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linux-user: Use cpu_untagged_addr in access_ok; split out *_untagged

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Provide both tagged and untagged versions of access_ok.
In a few places use thread_cpu, as the user is several
callees removed from do_syscall1.

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20210212184902.1251044-17-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Richard Henderson 2021-02-12 10:48:47 -08:00 • committed by Peter Maydell
parent 46b12f461c
commit c7169b022b
6 changed files with 24 additions and 13 deletions
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2
linux-user/elfload.c
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@ -3510,7 +3510,7 @@ static int vma_get_mapping_count(const struct mm_struct *mm)
static abi_ulong vma_dump_size(const struct vm_area_struct *vma)
{
/* if we cannot even read the first page, skip it */
if (!access_ok(VERIFY_READ, vma->vma_start, TARGET_PAGE_SIZE))
if (!access_ok_untagged(VERIFY_READ, vma->vma_start, TARGET_PAGE_SIZE))
return (0);
/*