* [PATCH] KVM: arm/arm64: Comments cleanup in mmu.c
@ 2019-03-25 8:02 Zenghui Yu
2019-03-25 9:58 ` Suzuki K Poulose
0 siblings, 1 reply; 2+ messages in thread
From: Zenghui Yu @ 2019-03-25 8:02 UTC (permalink / raw)
To: christoffer.dall, marc.zyngier
Cc: james.morse, julien.thierry, suzuki.poulose, wanghaibin.wang,
kvmarm, linux-arm-kernel, linux-kernel, Zenghui Yu
Some comments in virt/kvm/arm/mmu.c are outdated and incorrect.
Get rid of these comments, to keep the code&comment correct and
current as a whole.
Only a cleanup here, no functional change.
Signed-off-by: Zenghui Yu <yuzenghui@huawei.com>
---
virt/kvm/arm/mmu.c | 23 +++++++++--------------
1 file changed, 9 insertions(+), 14 deletions(-)
diff --git a/virt/kvm/arm/mmu.c b/virt/kvm/arm/mmu.c
index ffd7acd..0a6efe7 100644
--- a/virt/kvm/arm/mmu.c
+++ b/virt/kvm/arm/mmu.c
@@ -102,8 +102,7 @@ static bool kvm_is_device_pfn(unsigned long pfn)
* @addr: IPA
* @pmd: pmd pointer for IPA
*
- * Function clears a PMD entry, flushes addr 1st and 2nd stage TLBs. Marks all
- * pages in the range dirty.
+ * Function clears a PMD entry, flushes addr 1st and 2nd stage TLBs.
*/
static void stage2_dissolve_pmd(struct kvm *kvm, phys_addr_t addr, pmd_t *pmd)
{
@@ -121,8 +120,7 @@ static void stage2_dissolve_pmd(struct kvm *kvm, phys_addr_t addr, pmd_t *pmd)
* @addr: IPA
* @pud: pud pointer for IPA
*
- * Function clears a PUD entry, flushes addr 1st and 2nd stage TLBs. Marks all
- * pages in the range dirty.
+ * Function clears a PUD entry, flushes addr 1st and 2nd stage TLBs.
*/
static void stage2_dissolve_pud(struct kvm *kvm, phys_addr_t addr, pud_t *pudp)
{
@@ -899,9 +897,8 @@ int create_hyp_exec_mappings(phys_addr_t phys_addr, size_t size,
* kvm_alloc_stage2_pgd - allocate level-1 table for stage-2 translation.
* @kvm: The KVM struct pointer for the VM.
*
- * Allocates only the stage-2 HW PGD level table(s) (can support either full
- * 40-bit input addresses or limited to 32-bit input addresses). Clears the
- * allocated pages.
+ * Allocates only the stage-2 HW PGD level table(s) of size defined by
+ * stage2_pgd_size(kvm).
*
* Note we don't need locking here as this is only called when the VM is
* created, which can only be done once.
@@ -1451,13 +1448,11 @@ static void stage2_wp_pmds(struct kvm *kvm, pud_t *pud,
}
/**
- * stage2_wp_puds - write protect PGD range
- * @pgd: pointer to pgd entry
- * @addr: range start address
- * @end: range end address
- *
- * Process PUD entries, for a huge PUD we cause a panic.
- */
+ * stage2_wp_puds - write protect PGD range
+ * @pgd: pointer to pgd entry
+ * @addr: range start address
+ * @end: range end address
+ */
static void stage2_wp_puds(struct kvm *kvm, pgd_t *pgd,
phys_addr_t addr, phys_addr_t end)
{
--
1.8.3.1
^ permalink raw reply related [flat|nested] 2+ messages in thread
* Re: [PATCH] KVM: arm/arm64: Comments cleanup in mmu.c
2019-03-25 8:02 [PATCH] KVM: arm/arm64: Comments cleanup in mmu.c Zenghui Yu
@ 2019-03-25 9:58 ` Suzuki K Poulose
0 siblings, 0 replies; 2+ messages in thread
From: Suzuki K Poulose @ 2019-03-25 9:58 UTC (permalink / raw)
To: yuzenghui, christoffer.dall, marc.zyngier
Cc: james.morse, julien.thierry, wanghaibin.wang, kvmarm,
linux-arm-kernel, linux-kernel
On 25/03/2019 08:02, Zenghui Yu wrote:
> Some comments in virt/kvm/arm/mmu.c are outdated and incorrect.
> Get rid of these comments, to keep the code&comment correct and
> current as a whole.
>
> Only a cleanup here, no functional change.
>
> Signed-off-by: Zenghui Yu <yuzenghui@huawei.com>
> ---
> virt/kvm/arm/mmu.c | 23 +++++++++--------------
> 1 file changed, 9 insertions(+), 14 deletions(-)
>
> diff --git a/virt/kvm/arm/mmu.c b/virt/kvm/arm/mmu.c
> index ffd7acd..0a6efe7 100644
> --- a/virt/kvm/arm/mmu.c
> +++ b/virt/kvm/arm/mmu.c
> @@ -102,8 +102,7 @@ static bool kvm_is_device_pfn(unsigned long pfn)
> * @addr: IPA
> * @pmd: pmd pointer for IPA
> *
> - * Function clears a PMD entry, flushes addr 1st and 2nd stage TLBs. Marks all
> - * pages in the range dirty.
> + * Function clears a PMD entry, flushes addr 1st and 2nd stage TLBs.
> */
> static void stage2_dissolve_pmd(struct kvm *kvm, phys_addr_t addr, pmd_t *pmd)
> {
> @@ -121,8 +120,7 @@ static void stage2_dissolve_pmd(struct kvm *kvm, phys_addr_t addr, pmd_t *pmd)
> * @addr: IPA
> * @pud: pud pointer for IPA
> *
> - * Function clears a PUD entry, flushes addr 1st and 2nd stage TLBs. Marks all
> - * pages in the range dirty.
> + * Function clears a PUD entry, flushes addr 1st and 2nd stage TLBs.
> */
> static void stage2_dissolve_pud(struct kvm *kvm, phys_addr_t addr, pud_t *pudp)
> {
> @@ -899,9 +897,8 @@ int create_hyp_exec_mappings(phys_addr_t phys_addr, size_t size,
> * kvm_alloc_stage2_pgd - allocate level-1 table for stage-2 translation.
> * @kvm: The KVM struct pointer for the VM.
> *
> - * Allocates only the stage-2 HW PGD level table(s) (can support either full
> - * 40-bit input addresses or limited to 32-bit input addresses). Clears the
> - * allocated pages.
> + * Allocates only the stage-2 HW PGD level table(s) of size defined by
> + * stage2_pgd_size(kvm).
> *
> * Note we don't need locking here as this is only called when the VM is
> * created, which can only be done once.
> @@ -1451,13 +1448,11 @@ static void stage2_wp_pmds(struct kvm *kvm, pud_t *pud,
> }
>
> /**
> - * stage2_wp_puds - write protect PGD range
> - * @pgd: pointer to pgd entry
> - * @addr: range start address
> - * @end: range end address
> - *
> - * Process PUD entries, for a huge PUD we cause a panic.
> - */
> + * stage2_wp_puds - write protect PGD range
> + * @pgd: pointer to pgd entry
> + * @addr: range start address
> + * @end: range end address
> + */
Reviewed-by: Suzuki K Poulose <suzuki.poulose@arm.com>
^ permalink raw reply [flat|nested] 2+ messages in thread
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