[PATCH for-4.15] x86/ucode: Fix microcode payload size for Fam19 processors

[Andrew Cooper <andrew.cooper3@xxxxxxxxxx>]

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@xxxxxxxxxx>
---
CC: Jan Beulich <JBeulich@xxxxxxxx>
CC: Roger Pau Monné <roger.pau@xxxxxxxxxx>
CC: Wei Liu <wl@xxxxxxx>
CC: Ian Jackson <iwj@xxxxxxxxxxxxxx>

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