From: Peter Zijlstra <peterz@infradead.org> To: akpm@linux-foundation.org Cc: linux-kernel@vger.kernel.org, peterz@infradead.org, boris.ostrovsky@oracle.com, jgross@suse.com, sstabellini@kernel.org, x86@kernel.org, jani.nikula@linux.intel.com, joonas.lahtinen@linux.intel.com, rodrigo.vivi@intel.com, chris@chris-wilson.co.uk, intel-gfx@lists.freedesktop.org, linux-mm@kvack.org, keescook@chromium.org, hch@lst.de Subject: [PATCH 6/7] i915: Convert to verify_page_range() Date: Mon, 12 Apr 2021 10:00:18 +0200 [thread overview] Message-ID: <20210412080611.902470568@infradead.org> (raw) In-Reply-To: 20210412080012.357146277@infradead.org check_{present,absent}() only need R/O access, use verify_page_range() instead to remove modular use of apply_to_page_range(). Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> --- drivers/gpu/drm/i915/gem/selftests/i915_gem_mman.c | 16 ++++++++-------- 1 file changed, 8 insertions(+), 8 deletions(-) --- a/drivers/gpu/drm/i915/gem/selftests/i915_gem_mman.c +++ b/drivers/gpu/drm/i915/gem/selftests/i915_gem_mman.c @@ -1225,9 +1225,9 @@ static int igt_mmap_gpu(void *arg) return 0; } -static int check_present_pte(pte_t *pte, unsigned long addr, void *data) +static int check_present_pte(pte_t pte, unsigned long addr, void *data) { - if (!pte_present(*pte) || pte_none(*pte)) { + if (!pte_present(pte) || pte_none(pte)) { pr_err("missing PTE:%lx\n", (addr - (unsigned long)data) >> PAGE_SHIFT); return -EINVAL; @@ -1236,9 +1236,9 @@ static int check_present_pte(pte_t *pte, return 0; } -static int check_absent_pte(pte_t *pte, unsigned long addr, void *data) +static int check_absent_pte(pte_t pte, unsigned long addr, void *data) { - if (pte_present(*pte) && !pte_none(*pte)) { + if (pte_present(pte) && !pte_none(pte)) { pr_err("present PTE:%lx; expected to be revoked\n", (addr - (unsigned long)data) >> PAGE_SHIFT); return -EINVAL; @@ -1249,14 +1249,14 @@ static int check_absent_pte(pte_t *pte, static int check_present(unsigned long addr, unsigned long len) { - return apply_to_page_range(current->mm, addr, len, - check_present_pte, (void *)addr); + return verify_page_range(current->mm, addr, len, + check_present_pte, (void *)addr); } static int check_absent(unsigned long addr, unsigned long len) { - return apply_to_page_range(current->mm, addr, len, - check_absent_pte, (void *)addr); + return verify_page_range(current->mm, addr, len, + check_absent_pte, (void *)addr); } static int prefault_range(u64 start, u64 len)
WARNING: multiple messages have this Message-ID (diff)
From: Peter Zijlstra <peterz@infradead.org> To: akpm@linux-foundation.org Cc: jgross@suse.com, sstabellini@kernel.org, keescook@chromium.org, peterz@infradead.org, intel-gfx@lists.freedesktop.org, x86@kernel.org, linux-kernel@vger.kernel.org, chris@chris-wilson.co.uk, linux-mm@kvack.org, boris.ostrovsky@oracle.com, hch@lst.de Subject: [Intel-gfx] [PATCH 6/7] i915: Convert to verify_page_range() Date: Mon, 12 Apr 2021 10:00:18 +0200 [thread overview] Message-ID: <20210412080611.902470568@infradead.org> (raw) In-Reply-To: 20210412080012.357146277@infradead.org check_{present,absent}() only need R/O access, use verify_page_range() instead to remove modular use of apply_to_page_range(). Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> --- drivers/gpu/drm/i915/gem/selftests/i915_gem_mman.c | 16 ++++++++-------- 1 file changed, 8 insertions(+), 8 deletions(-) --- a/drivers/gpu/drm/i915/gem/selftests/i915_gem_mman.c +++ b/drivers/gpu/drm/i915/gem/selftests/i915_gem_mman.c @@ -1225,9 +1225,9 @@ static int igt_mmap_gpu(void *arg) return 0; } -static int check_present_pte(pte_t *pte, unsigned long addr, void *data) +static int check_present_pte(pte_t pte, unsigned long addr, void *data) { - if (!pte_present(*pte) || pte_none(*pte)) { + if (!pte_present(pte) || pte_none(pte)) { pr_err("missing PTE:%lx\n", (addr - (unsigned long)data) >> PAGE_SHIFT); return -EINVAL; @@ -1236,9 +1236,9 @@ static int check_present_pte(pte_t *pte, return 0; } -static int check_absent_pte(pte_t *pte, unsigned long addr, void *data) +static int check_absent_pte(pte_t pte, unsigned