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authorLinus Torvalds <torvalds@linux-foundation.org>2024-11-23 10:44:31 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2024-11-23 10:44:31 -0800
commit42d9e8b7ccddee75989283cf7477305cfe3776ff (patch)
treeb7f8cf87bcc6755cc829d0ca90e8ec90bb58ab16 /arch/powerpc/kernel/vdso.c
parent5c00ff742bf5caf85f60e1c73999f99376fb865d (diff)
parent3c592ce7991cdf03bc7d139d790ce58c82c5903b (diff)
Merge tag 'powerpc-6.13-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux
Pull powerpc updates from Michael Ellerman: - Rework kfence support for the HPT MMU to work on systems with >= 16TB of RAM. - Remove the powerpc "maple" platform, used by the "Yellow Dog Powerstation". - Add support for DYNAMIC_FTRACE_WITH_CALL_OPS, DYNAMIC_FTRACE_WITH_DIRECT_CALLS & BPF Trampolines. - Add support for running KVM nested guests on Power11. - Other small features, cleanups and fixes. Thanks to Amit Machhiwal, Arnd Bergmann, Christophe Leroy, Costa Shulyupin, David Hunter, David Wang, Disha Goel, Gautam Menghani, Geert Uytterhoeven, Hari Bathini, Julia Lawall, Kajol Jain, Keith Packard, Lukas Bulwahn, Madhavan Srinivasan, Markus Elfring, Michal Suchanek, Ming Lei, Mukesh Kumar Chaurasiya, Nathan Chancellor, Naveen N Rao, Nicholas Piggin, Nysal Jan K.A, Paulo Miguel Almeida, Pavithra Prakash, Ritesh Harjani (IBM), Rob Herring (Arm), Sachin P Bappalige, Shen Lichuan, Simon Horman, Sourabh Jain, Thomas Weißschuh, Thorsten Blum, Thorsten Leemhuis, Venkat Rao Bagalkote, Zhang Zekun, and zhang jiao. * tag 'powerpc-6.13-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: (89 commits) EDAC/powerpc: Remove PPC_MAPLE drivers powerpc/perf: Add per-task/process monitoring to vpa_pmu driver powerpc/kvm: Add vpa latency counters to kvm_vcpu_arch docs: ABI: sysfs-bus-event_source-devices-vpa-pmu: Document sysfs event format entries for vpa_pmu powerpc/perf: Add perf interface to expose vpa counters MAINTAINERS: powerpc: Mark Maddy as "M" powerpc/Makefile: Allow overriding CPP powerpc-km82xx.c: replace of_node_put() with __free ps3: Correct some typos in comments powerpc/kexec: Fix return of uninitialized variable macintosh: Use common error handling code in via_pmu_led_init() powerpc/powermac: Use of_property_match_string() in pmac_has_backlight_type() powerpc: remove dead config options for MPC85xx platform support powerpc/xive: Use cpumask_intersects() selftests/powerpc: Remove the path after initialization. powerpc/xmon: symbol lookup length fixed powerpc/ep8248e: Use %pa to format resource_size_t powerpc/ps3: Reorganize kerneldoc parameter names KVM: PPC: Book3S HV: Fix kmv -> kvm typo powerpc/sstep: make emulate_vsx_load and emulate_vsx_store static ...
Diffstat (limited to 'arch/powerpc/kernel/vdso.c')
-rw-r--r--arch/powerpc/kernel/vdso.c16
1 files changed, 10 insertions, 6 deletions
diff --git a/arch/powerpc/kernel/vdso.c b/arch/powerpc/kernel/vdso.c
index 924f7f4fa597..43379365ce1b 100644
--- a/arch/powerpc/kernel/vdso.c
+++ b/arch/powerpc/kernel/vdso.c
@@ -47,12 +47,13 @@ long sys_ni_syscall(void);
*/
static union {
struct vdso_arch_data data;
- u8 page[PAGE_SIZE];
+ u8 page[2 * PAGE_SIZE];
} vdso_data_store __page_aligned_data;
struct vdso_arch_data *vdso_data = &vdso_data_store.data;
enum vvar_pages {
- VVAR_DATA_PAGE_OFFSET,
+ VVAR_BASE_PAGE_OFFSET,
+ VVAR_TIME_PAGE_OFFSET,
VVAR_TIMENS_PAGE_OFFSET,
VVAR_NR_PAGES,
};
@@ -118,7 +119,7 @@ static struct vm_special_mapping vdso64_spec __ro_after_init = {
#ifdef CONFIG_TIME_NS
struct vdso_data *arch_get_vdso_data(void *vvar_page)
{
- return ((struct vdso_arch_data *)vvar_page)->data;
+ return vvar_page;
}
/*
@@ -152,11 +153,14 @@ static vm_fault_t vvar_fault(const struct vm_special_mapping *sm,
unsigned long pfn;
switch (vmf->pgoff) {
- case VVAR_DATA_PAGE_OFFSET:
+ case VVAR_BASE_PAGE_OFFSET:
+ pfn = virt_to_pfn(vdso_data);
+ break;
+ case VVAR_TIME_PAGE_OFFSET:
if (timens_page)
pfn = page_to_pfn(timens_page);
else
- pfn = virt_to_pfn(vdso_data);
+ pfn = virt_to_pfn(vdso_data->data);
break;
#ifdef CONFIG_TIME_NS
case VVAR_TIMENS_PAGE_OFFSET:
@@ -169,7 +173,7 @@ static vm_fault_t vvar_fault(const struct vm_special_mapping *sm,
*/
if (!timens_page)
return VM_FAULT_SIGBUS;
- pfn = virt_to_pfn(vdso_data);
+ pfn = virt_to_pfn(vdso_data->data);
break;
#endif /* CONFIG_TIME_NS */
default: