From: Borislav Petkov <bp@alien8.de>
To: X86 ML <x86@kernel.org>
Cc: LKML <linux-kernel@vger.kernel.org>
Subject: [PATCH 1/5] x86/CPU: Add native CPUID variants returning a single datum
Date: Mon, 9 Jan 2017 12:41:43 +0100 [thread overview]
Message-ID: <20170109114147.5082-2-bp@alien8.de> (raw)
In-Reply-To: <20170109114147.5082-1-bp@alien8.de>
From: Borislav Petkov <bp@suse.de>
... similarly to the cpuid_<reg>() variants.
Signed-off-by: Borislav Petkov <bp@suse.de>
---
arch/x86/include/asm/processor.h | 18 ++++++++++++++++++
1 file changed, 18 insertions(+)
diff --git a/arch/x86/include/asm/processor.h b/arch/x86/include/asm/processor.h
index eaf100508c36..1be64da0384e 100644
--- a/arch/x86/include/asm/processor.h
+++ b/arch/x86/include/asm/processor.h
@@ -219,6 +219,24 @@ static inline void native_cpuid(unsigned int *eax, unsigned int *ebx,
: "memory");
}
+#define native_cpuid_reg(reg) \
+static inline unsigned int native_cpuid_##reg(unsigned int op) \
+{ \
+ unsigned int eax = op, ebx, ecx = 0, edx; \
+ \
+ native_cpuid(&eax, &ebx, &ecx, &edx); \
+ \
+ return reg; \
+}
+
+/*
+ * Native CPUID functions returning a single datum.
+ */
+native_cpuid_reg(eax)
+native_cpuid_reg(ebx)
+native_cpuid_reg(ecx)
+native_cpuid_reg(edx)
+
static inline void load_cr3(pgd_t *pgdir)
{
write_cr3(__pa(pgdir));
--
2.11.0
next prev parent reply other threads:[~2017-01-09 11:41 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-01-09 11:41 [PATCH 0/5] x86/microcode: More urgent fixes Borislav Petkov
2017-01-09 11:41 ` Borislav Petkov [this message]
2017-01-09 22:16 ` [tip:x86/urgent] x86/CPU: Add native CPUID variants returning a single datum tip-bot for Borislav Petkov
2017-01-10 0:19 ` hpa
2017-01-10 9:04 ` Borislav Petkov
2017-01-10 16:40 ` hpa
2017-01-10 17:09 ` Borislav Petkov
2017-01-09 11:41 ` [PATCH 2/5] x86/microcode: Use native CPUID to tickle out microcode revision Borislav Petkov
2017-01-09 22:16 ` [tip:x86/urgent] " tip-bot for Borislav Petkov
2017-01-09 11:41 ` [PATCH 3/5] x86/microcode/intel: Add a helper which gives the " Borislav Petkov
2017-01-09 22:17 ` [tip:x86/urgent] " tip-bot for Borislav Petkov
2017-01-09 11:41 ` [PATCH 4/5] x86/microcode/intel: Fix allocation size of struct ucode_patch Borislav Petkov
2017-01-09 11:41 ` [PATCH 5/5] x86/microcode/intel: Use correct buffer size for saving microcode data Borislav Petkov
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20170109114147.5082-2-bp@alien8.de \
--to=bp@alien8.de \
--cc=linux-kernel@vger.kernel.org \
--cc=x86@kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).