long addr, void *data) { - if (pte_present(*pte) && !pte_none(*pte)) { + if (pte_present(pte) && !pte_none(pte)) { pr_err("present PTE:%lx; expected to be revoked\n", (addr - (unsigned long)data) >> PAGE_SHIFT); return -EINVAL; @@ -1249,14 +1249,14 @@ static int check_absent_pte(pte_t *pte, static int check_present(unsigned long addr, unsigned long len) { - return apply_to_page_range(current->mm, addr, len, - check_present_pte, (void *)addr); + return verify_page_range(current->mm, addr, len, + check_present_pte, (void *)addr); } static int check_absent(unsigned long addr, unsigned long len) { - return apply_to_page_range(current->mm, addr, len, - check_absent_pte, (void *)addr); + return verify_page_range(current->mm, addr, len, + check_absent_pte, (void *)addr); } static int prefault_range(u64 start, u64 len) _______________________________________________ Intel-gfx mailing list Intel-gfx@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/intel-gfx
next prev parent reply other threads:[~2021-04-12 8:09 UTC|newest] Thread overview: 58+ messages / expand[flat|nested] mbox.gz Atom feed top 2021-04-12 8:00 [PATCH 0/7] mm: Unexport apply_to_page_range() Peter Zijlstra 2021-04-12 8:00 ` [Intel-gfx] " Peter Zijlstra 2021-04-12 8:00 ` [PATCH 1/7] mm: Unexport apply_to_existing_page_range() Peter Zijlstra 2021-04-12 8:00 ` [Intel-gfx] " Peter Zijlstra 2021-04-12 8:13 ` Christoph Hellwig 2021-04-12 8:13 ` [Intel-gfx] " Christoph Hellwig 2021-04-12 8:00 ` [PATCH 2/7] xen/gntdev,x86: Remove apply_to_page_range() use from module Peter Zijlstra 2021-04-12 8:00 ` [Intel-gfx] [PATCH 2/7] xen/gntdev, x86: " Peter Zijlstra 2021-04-12 8:26 ` [PATCH 2/7] xen/gntdev,x86: " Christoph Hellwig 2021-04-12 8:26 ` [Intel-gfx] [PATCH 2/7] xen/gntdev, x86: " Christoph Hellwig 2021-04-12 9:20 ` [PATCH 2/7] xen/gntdev,x86: " Peter Zijlstra 2021-04-12 9:20 ` [Intel-gfx] [PATCH 2/7] xen/gntdev, x86: " Peter Zijlstra 2021-04-12 9:26 ` [PATCH 2/7] xen/gntdev,x86: " Juergen Gross 2021-04-12 9:26 ` [Intel-gfx] [PATCH 2/7] xen/gntdev, x86: " Juergen Gross 2021-04-12 8:00 ` [PATCH 3/7] xen/gntdev: " Peter Zijlstra 2021-04-12 8:00 ` [Intel-gfx] " Peter Zijlstra 2021-04-12 8:27 ` Christoph Hellwig 2021-04-12 8:27 ` [Intel-gfx] " Christoph Hellwig 2021-04-12 9:02 ` Peter Zijlstra 2021-04-12 9:02 ` [Intel-gfx] " Peter Zijlstra 2021-04-12 8:00 ` [PATCH 4/7] mm: Introduce verify_page_range() Peter Zijlstra 2021-04-12 8:00 ` [Intel-gfx] " Peter Zijlstra 2021-04-12 8:28 ` Christoph Hellwig 2021-04-12 8:28 ` [Intel-gfx] " Christoph Hellwig 2021-04-12 9:17 ` Peter Zijlstra 2021-04-12 9:17 ` [Intel-gfx] " Peter Zijlstra 2021-04-12 20:05 ` Kees Cook 2021-04-12 20:05 ` [Intel-gfx] " Kees Cook 2021-04-13 6:54 ` Peter Zijlstra 2021-04-13 6:54 ` [Intel-gfx] " Peter Zijlstra 2021-04-19 23:36 ` Kees Cook 2021-04-19 23:36 ` [Intel-gfx] " Kees Cook 2021-04-13 7:36 ` Peter Zijlstra 2021-04-13 7:36 ` [Intel-gfx] " Peter Zijlstra 2021-04-14 3:01 ` Kees Cook 2021-04-14 3:01 ` [Intel-gfx] " Kees Cook 2021-04-14 7:00 ` Peter Zijlstra 2021-04-14 7:00 ` [Intel-gfx] " Peter Zijlstra 2021-04-12 8:00 ` [PATCH 5/7] xen/privcmd: Use verify_page_range() Peter Zijlstra 2021-04-12 8:00 ` [Intel-gfx] " Peter Zijlstra 2021-04-12 8:28 ` Christoph Hellwig 2021-04-12 8:28 ` [Intel-gfx] " Christoph Hellwig 2021-04-12 8:00 ` Peter Zijlstra [this message] 2021-04-12 8:00 ` [Intel-gfx] [PATCH 6/7] i915: Convert to verify_page_range() Peter Zijlstra 2021-04-12 8:28 ` Christoph Hellwig 2021-04-12 8:28 ` [Intel-gfx] " Christoph Hellwig 2021-04-12 20:08 ` Kees Cook 2021-04-12 20:08 ` [Intel-gfx] " Kees Cook 2021-04-13 6:54 ` Peter Zijlstra 2021-04-13 6:54 ` [Intel-gfx] " Peter Zijlstra 2021-04-14 3:04 ` Kees Cook 2021-04-14 3:04 ` [Intel-gfx] " Kees Cook 2021-04-12 8:00 ` [PATCH 7/7] mm: Unexport apply_to_page_range() Peter Zijlstra 2021-04-12 8:00 ` [Intel-gfx] " Peter Zijlstra 2021-04-12 8:28 ` Christoph Hellwig 2021-04-12 8:28 ` [Intel-gfx] " Christoph Hellwig 2021-04-12 9:00 ` [Intel-gfx] ✗ Fi.CI.BUILD: failure for " Patchwork 2021-04-12 9:23 ` Peter Zijlstra
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