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From: Kristen Carlson Accardi <kristen@linux.intel.com>
To: linux-sgx@vger.kernel.org, dave.hansen@intel.com
Cc: haitao.huang@linux.intel.com, jarkko@kernel.org
Subject: [PATCH 1/2] x86/sgx: fixup for available backing pages calculation
Date: Wed, 26 Jan 2022 11:17:10 -0800	[thread overview]
Message-ID: <20220126191711.4917-2-kristen@linux.intel.com> (raw)
In-Reply-To: <20220126191711.4917-1-kristen@linux.intel.com>

Remove improper parentheses from calculation for available
backing bytes. Wtihout this fix, the result will be incorrect
due to rounding.

Signed-off-by: Kristen Carlson Accardi <kristen@linux.intel.com>
Acked-by: Jarkko Sakkinen <jarkko@kernel.org>
---
 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 990f341bbd30..c4030fb608c6 100644
--- a/arch/x86/kernel/cpu/sgx/main.c
+++ b/arch/x86/kernel/cpu/sgx/main.c
@@ -881,7 +881,7 @@ static bool __init sgx_page_cache_init(void)
 		return false;
 	}
 
-	available_backing_bytes = total_epc_bytes * (sgx_overcommit_percent / 100);
+	available_backing_bytes = total_epc_bytes * sgx_overcommit_percent / 100;
 	atomic_long_set(&sgx_nr_available_backing_pages, available_backing_bytes >> PAGE_SHIFT);
 
 	return true;
-- 
2.20.1


  reply	other threads:[~2022-01-26 19:17 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-01-26 19:17 [PATCH 0/2] Fixups for overcommit limit pages Kristen Carlson Accardi
2022-01-26 19:17 ` Kristen Carlson Accardi [this message]
2022-01-26 20:17   ` [PATCH 1/2] x86/sgx: fixup for available backing pages calculation Jarkko Sakkinen
2022-01-26 19:17 ` [PATCH 2/2] x86/sgx: Allow sgx_reclaim_pages() to report failure Kristen Carlson Accardi
2022-01-26 20:19   ` Jarkko Sakkinen
2022-01-26 20:20     ` Jarkko Sakkinen
2022-01-28 18:26   ` Dave Hansen

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