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From: Sean Christopherson <sean.j.christopherson@intel.com>
To: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Cc: linux-sgx@vger.kernel.org, Andy Lutomirski <luto@kernel.org>
Subject: [PATCH for_v22 v2 4/8] x86/sgx: Set SGX_ENCL_PAGE_TCS when allocating encl_page
Date: Mon, 12 Aug 2019 18:12:48 -0700
Message-ID: <20190813011252.4121-5-sean.j.christopherson@intel.com> (raw)
In-Reply-To: <20190813011252.4121-1-sean.j.christopherson@intel.com>

Set SGX_ENCL_PAGE_TCS when encl_page->desc is initialized in
sgx_encl_page_alloc() to improve readability, and so that the code
isn't affected when the bulk of __sgx_encl_add_page() is rewritten
to remove the EADD worker in a future patch.

Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com>
---
 arch/x86/kernel/cpu/sgx/driver/ioctl.c | 11 ++++++-----
 1 file changed, 6 insertions(+), 5 deletions(-)

diff --git a/arch/x86/kernel/cpu/sgx/driver/ioctl.c b/arch/x86/kernel/cpu/sgx/driver/ioctl.c
index 5831f51d64cd..2b3b86412131 100644
--- a/arch/x86/kernel/cpu/sgx/driver/ioctl.c
+++ b/arch/x86/kernel/cpu/sgx/driver/ioctl.c
@@ -247,7 +247,8 @@ static int sgx_validate_secs(const struct sgx_secs *secs,
 
 static struct sgx_encl_page *sgx_encl_page_alloc(struct sgx_encl *encl,
 						 unsigned long addr,
-						 unsigned long prot)
+						 unsigned long prot,
+						 u64 page_type)
 {
 	struct sgx_encl_page *encl_page;
 	int ret;
@@ -258,6 +259,8 @@ static struct sgx_encl_page *sgx_encl_page_alloc(struct sgx_encl *encl,
 	if (!encl_page)
 		return ERR_PTR(-ENOMEM);
 	encl_page->desc = addr;
+	if (page_type == SGX_SECINFO_TCS)
+		encl_page->desc |= SGX_ENCL_PAGE_TCS;
 	encl_page->encl = encl;
 	encl_page->vm_prot_bits = calc_vm_prot_bits(prot, 0);
 	ret = radix_tree_insert(&encl->page_tree, PFN_DOWN(encl_page->desc),
@@ -476,7 +479,6 @@ static int __sgx_encl_add_page(struct sgx_encl *encl,
 			       unsigned int mrmask)
 {
 	unsigned long page_index = sgx_encl_get_index(encl_page);
-	u64 page_type = secinfo->flags & SGX_SECINFO_PAGE_TYPE_MASK;
 	struct sgx_add_page_req *req = NULL;
 	struct page *backing;
 	void *backing_ptr;
@@ -495,8 +497,7 @@ static int __sgx_encl_add_page(struct sgx_encl *encl,
 	backing_ptr = kmap(backing);
 	memcpy(backing_ptr, data, PAGE_SIZE);
 	kunmap(backing);
-	if (page_type == SGX_SECINFO_TCS)
-		encl_page->desc |= SGX_ENCL_PAGE_TCS;
+
 	memcpy(&req->secinfo, secinfo, sizeof(*secinfo));
 	req->encl = encl;
 	req->encl_page = encl_page;
@@ -533,7 +534,7 @@ static int sgx_encl_add_page(struct sgx_encl *encl, unsigned long addr,
 		goto err_out_unlock;
 	}
 
-	encl_page = sgx_encl_page_alloc(encl, addr, prot);
+	encl_page = sgx_encl_page_alloc(encl, addr, prot, page_type);
 	if (IS_ERR(encl_page)) {
 		ret = PTR_ERR(encl_page);
 		goto err_out_shrink;
-- 
2.22.0


  parent reply index

Thread overview: 22+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-08-13  1:12 [PATCH for_v22 v2 0/8] x86/sgx: Remove EADD worker and page copy Sean Christopherson
2019-08-13  1:12 ` [PATCH for_v22 v2 1/8] selftests/x86/sgx: Align enclave binary on 4k boundary Sean Christopherson
2019-08-16 13:55   ` Jarkko Sakkinen
2019-08-16 15:36     ` Jethro Beekman
2019-08-16 23:41       ` Jarkko Sakkinen
2019-08-13  1:12 ` [PATCH for_v22 v2 2/8] x86/sgx: Require EADD source to be page aligned Sean Christopherson
2019-08-16 14:15   ` Jarkko Sakkinen
2019-08-13  1:12 ` [PATCH for_v22 v2 3/8] x86/sgx: Validate generic SECINFO immediately after copying from user Sean Christopherson
2019-08-13  1:12 ` Sean Christopherson [this message]
2019-08-22 12:56   ` [PATCH for_v22 v2 4/8] x86/sgx: Set SGX_ENCL_PAGE_TCS when allocating encl_page Jarkko Sakkinen
2019-08-22 14:24     ` Sean Christopherson
2019-08-13  1:12 ` [PATCH for_v22 v2 5/8] x86/sgx: Move encl_page insertion into tree out of alloc flow Sean Christopherson
2019-08-13  1:12 ` [PATCH for_v22 v2 6/8] x86/sgx: Allocate encl_page prior to taking encl->lock Sean Christopherson
2019-08-13  1:12 ` [PATCH for_v22 v2 7/8] x86/sgx: Remove the EADD page worker Sean Christopherson
2019-08-13  1:12 ` [PATCH for_v22 v2 8/8] x86/sgx: Pass userspace source address directly to EADD Sean Christopherson
2019-08-22 14:37   ` Jarkko Sakkinen
2019-08-22 14:50     ` Sean Christopherson
2019-08-22 17:00       ` Jarkko Sakkinen
2019-08-23  1:25         ` Jarkko Sakkinen
2019-08-23  1:28           ` Sean Christopherson
2019-08-23  1:34             ` Sean Christopherson
2019-08-15 22:00 ` [PATCH for_v22 v2 0/8] x86/sgx: Remove EADD worker and page copy Jarkko Sakkinen

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