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Commit da0aa3dd authored by Borislav Petkov's avatar Borislav Petkov Committed by Thomas Gleixner
Browse files

x86/microcode/AMD: Remove struct cont_desc.eq_id 



The equivalence ID was needed outside of the container scanning logic
but now, after this has been cleaned up, not anymore. Now, cont_desc.mc
is used to denote whether the container we're looking at has the proper
microcode patch for this CPU or not.

Signed-off-by: default avatarBorislav Petkov <bp@suse.de>
Link: http://lkml.kernel.org/r/20170120202955.4091-17-bp@alien8.de


Signed-off-by: default avatarThomas Gleixner <tglx@linutronix.de>
parent 69f5f983

arch/x86/kernel/cpu/microcode/amd.c

+4 −10
Original line number Diff line number Diff line
@@ -49,7 +49,6 @@ struct cont_desc { 
	struct microcode_amd *mc;

	u32		     cpuid_1_eax;

	u32		     psize;

	u16		     eq_id;

	u8		     *data;

	size_t		     size;

};
@@ -92,10 +91,8 @@ static ssize_t parse_container(u8 *ucode, ssize_t size, struct cont_desc *desc) 
	/* Am I looking at an equivalence table header? */

	if (hdr[0] != UCODE_MAGIC ||

	    hdr[1] != UCODE_EQUIV_CPU_TABLE_TYPE ||

	    hdr[2] == 0) {

		desc->eq_id = 0;

	    hdr[2] == 0)

		return CONTAINER_HDR_SZ;

	}



	buf = ucode;
@@ -147,7 +144,6 @@ static ssize_t parse_container(u8 *ucode, ssize_t size, struct cont_desc *desc) 
	 * buffer.

	 */

	if (desc->mc) {

		desc->eq_id = eq_id;

		desc->data = ucode;

		desc->size = orig_size - size;
@@ -220,8 +216,6 @@ apply_microcode_early_amd(u32 cpuid_1_eax, void *ucode, size_t size, bool save_p 
	desc.cpuid_1_eax = cpuid_1_eax;



	scan_containers(ucode, size, &desc);

	if (!desc.eq_id)

		return ret;



	mc = desc.mc;

	if (!mc)
@@ -341,7 +335,7 @@ int __init save_microcode_in_initrd_amd(unsigned int cpuid_1_eax) 
	desc.cpuid_1_eax = cpuid_1_eax;



	scan_containers(cp.data, cp.size, &desc);

	if (!desc.eq_id)

	if (!desc.mc)

		return -EINVAL;



	ret = load_microcode_amd(smp_processor_id(), x86_family(cpuid_1_eax),