Merge tag 'riscv-for-linus-6.1-mw2' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux

Pull more RISC-V updates from Palmer Dabbelt:

 - DT updates for the PolarFire SOC

 - a fix to correct the handling of write-only mappings

 - m{vetndor,arcd,imp}id is now in /proc/cpuinfo

 - the SiFive L2 cache controller support has been refactored to also
   support L3 caches

 - misc fixes, cleanups and improvements throughout the tree

* tag 'riscv-for-linus-6.1-mw2' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux: (42 commits)
  MAINTAINERS: add RISC-V's patchwork
  RISC-V: Make port I/O string accessors actually work
  riscv: enable software resend of irqs
  RISC-V: Re-enable counter access from userspace
  riscv: vdso: fix NULL deference in vdso_join_timens() when vfork
  riscv: Add cache information in AUX vector
  soc: sifive: ccache: define the macro for the register shifts
  soc: sifive: ccache: use pr_fmt() to remove CCACHE: prefixes
  soc: sifive: ccache: reduce printing on init
  soc: sifive: ccache: determine the cache level from dts
  soc: sifive: ccache: Rename SiFive L2 cache to Composable cache.
  dt-bindings: sifive-ccache: change Sifive L2 cache to Composable cache
  riscv: check for kernel config option in t-head memory types errata
  riscv: use BIT() marco for cpufeature probing
  riscv: use BIT() macros in t-head errata init
  riscv: drop some idefs from CMO initialization
  riscv: cleanup svpbmt cpufeature probing
  riscv: Pass -mno-relax only on lld < 15.0.0
  RISC-V: Avoid dereferening NULL regs in die()
  dt-bindings: riscv: add new riscv,isa strings for emulators
  ...

1 files changed, 10 insertions, 3 deletions

diff --git a/arch/riscv/kernel/vdso.c b/arch/riscv/kernel/vdso.c
index 692e7ae3dcb8..123d05255fcf 100644
--- a/arch/riscv/kernel/vdso.c
+++ b/arch/riscv/kernel/vdso.c
@@ -60,6 +60,11 @@ struct __vdso_info {
 	struct vm_special_mapping *cm;
 };
 
+static struct __vdso_info vdso_info;
+#ifdef CONFIG_COMPAT
+static struct __vdso_info compat_vdso_info;
+#endif
+
 static int vdso_mremap(const struct vm_special_mapping *sm,
 		       struct vm_area_struct *new_vma)
 {
@@ -115,15 +120,18 @@ int vdso_join_timens(struct task_struct *task, struct time_namespace *ns)
 	struct mm_struct *mm = task->mm;
 	struct vm_area_struct *vma;
 	VMA_ITERATOR(vmi, mm, 0);
-	struct __vdso_info *vdso_info = mm->context.vdso_info;
 
 	mmap_read_lock(mm);
 
 	for_each_vma(vmi, vma) {
 		unsigned long size = vma->vm_end - vma->vm_start;
 
-		if (vma_is_special_mapping(vma, vdso_info->dm))
+		if (vma_is_special_mapping(vma, vdso_info.dm))
 			zap_page_range(vma, vma->vm_start, size);
+#ifdef CONFIG_COMPAT
+		if (vma_is_special_mapping(vma, compat_vdso_info.dm))
+			zap_page_range(vma, vma->vm_start, size);
+#endif
 	}
 
 	mmap_read_unlock(mm);
@@ -265,7 +273,6 @@ static int __setup_additional_pages(struct mm_struct *mm,
 
 	vdso_base += VVAR_SIZE;
 	mm->context.vdso = (void *)vdso_base;
-	mm->context.vdso_info = (void *)vdso_info;
 
 	ret =
 	   _install_special_mapping(mm, vdso_base, vdso_text_len,