From: Andrew Cooper <andrew.cooper3@citrix.com>
To: Xen-devel <xen-devel@lists.xenproject.org>
Cc: "Andrew Cooper" <andrew.cooper3@citrix.com>,
"Jan Beulich" <JBeulich@suse.com>,
"Roger Pau Monné" <roger.pau@citrix.com>, "Wei Liu" <wl@xen.org>,
"Ian Jackson" <iwj@xenproject.org>
Subject: [PATCH for-4.15] x86/ucode: Fix microcode payload size for Fam19 processors
Date: Tue, 9 Feb 2021 15:33:36 +0000 [thread overview]
Message-ID: <20210209153336.4016-1-andrew.cooper3@citrix.com> (raw)
The original limit provided wasn't accurate. Blobs are in fact rather larger.
Fixes: fe36a173d1 ("x86/amd: Initial support for Fam19h processors")
Signed-off-by: Andrew Cooper <andrew.cooper3@citrix.com>
---
CC: Jan Beulich <JBeulich@suse.com>
CC: Roger Pau Monné <roger.pau@citrix.com>
CC: Wei Liu <wl@xen.org>
CC: Ian Jackson <iwj@xenproject.org>
For 4.15. This is a very targetted fix at AMD Zen3 processors. Without it,
microcode loading doesn't function.
---
xen/arch/x86/cpu/microcode/amd.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/xen/arch/x86/cpu/microcode/amd.c b/xen/arch/x86/cpu/microcode/amd.c
index 5255028af7..c4ab395799 100644
--- a/xen/arch/x86/cpu/microcode/amd.c
+++ b/xen/arch/x86/cpu/microcode/amd.c
@@ -111,7 +111,7 @@ static bool verify_patch_size(uint32_t patch_size)
#define F15H_MPB_MAX_SIZE 4096
#define F16H_MPB_MAX_SIZE 3458
#define F17H_MPB_MAX_SIZE 3200
-#define F19H_MPB_MAX_SIZE 4800
+#define F19H_MPB_MAX_SIZE 5568
switch ( boot_cpu_data.x86 )
{
--
2.11.0
next reply other threads:[~2021-02-09 15:34 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-02-09 15:33 Andrew Cooper [this message]
2021-02-09 16:48 ` [PATCH for-4.15] x86/ucode: Fix microcode payload size for Fam19 processors Jan Beulich
2021-02-09 17:17 ` Ian Jackson
2021-02-09 17:39 ` Andrew Cooper
2021-02-09 18:01 ` Ian Jackson
2021-02-10 8:37 ` Jan Beulich
2021-02-10 13:06 ` Andrew Cooper
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