From: Haitao Huang <haitao.huang@linux.intel.com>
To: linux-sgx@vger.kernel.org, jarkko@kernel.org,
reinette.chatre@intel.com, dave.hansen@linux.intel.com,
vijay.dhanraj@intel.com
Subject: [PATCH] x86/sgx: handle VA page allocation failure for EAUG on PF.
Date: Fri, 12 Aug 2022 12:12:24 -0700 [thread overview]
Message-ID: <20220812191224.15561-1-haitao.huang@linux.intel.com> (raw)
Return VM_FAULT_NOPAGE to allow the swapping thread to catch up.
link: https://lore.kernel.org/all/20220804201456.33418-1-vijay.dhanraj@intel.com/
Signed-off-by: Haitao Huang <haitao.huang@linux.intel.com>
---
arch/x86/kernel/cpu/sgx/encl.c | 7 +++++--
1 file changed, 5 insertions(+), 2 deletions(-)
diff --git a/arch/x86/kernel/cpu/sgx/encl.c b/arch/x86/kernel/cpu/sgx/encl.c
index 24c1bb8eb196..1f88f80c4477 100644
--- a/arch/x86/kernel/cpu/sgx/encl.c
+++ b/arch/x86/kernel/cpu/sgx/encl.c
@@ -344,8 +344,11 @@ static vm_fault_t sgx_encl_eaug_page(struct vm_area_struct *vma,
}
va_page = sgx_encl_grow(encl, false);
- if (IS_ERR(va_page))
- goto err_out_epc;
+ if (IS_ERR(va_page)) {
+ if (PTR_ERR(va_page) == -EBUSY)
+ vmret = VM_FAULT_NOPAGE;
+ goto err_out_epc;
+ }
if (va_page)
list_add(&va_page->list, &encl->va_pages);
--
2.25.1
next reply other threads:[~2022-08-12 19:12 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-08-12 19:12 Haitao Huang [this message]
2022-08-12 22:41 ` [PATCH] x86/sgx: handle VA page allocation failure for EAUG on PF Dhanraj, Vijay
2022-08-14 19:41 ` jarkko
2022-08-14 19:36 ` Jarkko Sakkinen
2022-08-15 4:53 ` Haitao Huang
2022-08-15 23:21 ` Jarkko Sakkinen
2022-08-15 15:01 ` Haitao Huang
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