linux-kernel - [kas:lam 16/16] arch/x86/kernel/process_64.c:796:27: error: 'struct mm

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Date:   Fri, 30 Sep 2022 12:15:03 +0800
From:   kernel test robot <lkp@...el.com>
To:     "Kirill A. Shutemov" <kirill.shutemov@...ux.intel.com>
Cc:     kbuild-all@...ts.01.org, linux-kernel@...r.kernel.org
Subject: [kas:lam 16/16] arch/x86/kernel/process_64.c:796:27: error: 'struct
 mm_struct' has no member named 'pasid'

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/kas/linux.git lam
head:   2ebc300f734787b39a936549e0f0b1317c87c55e
commit: 2ebc300f734787b39a936549e0f0b1317c87c55e [16/16] x86/mm, iommu/sva: Make LAM and SVM mutually exclusive
config: x86_64-randconfig-a002
compiler: gcc-11 (Debian 11.3.0-5) 11.3.0
reproduce (this is a W=1 build):
        # https://git.kernel.org/pub/scm/linux/kernel/git/kas/linux.git/commit/?id=2ebc300f734787b39a936549e0f0b1317c87c55e
        git remote add kas https://git.kernel.org/pub/scm/linux/kernel/git/kas/linux.git
        git fetch --no-tags kas lam
        git checkout 2ebc300f734787b39a936549e0f0b1317c87c55e
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        make W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash

If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@...el.com>

All errors (new ones prefixed by >>):

   arch/x86/kernel/process_64.c: In function 'prctl_enable_tagged_addr':
>> arch/x86/kernel/process_64.c:796:27: error: 'struct mm_struct' has no member named 'pasid'
     796 |         if (pasid_valid(mm->pasid) &&
         |                           ^~


vim +796 arch/x86/kernel/process_64.c

   779	
   780	static int prctl_enable_tagged_addr(struct mm_struct *mm, unsigned long nr_bits)
   781	{
   782		int ret = 0;
   783	
   784		if (!cpu_feature_enabled(X86_FEATURE_LAM))
   785			return -ENODEV;
   786	
   787		if (mmap_write_lock_killable(mm))
   788			return -EINTR;
   789	
   790		/* Already enabled? */
   791		if (mm->context.lam_cr3_mask) {
   792			ret = -EBUSY;
   793			goto out;
   794		}
   795	
 > 796		if (pasid_valid(mm->pasid) &&
   797		    !(mm->context.flags & MM_CONTEXT_FORCE_TAGGED_SVM)) {
   798			ret = -EBUSY;
   799			goto out;
   800		}
   801	
   802		if (!nr_bits) {
   803			ret = -EINVAL;
   804			goto out;
   805		} else if (nr_bits <= LAM_U57_BITS) {
   806			mm->context.lam_cr3_mask = X86_CR3_LAM_U57;
   807			mm->context.untag_mask =  ~GENMASK(62, 57);
   808		} else if (nr_bits <= LAM_U48_BITS) {
   809			if (!lam_u48_allowed()) {
   810				ret = -EBUSY;
   811				goto out;
   812			}
   813	
   814			mm->context.lam_cr3_mask = X86_CR3_LAM_U48;
   815			mm->context.untag_mask =  ~GENMASK(62, 48);
   816		} else {
   817			ret = -EINVAL;
   818			goto out;
   819		}
   820	
   821		on_each_cpu_mask(mm_cpumask(mm), enable_lam_func, mm, true);
   822		static_branch_enable(&tagged_addr_key);
   823	out:
   824		mmap_write_unlock(mm);
   825		return ret;
   826	}
   827	

-- 
0-DAY CI Kernel Test Service
https://01.org/lkp

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