[Qemu-commits] [qemu/qemu] 6e2950: linux-user/x86_64: Handle the vsyscall page in ope...

[Richard Henderson]

  Branch: refs/heads/staging-8.2
  Home:   https://github.com/qemu/qemu
  Commit: 6e29509abc79dcd0adb3c9ec848c2e95a158efc4
      
https://github.com/qemu/qemu/commit/6e29509abc79dcd0adb3c9ec848c2e95a158efc4
  Author: Richard Henderson <richard.henderson@linaro.org>
  Date:   2024-04-14 (Sun, 14 Apr 2024)

  Changed paths:
    M linux-user/syscall.c

  Log Message:
  -----------
  linux-user/x86_64: Handle the vsyscall page in open_self_maps_{2,4}

This is the only case in which we expect to have no host memory backing
for a guest memory page, because in general linux user processes cannot
map any pages in the top half of the 64-bit address space.

Resolves: https://gitlab.com/qemu-project/qemu/-/issues/2170
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
(cherry picked from commit 4ef1f559f270c66b3ffc23f6c845ff3d008c6356)
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>



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