From: Sean Christopherson <sean.j.christopherson@intel.com>
To: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Cc: linux-sgx@vger.kernel.org
Subject: [PATCH for_v23 5/9] x86/sgx: WARN only once if EREMOVE fails
Date: Thu, 10 Oct 2019 14:42:57 -0700 [thread overview]
Message-ID: <20191010214301.25669-6-sean.j.christopherson@intel.com> (raw)
In-Reply-To: <20191010214301.25669-1-sean.j.christopherson@intel.com>
WARN only once if EREMOVE fails to avoid spamming the kernel log if a
catastrophic failure occurs. Warning on every failure is helpful for
development, but is a bad idea for production code as EREMOVE rarely
fails just once...
Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com>
---
arch/x86/kernel/cpu/sgx/main.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/x86/kernel/cpu/sgx/main.c b/arch/x86/kernel/cpu/sgx/main.c
index 5170d4ba1096..84a44251387b 100644
--- a/arch/x86/kernel/cpu/sgx/main.c
+++ b/arch/x86/kernel/cpu/sgx/main.c
@@ -137,7 +137,7 @@ int sgx_free_page(struct sgx_epc_page *page)
spin_unlock(&sgx_active_page_list_lock);
ret = __eremove(sgx_epc_addr(page));
- WARN(ret, "EREMOVE returned %d (0x%x)", ret, ret);
+ WARN_ONCE(ret, "EREMOVE returned %d (0x%x)", ret, ret);
spin_lock(§ion->lock);
list_add_tail(&page->list, §ion->page_list);
--
2.22.0
next prev parent reply other threads:[~2019-10-10 21:43 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-10-10 21:42 [PATCH for_v23 0/9] x86/sgx: misc page related fixes Sean Christopherson
2019-10-10 21:42 ` [PATCH for_v23 1/9] x86/sgx: WARN once if an enclave is released with unfreed EPC pages Sean Christopherson
2019-10-14 20:31 ` Jarkko Sakkinen
2019-10-14 20:33 ` Jarkko Sakkinen
2019-10-14 23:56 ` Sean Christopherson
2019-10-10 21:42 ` [PATCH for_v23 2/9] x86/sgx: Do not EWB SECS if the enclave is dead Sean Christopherson
2019-10-14 20:58 ` Jarkko Sakkinen
2019-10-10 21:42 ` [PATCH for_v23 3/9] x86/sgx: Fix a memory leak in sgx_encl_destroy() Sean Christopherson
2019-10-10 22:49 ` Sean Christopherson
2019-10-14 21:00 ` Jarkko Sakkinen
2019-10-14 23:57 ` Sean Christopherson
2019-10-10 21:42 ` [PATCH for_v23 4/9] x86/sgx: WARN on any non-zero return from __eremove() Sean Christopherson
2019-10-10 21:42 ` Sean Christopherson [this message]
2019-10-10 21:42 ` [PATCH for_v23 6/9] x86/sgx: Split second half of sgx_free_page() to a separate helper Sean Christopherson
2019-10-10 21:42 ` [PATCH for_v23 7/9] x86/sgx: Use the post-reclaim variant of __sgx_free_page() Sean Christopherson
2019-10-10 21:43 ` [PATCH for_v23 8/9] x86/sgx: Don't update free page count if EPC section allocation fails Sean Christopherson
2019-10-10 21:43 ` [PATCH for_v23 9/9] x86/sgx: Reinstate per EPC section free page counts Sean Christopherson
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