12-23 17:42 ` [PATCH v1 02/19] x86/insn: Add @buf_len param to insn_init() kernel-doc comment Borislav Petkov
2020-12-28  1:44   ` Masami Hiramatsu
2020-12-23 17:42 ` [PATCH v1 03/19] x86/insn: Add an insn_decode() API Borislav Petkov
2020-12-28  1:15   ` Masami Hiramatsu
2020-12-29 20:06     ` Borislav Petkov
2020-12-30  9:00       ` Masami Hiramatsu
2020-12-30  9:28         ` Borislav Petkov
2021-01-06  5:21           ` Masami Hiramatsu
2021-01-08 18:59             ` Borislav Petkov
2021-01-12 11:34               ` Masami Hiramatsu
2021-01-13 18:06                 ` Borislav Petkov
2020-12-23 17:42 ` [PATCH v1 04/19] x86/insn-eval: Handle return values from the decoder Borislav Petkov
2020-12-28 18:51   ` Sean Christopherson
2020-12-28 19:06     ` Borislav Petkov
2020-12-23 17:42 ` Borislav Petkov [this message]
2020-12-23 17:42 ` [PATCH v1 06/19] perf/x86/intel/ds: Check insn_get_length() retval Borislav Petkov
2021-01-04 13:19   ` Peter Zijlstra
2021-01-19 10:40     ` Borislav Petkov
2020-12-23 17:42 ` [PATCH v1 07/19] perf/x86/intel/ds: Check return values of insn decoder functions Borislav Petkov
2020-12-23 17:42 ` [PATCH v1 08/19] x86/alternative: Use insn_decode() Borislav Petkov
2020-12-23 17:42 ` [PATCH v1 09/19] x86/mce: Convert to insn_decode() Borislav Petkov
2020-12-23 17:42 ` [PATCH v1 10/19] x86/kprobes: " Borislav Petkov
2020-12-23 17:42 ` [PATCH v1 11/19] x86/sev-es: " Borislav Petkov
2020-12-25 10:50   ` kernel test robot
2020-12-25 12:33     ` Borislav Petkov
2020-12-28 19:15       ` Sean Christopherson
2021-01-21 16:58         ` Borislav Petkov
2021-01-21 22:35           ` Sean Christopherson
2020-12-23 17:42 ` [PATCH v1 12/19] x86/traps: " Borislav Petkov
2020-12-23 17:42 ` [PATCH v1 13/19] x86/uprobes: " Borislav Petkov
2020-12-23 17:42 ` [PATCH v1 14/19] x86/tools/insn_decoder_test: " Borislav Petkov
2020-12-23 17:42 ` [PATCH v1 15/19] tools/objtool: " Borislav Petkov
2020-12-23 17:42 ` [PATCH v1 16/19] x86/tools/insn_sanity: " Borislav Petkov
2020-12-23 17:42 ` [PATCH v1 17/19] tools/perf: " Borislav Petkov
2020-12-23 17:42 ` [PATCH v1 18/19] x86/insn: Remove kernel_insn_init() Borislav Petkov
2020-12-23 17:42 ` [PATCH v1 19/19] x86/insn: Make insn_complete() static Borislav Petkov
2020-12-27 15:26 ` [PATCH v1 00/19] x86/insn: Add an insn_decode() API Tom Lendacky
2021-02-03 12:00   ` Borislav Petkov

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