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[70.30.145.63]) by smtp.gmail.com with ESMTPSA id h26-20020ac8515a000000b003b82cb8748dsm5986545qtn.96.2023.02.05.15.17.06 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 05 Feb 2023 15:17:07 -0800 (PST) From: Peter Xu To: linux-mm@kvack.org, linux-kernel@vger.kernel.org Cc: peterx@redhat.com, Andrew Morton , linux-arm-kernel@lists.infradead.org, linux-s390@vger.kernel.org Subject: [PATCH 1/3] mm/arm: Define private VM_FAULT_* reasons from top bits Date: Sun, 5 Feb 2023 18:17:02 -0500 Message-Id: <20230205231704.909536-2-peterx@redhat.com> X-Mailer: git-send-email 2.37.3 In-Reply-To: <20230205231704.909536-1-peterx@redhat.com> References: <20230205231704.909536-1-peterx@redhat.com> MIME-Version: 1.0 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com X-Rspam-User: X-Rspamd-Queue-Id: 91964140006 X-Rspamd-Server: rspam01 X-Stat-Signature: js9d34ipdstpwwpzkja5uxctddear6kk X-HE-Tag: 1675639032-799772 X-HE-Meta: U2FsdGVkX1/y5uA6PljS/eBNK6YIcrS5TwyWbIcKUh+bR2IzkoZBaU86vl0bGzNKip4WEqcMFIAOhS8O1SmSl4JWBqfokOYkk4o1o2TDlPKvSlztO0Oqz9AtnjtbS7fwyhMUOjkrO1Pkbm02Iz/Kq2t5bE226HtVLTDpgyPGVASYBe21r+U8D0neDxeBmacAHUdWqByg5JYF8uD9OVjLcT4rgLLRpJ718ArH1763ceRZ5sgK+JAYMqUyvL3cBcVqEFWPPczp79YiErAaLUd1GXccpD0HPsek9Bccu861tdaH/fGT2fbAKxRYq6zdeSGDsN3K/0528E8leVs0kArWvWuYxv9BWvOxqj1PPz/GPD7ackxziSDr6SNtwFOZztoUW7CnLQNMNRyIRdMu+W2FD/HV4RVZ6EYo4tCAqpJ4SbWWYq3A/l091V1BBmoLhMtOeAzBiIZtxiJu9KdUP1oG8cs1wPcFGLe8r5sQfdbcKsUbSAt2t/gTeQBtAu9WQdCPzBrvdNyNUSBAgLeuFnrN2XncYfNNHWfuIV7GUHjDiyjzfotYaci+RjjPkfOCHkaMRX11lPdyq+rX2yrpznx64xUSspwTafbCs6I/qt35tXk+h1AYmSxk9zMihoFMpAf96JjtkNXnSC1m/dxWxWkFAgLUvaCMcthevUGIi354xcBb6PsGXyPsDOkL/6hA/yxoJNOYZnrY6Y6h/nBHofDy/jvSlsoQBM18gioLRSeEZpRxhYhW9H7StXXtzTIpHiAeXAgR4Gw3W8WgiSzBpgFlR+dd8Z8FQM8DM+G2v2tdFVe0Rgsk4vLReBFi0S9ViEK4I/bzdkZtw/iyxZ+BNXa8RvEGUrRlP6enSJmdjNynSNsHo4WjfDxA0nR8nJvE9+6oTcNDqp43M/LcFVEfZ/6eycIB0NYPMM4xGMgWmuIy2HGpoQ/gKwEjITRCYD60QKx9jlbhJdnzF22Sj+g3FPe SDWjAU88 UkbyMlAlc/mKh+uZZyokhThzqQ90OMd1b4hiwFfvWsLbuFuo2uGpw77M25rGhjDUCh6bxa6PZpRd/bXuQ24oM26QpLUg0hg9XX4//1RlfibPvmRebsqI4xOI6MZNF9j35GvTxTGTWaZMjaNXtY8mcMGQh4c5mTPRjLAsEB4da6hxaflhGVt14EBksdkxnU2a0DaWahMvf8fWukuJxDZrlNfqa1AsvYqFBWNI2TRWc6CboLM/ASotmzmV0xmXCjtlgfZiOwm/8k5jgE3qI9zJxpbULjrcw3PhNyGYnm8stF3Kdp2+JZXHy9Fy844P0POfdp/wc2gEzVvjrY5VlUyr3tvUo/jwva6IhippqKZzDWa78Br36+gMV7m35iOV3/RgsvleAKd17TnHPTcwiSEX1ufNIjPG78t0QUU+neYH0r82vafvzD/jBZpnw960uVIHiM4ub X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: The current definition already collapse with the generic definition of vm_fault_reason. Move the private definitions to allocate bits from the top of uint so they won't collapse anymore. Signed-off-by: Peter Xu --- arch/arm/mm/fault.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) diff --git a/arch/arm/mm/fault.c b/arch/arm/mm/fault.c index 2418f1efabd8..67879d995835 100644 --- a/arch/arm/mm/fault.c +++ b/arch/arm/mm/fault.c @@ -216,8 +216,12 @@ void do_bad_area(unsigned long addr, unsigned int fsr, struct pt_regs *regs) } #ifdef CONFIG_MMU -#define VM_FAULT_BADMAP ((__force vm_fault_t)0x010000) -#define VM_FAULT_BADACCESS ((__force vm_fault_t)0x020000) +/* + * Allocate private vm_fault_reason from top. Please make sure it won't + * collide with vm_fault_reason. + */ +#define VM_FAULT_BADMAP ((__force vm_fault_t)0x80000000) +#define VM_FAULT_BADACCESS ((__force vm_fault_t)0x40000000) static inline bool is_permission_fault(unsigned int fsr) {