mirror of https://lore.kernel.org/lkml/
 help / color / mirror / Atom feed
From: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>
To: tglx@linutronix.de, mingo@redhat.com, bp@alien8.de,
	dave.hansen@intel.com
Cc: sathyanarayanan.kuppuswamy@linux.intel.com, hpa@zytor.com,
	seanjc@google.com, elena.reshetova@intel.com,
	rick.p.edgecombe@intel.com, x86@kernel.org,
	linux-kernel@vger.kernel.org,
	"Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>
Subject: [PATCHv2 2/4] x86/tdx: Rename tdx_parse_tdinfo() to tdx_setup()
Date: Mon, 25 Mar 2024 12:46:05 +0200	[thread overview]
Message-ID: <20240325104607.2653307-3-kirill.shutemov@linux.intel.com> (raw)
In-Reply-To: <20240325104607.2653307-1-kirill.shutemov@linux.intel.com>

Rename tdx_parse_tdinfo() to tdx_setup() and move setting NOTIFY_ENABLES
there.

The function will be extended to adjust TD configuration.

Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Reviewed-by: Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@linux.intel.com>
---
 arch/x86/coco/tdx/tdx.c | 13 ++++++++-----
 1 file changed, 8 insertions(+), 5 deletions(-)

diff --git a/arch/x86/coco/tdx/tdx.c b/arch/x86/coco/tdx/tdx.c
index 4fb36e5c4e80..08e2bb462ce8 100644
--- a/arch/x86/coco/tdx/tdx.c
+++ b/arch/x86/coco/tdx/tdx.c
@@ -181,7 +181,7 @@ static void __noreturn tdx_panic(const char *msg)
 		__tdx_hypercall(&args);
 }
 
-static void tdx_parse_tdinfo(u64 *cc_mask)
+static void tdx_setup(u64 *cc_mask)
 {
 	struct tdx_module_args args = {};
 	unsigned int gpa_width;
@@ -206,6 +206,9 @@ static void tdx_parse_tdinfo(u64 *cc_mask)
 	gpa_width = args.rcx & GENMASK(5, 0);
 	*cc_mask = BIT_ULL(gpa_width - 1);
 
+	/* Kernel does not use NOTIFY_ENABLES and does not need random #VEs */
+	tdg_vm_wr(TDCS_NOTIFY_ENABLES, 0, -1ULL);
+
 	/*
 	 * The kernel can not handle #VE's when accessing normal kernel
 	 * memory.  Ensure that no #VE will be delivered for accesses to
@@ -930,11 +933,11 @@ void __init tdx_early_init(void)
 	setup_force_cpu_cap(X86_FEATURE_TSC_RELIABLE);
 
 	cc_vendor = CC_VENDOR_INTEL;
-	tdx_parse_tdinfo(&cc_mask);
-	cc_set_mask(cc_mask);
 
-	/* Kernel does not use NOTIFY_ENABLES and does not need random #VEs */
-	tdg_vm_wr(TDCS_NOTIFY_ENABLES, 0, -1ULL);
+	/* Configure the TD */
+	tdx_setup(&cc_mask);
+
+	cc_set_mask(cc_mask);
 
 	/*
 	 * All bits above GPA width are reserved and kernel treats shared bit
-- 
2.43.0


  parent reply	other threads:[~2024-03-25 10:46 UTC|newest]

Thread overview: 17+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2024-03-25 10:46 [PATCHv2 0/4] x86/tdx: Adjust TD settings on boot Kirill A. Shutemov
2024-03-25 10:46 ` [PATCHv2 1/4] x86/tdx: Introduce tdg_vm_wr() Kirill A. Shutemov
2024-03-26 10:45   ` Huang, Kai
2024-03-26 14:56   ` Kuppuswamy Sathyanarayanan
2024-04-24 17:53   ` Dave Hansen
2024-03-25 10:46 ` Kirill A. Shutemov [this message]
2024-03-26 10:45   ` [PATCHv2 2/4] x86/tdx: Rename tdx_parse_tdinfo() to tdx_setup() Huang, Kai
2024-03-25 10:46 ` [PATCHv2 3/4] x86/tdx: Handle PENDING_EPT_VIOLATION_V2 Kirill A. Shutemov
2024-04-24 18:29   ` Dave Hansen
2024-03-25 10:46 ` [PATCHv2 4/4] x86/tdx: Enable ENUM_TOPOLOGY Kirill A. Shutemov
2024-03-26 10:59   ` Huang, Kai
2024-03-26 12:21     ` kirill.shutemov
2024-04-24 22:20   ` Dave Hansen
2024-04-27 16:53     ` Kirill A. Shutemov
2024-04-10 14:37 ` [PATCHv2 0/4] x86/tdx: Adjust TD settings on boot Kirill A. Shutemov
2024-04-10 14:41   ` Edgecombe, Rick P
2024-04-12 15:01     ` kirill.shutemov

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=20240325104607.2653307-3-kirill.shutemov@linux.intel.com \
    --to=kirill.shutemov@linux.intel.com \
    --cc=bp@alien8.de \
    --cc=dave.hansen@intel.com \
    --cc=elena.reshetova@intel.com \
    --cc=hpa@zytor.com \
    --cc=linux-kernel@vger.kernel.org \
    --cc=mingo@redhat.com \
    --cc=rick.p.edgecombe@intel.com \
    --cc=sathyanarayanan.kuppuswamy@linux.intel.com \
    --cc=seanjc@google.com \
    --cc=tglx@linutronix.de \
    --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

all inboxes | Powered by JetHome®