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Re: [qemu-s390x] [Qemu-devel] [PATCH v2 5/7] mips/tcg: Call probe_write(
From: |
Aleksandar Markovic |
Subject: |
Re: [qemu-s390x] [Qemu-devel] [PATCH v2 5/7] mips/tcg: Call probe_write() for CONFIG_USER_ONLY as well |
Date: |
Thu, 29 Aug 2019 10:10:52 +0200 |
26.08.2019. 09.52, "David Hildenbrand" <address@hidden> је написао/ла:
>
> Let's call it also for CONFIG_USER_ONLY. While at it, add a FIXME and get
> rid of one local variable.
>
> MIPS code probably needs a bigger refactoring in regards of
> ensure_writable_pages(), similar to s390x, so for example, watchpoints
> can be handled reliably later. The actually accessed addresses should
> be probed only, not full pages.
>
> Signed-off-by: David Hildenbrand <address@hidden>
> ---
Reviewed-by: Aleksandar Markovic <address@hidden>
> target/mips/op_helper.c | 8 +++-----
> 1 file changed, 3 insertions(+), 5 deletions(-)
>
> diff --git a/target/mips/op_helper.c b/target/mips/op_helper.c
> index 34bcc8d884..08d9a4f9f1 100644
> --- a/target/mips/op_helper.c
> +++ b/target/mips/op_helper.c
> @@ -4537,16 +4537,14 @@ static inline void ensure_writable_pages(CPUMIPSState *env,
> int mmu_idx,
> uintptr_t retaddr)
> {
> -#if !defined(CONFIG_USER_ONLY)
> - target_ulong page_addr;
> + /* FIXME: Probe the actual accesses (pass and use a size) */
> if (unlikely(MSA_PAGESPAN(addr))) {
> /* first page */
> probe_write(env, addr, 0, mmu_idx, retaddr);
> /* second page */
> - page_addr = (addr & TARGET_PAGE_MASK) + TARGET_PAGE_SIZE;
> - probe_write(env, page_addr, 0, mmu_idx, retaddr);
> + addr = (addr & TARGET_PAGE_MASK) + TARGET_PAGE_SIZE;
> + probe_write(env, addr, 0, mmu_idx, retaddr);
> }
> -#endif
> }
>
> void helper_msa_st_b(CPUMIPSState *env, uint32_t wd,
> --
> 2.21.0
>
>
- [qemu-s390x] [PATCH v2 0/7] tcg: probe_write() refactorings, David Hildenbrand, 2019/08/26
- [qemu-s390x] [PATCH v2 1/7] s390x/tcg: Use guest_addr_valid() instead of h2g_valid() in probe_write_access(), David Hildenbrand, 2019/08/26
- [qemu-s390x] [PATCH v2 2/7] s390x/tcg: Fix length calculation in probe_write_access(), David Hildenbrand, 2019/08/26
- [qemu-s390x] [PATCH v2 3/7] tcg: Factor out CONFIG_USER_ONLY probe_write() from s390x code, David Hildenbrand, 2019/08/26
- [qemu-s390x] [PATCH v2 4/7] tcg: Enforce single page access in probe_write(), David Hildenbrand, 2019/08/26
- [qemu-s390x] [PATCH v2 5/7] mips/tcg: Call probe_write() for CONFIG_USER_ONLY as well, David Hildenbrand, 2019/08/26
- Re: [qemu-s390x] [Qemu-devel] [PATCH v2 5/7] mips/tcg: Call probe_write() for CONFIG_USER_ONLY as well,
Aleksandar Markovic <=
- [qemu-s390x] [PATCH v2 6/7] hppa/tcg: Call probe_write() also for CONFIG_USER_ONLY, David Hildenbrand, 2019/08/26
- [qemu-s390x] [PATCH v2 7/7] s390x/tcg: Pass a size to probe_write() in do_csst(), David Hildenbrand, 2019/08/26
- Re: [qemu-s390x] [PATCH v2 0/7] tcg: probe_write() refactorings, David Hildenbrand, 2019/08/27